migrate to null safety

.fvm/flutter_sdk

+/Users/daivph/fvm/versions/3.0.5

.fvm/fvm_config.json

+{
+  "flutterSdkVersion": "3.0.5",
+  "flavors": {}
+}

.vscode/settings.json

+{
+    "dart.flutterSdkPath": "/Users/daivph/fvm/versions/3.0.5"
+}

android/app/build.gradle

 }
 
 android {
-    compileSdkVersion 29
+    compileSdkVersion 33
 
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "vn.azteam.tpfarm"
         minSdkVersion 21
-        targetSdkVersion 29
+        targetSdkVersion 33
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
     }

lib/app.dart

 
 class App extends StatelessWidget {
   const App({
-    Key key,
-    @required this.authenticationRepository,
+    Key? key,
+    required this.authenticationRepository,
   })  : assert(authenticationRepository != null),
         super(key: key);
 
       value: authenticationRepository,
       child: BlocProvider(
         create: (_) => AuthenticationBloc(
-          authenticationRepository: authenticationRepository,
+          repository: authenticationRepository,
         ),
         child: AppView(),
       ),
 class _AppViewState extends State<AppView> {
   final _navigatorKey = GlobalKey<NavigatorState>();
 
-  NavigatorState get _navigator => _navigatorKey.currentState;
+  NavigatorState get _navigator => _navigatorKey.currentState!;
 
   @override
   Widget build(BuildContext context) {

lib/authentication/bloc/authentication_bloc.dart

 part 'authentication_event.dart';
 part 'authentication_state.dart';
 
-class AuthenticationBloc
-    extends Bloc<AuthenticationEvent, AuthenticationState> {
-  AuthenticationBloc(
-      {@required AuthenticationRepository authenticationRepository})
-      : assert(authenticationRepository != null),
-        _authenticationRepository = authenticationRepository,
-        super(const AuthenticationState.unknown()) {
-    _authenticationStatusSubscription = _authenticationRepository.status.listen(
-      (status) => add(AuthenticationStatusChanged(status)),
-    );
-  }
+class AuthenticationBloc extends Bloc<AuthenticationEvent, AuthenticationState> {
+  AuthenticationBloc({required AuthenticationRepository repository})
+      : _authenticationRepository = repository,
+        super(const AuthenticationState.unknown()) {}
 
   final AuthenticationRepository _authenticationRepository;
-  StreamSubscription<AuthenticationStatus> _authenticationStatusSubscription;
+  StreamSubscription<AuthenticationStatus>? _authenticationStatusSubscription;
 
   @override
   Stream<AuthenticationState> mapEventToState(
       case AuthenticationStatus.unauthenticated:
         return const AuthenticationState.unauthenticated();
       case AuthenticationStatus.authenticated:
-        return AuthenticationState.authenticated();
+        return const AuthenticationState.authenticated();
       default:
         return const AuthenticationState.unknown();
     }

lib/custom_model/ActionEnd.dart

 class ActionEnd {
-  int id;
-  int activityId;
-  String executeDate;
-  String description;
+  int? id;
+  int? activityId;
+  String? executeDate;
+  String? description;
 
   ActionEnd({this.id, this.activityId, this.executeDate, this.description});
 

lib/custom_model/CropPlot.dart

 class CropPlot {
-  TbCropDTO tbCropDTO;
-  List<Activities> activities;
-  String sowingDate;
-  int soakSeedsTime;
-  int seedIncubationTime;
-  int numberPlants;
-  int numberCurrentPlants;
-  String endOfFarmingDate;
+  TbCropDTO? tbCropDTO;
+  List<Activities>? activities;
+  String? sowingDate;
+  int? soakSeedsTime;
+  int? seedIncubationTime;
+  int? numberPlants;
+  int? numberCurrentPlants;
+  String? endOfFarmingDate;
 
   CropPlot(
       {this.tbCropDTO,
       this.endOfFarmingDate});
 
   CropPlot.fromJson(Map<String, dynamic> json) {
-    tbCropDTO = json['tbCropDTO'] != null
-        ? new TbCropDTO.fromJson(json['tbCropDTO'])
-        : null;
+    tbCropDTO = json['tbCropDTO'] != null ? TbCropDTO.fromJson(json['tbCropDTO']) : null;
     if (json['activities'] != null) {
-      activities = new List<Activities>();
+      activities = <Activities>[];
       json['activities'].forEach((v) {
-        activities.add(new Activities.fromJson(v));
+        activities?.add(Activities.fromJson(v));
       });
     }
     sowingDate = json['sowingDate'];
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    if (this.tbCropDTO != null) {
-      data['tbCropDTO'] = this.tbCropDTO.toJson();
+    final data = <String, dynamic>{};
+    if (tbCropDTO != null) {
+      data['tbCropDTO'] = tbCropDTO?.toJson();
     }
-    if (this.activities != null) {
-      data['activities'] = this.activities.map((v) => v.toJson()).toList();
+    if (activities != null) {
+      data['activities'] = activities?.map((v) => v.toJson()).toList();
     }
-    data['sowingDate'] = this.sowingDate;
-    data['soakSeedsTime'] = this.soakSeedsTime;
-    data['seedIncubationTime'] = this.seedIncubationTime;
-    data['numberPlants'] = this.numberPlants;
-    data['numberCurrentPlants'] = this.numberCurrentPlants;
-    data['endOfFarmingDate'] = this.endOfFarmingDate;
+    data['sowingDate'] = sowingDate;
+    data['soakSeedsTime'] = soakSeedsTime;
+    data['seedIncubationTime'] = seedIncubationTime;
+    data['numberPlants'] = numberPlants;
+    data['numberCurrentPlants'] = numberCurrentPlants;
+    data['endOfFarmingDate'] = endOfFarmingDate;
     return data;
   }
 }
 
 class TbCropDTO {
-  int id;
-  String qrCode;
-  String code;
-  num areaM2;
-  int type;
-  String startDate;
-  String endDate;
-  String status;
-  String description;
-  int ageDayStartAt;
-  int tbSuppliesId;
-  String suppliesName;
-  int tbGuidelineId;
-  int netHouseId;
-  String netHouseName;
-  int areaId;
-  String area;
-  List<TbDetailUsers> tbDetailUsers;
+  int? id;
+  String? qrCode;
+  String? code;
+  num? areaM2;
+  int? type;
+  String? startDate;
+  String? endDate;
+  String? status;
+  String? description;
+  int? ageDayStartAt;
+  int? tbSuppliesId;
+  String? suppliesName;
+  int? tbGuidelineId;
+  int? netHouseId;
+  String? netHouseName;
+  int? areaId;
+  String? area;
+  List<TbDetailUsers>? tbDetailUsers;
 
   TbCropDTO(
       {this.id,
     areaId = json['areaId'];
     area = json['area'];
     if (json['tbDetailUsers'] != null) {
-      tbDetailUsers = new List<TbDetailUsers>();
+      tbDetailUsers = <TbDetailUsers>[];
       json['tbDetailUsers'].forEach((v) {
-        tbDetailUsers.add(new TbDetailUsers.fromJson(v));
+        tbDetailUsers?.add(TbDetailUsers.fromJson(v));
       });
     }
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['qrCode'] = this.qrCode;
-    data['code'] = this.code;
-    data['areaM2'] = this.areaM2;
-    data['type'] = this.type;
-    data['startDate'] = this.startDate;
-    data['endDate'] = this.endDate;
-    data['status'] = this.status;
-    data['description'] = this.description;
-    data['ageDayStartAt'] = this.ageDayStartAt;
-    data['tbSuppliesId'] = this.tbSuppliesId;
-    data['suppliesName'] = this.suppliesName;
-    data['tbGuidelineId'] = this.tbGuidelineId;
-    data['netHouseId'] = this.netHouseId;
-    data['netHouseName'] = this.netHouseName;
-    data['areaId'] = this.areaId;
-    data['area'] = this.area;
-    if (this.tbDetailUsers != null) {
-      data['tbDetailUsers'] =
-          this.tbDetailUsers.map((v) => v.toJson()).toList();
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['qrCode'] = qrCode;
+    data['code'] = code;
+    data['areaM2'] = areaM2;
+    data['type'] = type;
+    data['startDate'] = startDate;
+    data['endDate'] = endDate;
+    data['status'] = status;
+    data['description'] = description;
+    data['ageDayStartAt'] = ageDayStartAt;
+    data['tbSuppliesId'] = tbSuppliesId;
+    data['suppliesName'] = suppliesName;
+    data['tbGuidelineId'] = tbGuidelineId;
+    data['netHouseId'] = netHouseId;
+    data['netHouseName'] = netHouseName;
+    data['areaId'] = areaId;
+    data['area'] = area;
+    if (tbDetailUsers != null) {
+      data['tbDetailUsers'] = tbDetailUsers?.map((v) => v.toJson()).toList();
     }
     return data;
   }
 }
 
 class TbDetailUsers {
-  int id;
-  String fullName;
-  String phone;
+  int? id;
+  String? fullName;
+  String? phone;
 
   TbDetailUsers({this.id, this.fullName, this.phone});
 
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['fullName'] = this.fullName;
-    data['phone'] = this.phone;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['fullName'] = fullName;
+    data['phone'] = phone;
     return data;
   }
 }
 
 class Activities {
-  int id;
-  int ageDay;
-  int cropId;
-  String executeDate;
-  String description;
-  int activityTypeId;
-  String activityTypeName;
-  String activityTypeDescription;
+  int? id;
+  int? ageDay;
+  int? cropId;
+  String? executeDate;
+  String? description;
+  int? activityTypeId;
+  String? activityTypeName;
+  String? activityTypeDescription;
 
   Activities(
       {this.id,
       this.activityTypeDescription});
 
   Activities.clone(Activities activities) {
-    this.id = activities.id;
-    this.cropId = activities.cropId;
-    this.activityTypeName = activities.activityTypeName;
-    this.activityTypeDescription = activities.activityTypeDescription;
-    this.executeDate = activities.executeDate;
+    id = activities.id;
+    cropId = activities.cropId;
+    activityTypeName = activities.activityTypeName;
+    activityTypeDescription = activities.activityTypeDescription;
+    executeDate = activities.executeDate;
   }
 
   Activities.fromJson(Map<String, dynamic> json) {
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['ageDay'] = this.ageDay;
-    data['cropId'] = this.cropId;
-    data['executeDate'] = this.executeDate;
-    data['description'] = this.description;
-    data['activityTypeId'] = this.activityTypeId;
-    data['activityTypeName'] = this.activityTypeName;
-    data['activityTypeDescription'] = this.activityTypeDescription;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['ageDay'] = ageDay;
+    data['cropId'] = cropId;
+    data['executeDate'] = executeDate;
+    data['description'] = description;
+    data['activityTypeId'] = activityTypeId;
+    data['activityTypeName'] = activityTypeName;
+    data['activityTypeDescription'] = activityTypeDescription;
     return data;
   }
 }

lib/custom_model/CropStatus.dart

 class CropStatus {
-  int id;
-  int cropId;
-  int activityId;
-  String executeDate;
-  String cropRate;
-  String numberOfTreeToGrow;
-  String heightOfTree;
-  String numberOfLeaf;
-  String leafSize;
-  String leafColor;
-  String abilityProduceBuds;
-  String internodeLength;
-  String description;
-  String executeBy;
-  String media;
-  List<String> mediaDel;
+  int? id;
+  int? cropId;
+  int? activityId;
+  String? executeDate;
+  String? cropRate;
+  String? numberOfTreeToGrow;
+  String? heightOfTree;
+  String? numberOfLeaf;
+  String? leafSize;
+  String? leafColor;
+  String? abilityProduceBuds;
+  String? internodeLength;
+  String? description;
+  String? executeBy;
+  String? media;
+  List<String>? mediaDel;
 
   CropStatus(
       {this.id,
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['cropId'] = this.cropId;
-    data['activityId'] = this.activityId;
-    data['executeDate'] = this.executeDate;
-    data['cropRate'] = this.cropRate;
-    data['numberOfTreeToGrow'] = this.numberOfTreeToGrow;
-    data['heightOfTree'] = this.heightOfTree;
-    data['numberOfLeaf'] = this.numberOfLeaf;
-    data['leafSize'] = this.leafSize;
-    data['leafColor'] = this.leafColor;
-    data['abilityProduceBuds'] = this.abilityProduceBuds;
-    data['internodeLength'] = this.internodeLength;
-    data['description'] = this.description;
-    data['executeBy'] = this.executeBy;
-    data['media'] = this.media;
-    data['media_del'] = this.mediaDel;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['cropId'] = cropId;
+    data['activityId'] = activityId;
+    data['executeDate'] = executeDate;
+    data['cropRate'] = cropRate;
+    data['numberOfTreeToGrow'] = numberOfTreeToGrow;
+    data['heightOfTree'] = heightOfTree;
+    data['numberOfLeaf'] = numberOfLeaf;
+    data['leafSize'] = leafSize;
+    data['leafColor'] = leafColor;
+    data['abilityProduceBuds'] = abilityProduceBuds;
+    data['internodeLength'] = internodeLength;
+    data['description'] = description;
+    data['executeBy'] = executeBy;
+    data['media'] = media;
+    data['media_del'] = mediaDel;
     return data;
   }
 }

lib/custom_model/Device.dart

 class Device {
-  int id;
-  String name;
-  String status;
-  String location;
-  num mode;
-  bool isSelected;
+  int? id;
+  String? name;
+  String? status;
+  String? location;
+  num? mode;
+  bool? isSelected;
 
   Device({this.id, this.name, this.status, this.location, this.mode});
 
   Device.clone(Device device) {
-    this.id = device.id;
-    this.name = device.name;
-    this.status = device.status;
-    this.location = device.location;
-    this.mode = device.mode;
+    id = device.id;
+    name = device.name;
+    status = device.status;
+    location = device.location;
+    mode = device.mode;
   }
 
   Device.fromJson(Map<String, dynamic> json) {
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['name'] = this.name;
-    data['status'] = this.status;
-    data['location'] = this.location;
-    data['mode'] = this.mode;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['name'] = name;
+    data['status'] = status;
+    data['location'] = location;
+    data['mode'] = mode;
     return data;
   }
 }

lib/custom_model/Disease.dart

 class Disease {
-  int id;
-  int activityId;
-  int cropId;
-  String executeDate;
-  String media;
-  String typesOfPest;
-  String harmLevel;
-  String treePercent;
-  String location;
-  String naturalEnemy;
-  String treatmentMeasures;
-  String description;
-  String executeBy;
+  int? id;
+  int? activityId;
+  int? cropId;
+  String? executeDate;
+  String? media;
+  String? typesOfPest;
+  String? harmLevel;
+  String? treePercent;
+  String? location;
+  String? naturalEnemy;
+  String? treatmentMeasures;
+  String? description;
+  String? executeBy;
 
   Disease(
       {this.id,
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['activityId'] = this.activityId;
-    data['cropId'] = this.cropId;
-    data['executeDate'] = this.executeDate;
-    data['media'] = this.media;
-    data['typesOfPest'] = this.typesOfPest;
-    data['harmLevel'] = this.harmLevel;
-    data['treePercent'] = this.treePercent;
-    data['location'] = this.location;
-    data['naturalEnemy'] = this.naturalEnemy;
-    data['treatmentMeasures'] = this.treatmentMeasures;
-    data['description'] = this.description;
-    data['executeBy'] = this.executeBy;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['activityId'] = activityId;
+    data['cropId'] = cropId;
+    data['executeDate'] = executeDate;
+    data['media'] = media;
+    data['typesOfPest'] = typesOfPest;
+    data['harmLevel'] = harmLevel;
+    data['treePercent'] = treePercent;
+    data['location'] = location;
+    data['naturalEnemy'] = naturalEnemy;
+    data['treatmentMeasures'] = treatmentMeasures;
+    data['description'] = description;
+    data['executeBy'] = executeBy;
     return data;
   }
 }

lib/custom_model/Dung.dart

 import 'SuppliesUsing.dart';
 
 class Dung {
-  int id;
-  int activityId;
-  int cropId;
-  String executeDate;
-  String description;
-  String media;
-  num quarantinePeriod;
-  String weatherConditions;
-  String purpose;
-  String executeBy;
-  List<String> mediaDel;
-  List<SuppliesUsing> suppliesUsing;
+  int? id;
+  int? activityId;
+  int? cropId;
+  String? executeDate;
+  String? description;
+  String? media;
+  num? quarantinePeriod;
+  String? weatherConditions;
+  String? purpose;
+  String? executeBy;
+  List<String>? mediaDel;
+  List<SuppliesUsing>? suppliesUsing;
 
   Dung(
       {this.id,
     purpose = json['purpose'];
     executeBy = json['executeBy'];
     if (json['suppliesUsing'] != null) {
-      suppliesUsing = new List<SuppliesUsing>();
+      suppliesUsing = <SuppliesUsing>[];
       json['suppliesUsing'].forEach((v) {
-        suppliesUsing.add(new SuppliesUsing.fromJson(v));
+        suppliesUsing?.add(SuppliesUsing.fromJson(v));
       });
     }
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['cropId'] = this.cropId;
-    data['activityId'] = this.activityId;
-    data['executeDate'] = this.executeDate;
-    data['description'] = this.description;
-    data['media'] = this.media;
-    data['quarantinePeriod'] = this.quarantinePeriod;
-    data['weatherConditions'] = this.weatherConditions;
-    data['purpose'] = this.purpose;
-    data['executeBy'] = this.executeBy;
-    data['media_del'] = this.mediaDel;
-    if (this.suppliesUsing != null) {
-      data['suppliesUsing'] =
-          this.suppliesUsing.map((v) => v.toJson()).toList();
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['cropId'] = cropId;
+    data['activityId'] = activityId;
+    data['executeDate'] = executeDate;
+    data['description'] = description;
+    data['media'] = media;
+    data['quarantinePeriod'] = quarantinePeriod;
+    data['weatherConditions'] = weatherConditions;
+    data['purpose'] = purpose;
+    data['executeBy'] = executeBy;
+    data['media_del'] = mediaDel;
+    if (suppliesUsing != null) {
+      data['suppliesUsing'] = suppliesUsing?.map((v) => v.toJson()).toList();
     }
     return data;
   }

lib/custom_model/End.dart

 class End {
-  int id;
-  int cropId;
-  int activityId;
-  String executeDate;
-  String description;
-  String createdByName;
-  List<String> mediaDel;
-  String media;
+  int? id;
+  int? cropId;
+  int? activityId;
+  String? executeDate;
+  String? description;
+  String? createdByName;
+  List<String>? mediaDel;
+  String? media;
 
-  End(
-      {this.id,
-      this.cropId,
-      this.activityId,
-      this.executeDate,
-      this.description,
-      this.createdByName,
-      this.mediaDel,
-      this.media});
+  End({this.id, this.cropId, this.activityId, this.executeDate, this.description, this.createdByName, this.mediaDel, this.media});
 
   End.fromJson(Map<String, dynamic> json) {
     id = json['id'];
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['cropId'] = this.cropId;
-    data['activityId'] = this.activityId;
-    data['executeDate'] = this.executeDate;
-    data['description'] = this.description;
-    data['createdByName'] = this.createdByName;
-    data['media'] = this.media;
-    data['media_del'] = this.mediaDel;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['cropId'] = cropId;
+    data['activityId'] = activityId;
+    data['executeDate'] = executeDate;
+    data['description'] = description;
+    data['createdByName'] = createdByName;
+    data['media'] = media;
+    data['media_del'] = mediaDel;
     return data;
   }
 }

lib/custom_model/Environment.dart

 class Environment {
-  int id;
-  int activityId;
-  int cropId;
-  String executeDate;
-  String media;
-  String description;
-  String executeBy;
-  String pH;
-  String ec;
-  String ocdd;
-  String temperature;
-  String dodo;
-  String lln;
-  List<EnvironmentUpdates> environmentUpdates;
+  int? id;
+  int? activityId;
+  int? cropId;
+  String? executeDate;
+  String? media;
+  String? description;
+  String? executeBy;
+  String? pH;
+  String? ec;
+  String? ocdd;
+  String? temperature;
+  String? dodo;
+  String? lln;
+  List<EnvironmentUpdates>? environmentUpdates;
 
   Environment(
       {this.id,
     dodo = json['dodo'];
     lln = json['lln'];
     if (json['environmentUpdates'] != null) {
-      environmentUpdates = new List<EnvironmentUpdates>();
+      environmentUpdates = <EnvironmentUpdates>[];
       json['environmentUpdates'].forEach((v) {
-        environmentUpdates.add(new EnvironmentUpdates.fromJson(v));
+        environmentUpdates?.add(EnvironmentUpdates.fromJson(v));
       });
     }
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['activityId'] = this.activityId;
-    data['cropId'] = this.cropId;
-    data['executeDate'] = this.executeDate;
-    data['media'] = this.media;
-    data['description'] = this.description;
-    data['executeBy'] = this.executeBy;
-    data['pH'] = this.pH;
-    data['ec'] = this.ec;
-    data['ocdd'] = this.ocdd;
-    data['temperature'] = this.temperature;
-    data['dodo'] = this.dodo;
-    data['lln'] = this.lln;
-    if (this.environmentUpdates != null) {
-      data['environmentUpdates'] =
-          this.environmentUpdates.map((v) => v.toJson()).toList();
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['activityId'] = activityId;
+    data['cropId'] = cropId;
+    data['executeDate'] = executeDate;
+    data['media'] = media;
+    data['description'] = description;
+    data['executeBy'] = executeBy;
+    data['pH'] = pH;
+    data['ec'] = ec;
+    data['ocdd'] = ocdd;
+    data['temperature'] = temperature;
+    data['dodo'] = dodo;
+    data['lln'] = lln;
+    if (environmentUpdates != null) {
+      data['environmentUpdates'] = environmentUpdates?.map((v) => v.toJson()).toList();
     }
     return data;
   }
 }
 
 class EnvironmentUpdates {
-  int id;
-  num index;
-  num times;
-  int tbEnvironmentalId;
-  String tbEnvironmentalName;
-  String tbEnvironmentalUnit;
-  String tbEnvironmentalDescription;
-  int tbActivityId;
-  num tbEquipmentOfCustomerId;
+  int? id;
+  num? index;
+  num? times;
+  int? tbEnvironmentalId;
+  String? tbEnvironmentalName;
+  String? tbEnvironmentalUnit;
+  String? tbEnvironmentalDescription;
+  int? tbActivityId;
+  num? tbEquipmentOfCustomerId;
 
   EnvironmentUpdates(
       {this.id,
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['index'] = this.index;
-    data['times'] = this.times;
-    data['tbEnvironmentalId'] = this.tbEnvironmentalId;
-    data['tbEnvironmentalName'] = this.tbEnvironmentalName;
-    data['tbEnvironmentalUnit'] = this.tbEnvironmentalUnit;
-    data['tbEnvironmentalDescription'] = this.tbEnvironmentalDescription;
-    data['tbActivityId'] = this.tbActivityId;
-    data['tbEquipmentOfCustomerId'] = this.tbEquipmentOfCustomerId;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['index'] = index;
+    data['times'] = times;
+    data['tbEnvironmentalId'] = tbEnvironmentalId;
+    data['tbEnvironmentalName'] = tbEnvironmentalName;
+    data['tbEnvironmentalUnit'] = tbEnvironmentalUnit;
+    data['tbEnvironmentalDescription'] = tbEnvironmentalDescription;
+    data['tbActivityId'] = tbActivityId;
+    data['tbEquipmentOfCustomerId'] = tbEquipmentOfCustomerId;
     return data;
   }
 }

lib/custom_model/EnvironmentParameter.dart

 class EnvironmentParameter {
-  int id;
-  String name;
-  num index;
-  int activityId;
-  String executeDate;
-  bool status;
+  int? id;
+  String? name;
+  num? index;
+  int? activityId;
+  String? executeDate;
+  bool? status;
 
-  EnvironmentParameter(
-      {this.id,
-      this.name,
-      this.index,
-      this.activityId,
-      this.executeDate,
-      this.status});
+  EnvironmentParameter({this.id, this.name, this.index, this.activityId, this.executeDate, this.status});
 
   EnvironmentParameter.clone(EnvironmentParameter e) {
-    this.id = e.id;
-    this.name = e.name;
-    this.index = e.index;
-    this.activityId = e.activityId;
-    this.executeDate = e.executeDate;
-    this.status = e.status;
+    id = e.id;
+    name = e.name;
+    index = e.index;
+    activityId = e.activityId;
+    executeDate = e.executeDate;
+    status = e.status;
   }
 
   EnvironmentParameter.fromJson(Map<String, dynamic> json) {
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['name'] = this.name;
-    data['index'] = this.index;
-    data['activityId'] = this.activityId;
-    data['executeDate'] = this.executeDate;
-    data['status'] = this.status;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['name'] = name;
+    data['index'] = index;
+    data['activityId'] = activityId;
+    data['executeDate'] = executeDate;
+    data['status'] = status;
     return data;
   }
 }

lib/custom_model/ErrorCommon.dart

 class ErrorCommon {
-  String entityName;
-  String errorKey;
-  int status;
+  String? entityName;
+  String? errorKey;
+  int? status;
 
   ErrorCommon({this.entityName, this.errorKey, this.status});
 
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['entityName'] = this.entityName;
-    data['errorKey'] = this.errorKey;
-    data['status'] = this.status;
+    final data = <String, dynamic>{};
+    data['entityName'] = entityName;
+    data['errorKey'] = errorKey;
+    data['status'] = status;
     return data;
   }
 }

lib/custom_model/Harvest.dart

 class Harvest {
-  int id;
-  int cropId;
-  int activityId;
-  String executeDate;
-  String description;
-  String executeBy;
-  String media;
-  List<String> mediaDel;
-  num collectedQuantityLv1;
-  num collectedQuantityLv2;
-  num collectedQuantityLv3;
-  num removedQuantity;
+  int? id;
+  int? cropId;
+  int? activityId;
+  String? executeDate;
+  String? description;
+  String? executeBy;
+  String? media;
+  List<String>? mediaDel;
+  num? collectedQuantityLv1;
+  num? collectedQuantityLv2;
+  num? collectedQuantityLv3;
+  num? removedQuantity;
 
   Harvest(
       {this.id,
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['cropId'] = this.cropId;
-    data['activityId'] = this.activityId;
-    data['executeDate'] = this.executeDate;
-    data['description'] = this.description;
-    data['executeBy'] = this.executeBy;
-    data['media'] = this.media;
-    data['media_del'] = this.mediaDel;
-    data['collectedQuantityLv1'] = this.collectedQuantityLv1;
-    data['collectedQuantityLv2'] = this.collectedQuantityLv2;
-    data['collectedQuantityLv3'] = this.collectedQuantityLv3;
-    data['removedQuantity'] = this.removedQuantity;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['cropId'] = cropId;
+    data['activityId'] = activityId;
+    data['executeDate'] = executeDate;
+    data['description'] = description;
+    data['executeBy'] = executeBy;
+    data['media'] = media;
+    data['media_del'] = mediaDel;
+    data['collectedQuantityLv1'] = collectedQuantityLv1;
+    data['collectedQuantityLv2'] = collectedQuantityLv2;
+    data['collectedQuantityLv3'] = collectedQuantityLv3;
+    data['removedQuantity'] = removedQuantity;
     return data;
   }
 }

lib/custom_model/HarvestProcess.dart

 import 'SuppliesUsing.dart';
 
 class HarvestProcess {
-  int id;
-  int cropId;
-  int activityId;
-  int harvestId;
-  String executeDate;
-  String description;
-  String executeBy;
-  String media;
-  List<String> mediaDel;
-  num quantityLv1;
-  num quantityLv2;
-  num quantityLv3;
-  num removedQuantity;
-  List<SuppliesUsing> suppliesUsing;
+  int? id;
+  int? cropId;
+  int? activityId;
+  int? harvestId;
+  String? executeDate;
+  String? description;
+  String? executeBy;
+  String? media;
+  List<String>? mediaDel;
+  num? quantityLv1;
+  num? quantityLv2;
+  num? quantityLv3;
+  num? removedQuantity;
+  List<SuppliesUsing>? suppliesUsing;
 
   HarvestProcess(
       {this.id,
     quantityLv3 = json['quantityLv3'];
     removedQuantity = json['removedQuantity'];
     if (json['suppliesUsing'] != null) {
-      suppliesUsing = new List<SuppliesUsing>();
+      suppliesUsing = <SuppliesUsing>[];
       json['suppliesUsing'].forEach((v) {
-        suppliesUsing.add(new SuppliesUsing.fromJson(v));
+        suppliesUsing?.add(SuppliesUsing.fromJson(v));
       });
     }
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['cropId'] = this.cropId;
-    data['activityId'] = this.activityId;
-    data['harvestId'] = this.harvestId;
-    data['executeDate'] = this.executeDate;
-    data['description'] = this.description;
-    data['executeBy'] = this.executeBy;
-    data['media'] = this.media;
-    data['media_del'] = this.mediaDel;
-    data['quantityLv1'] = this.quantityLv1;
-    data['quantityLv2'] = this.quantityLv2;
-    data['quantityLv3'] = this.quantityLv3;
-    data['removedQuantity'] = this.removedQuantity;
-    if (this.suppliesUsing != null) {
-      data['suppliesUsing'] =
-          this.suppliesUsing.map((v) => v.toJson()).toList();
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['cropId'] = cropId;
+    data['activityId'] = activityId;
+    data['harvestId'] = harvestId;
+    data['executeDate'] = executeDate;
+    data['description'] = description;
+    data['executeBy'] = executeBy;
+    data['media'] = media;
+    data['media_del'] = mediaDel;
+    data['quantityLv1'] = quantityLv1;
+    data['quantityLv2'] = quantityLv2;
+    data['quantityLv3'] = quantityLv3;
+    data['removedQuantity'] = removedQuantity;
+    if (suppliesUsing != null) {
+      data['suppliesUsing'] = suppliesUsing?.map((v) => v.toJson()).toList();
     }
     return data;
   }

lib/custom_model/LocationUnit.dart

 class LocationUnit {
-  int id;
-  String name;
-  bool isSelected;
+  int? id;
+  String? name;
+  bool? isSelected;
 
   LocationUnit({this.id, this.name});
 
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['name'] = this.name;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['name'] = name;
     return data;
   }
 }

lib/custom_model/Media.dart

 class Media {
-  String pathFile;
-  bool isVideo;
-  bool isServerFile = false;
+  String? pathFile;
+  bool? isVideo;
+  bool? isServerFile = false;
 }

lib/custom_model/NotificationDTO.dart

 class NotificationDTO {
-  int id;
-  String subject;
-  String message;
-  int tbCropId;
-  int tbEntityId;
-  String contents;
-  String createdDate;
-  String sendDate;
-  int isRead;
-  String type;
+  int? id;
+  String? subject;
+  String? message;
+  int? tbCropId;
+  int? tbEntityId;
+  String? contents;
+  String? createdDate;
+  String? sendDate;
+  int? isRead;
+  String? type;
 
   NotificationDTO(
-      {this.id,
-      this.subject,
-      this.message,
-      this.tbCropId,
-      this.tbEntityId,
-      this.contents,
-      this.createdDate,
-      this.sendDate,
-      this.type,
-      this.isRead});
+      {this.id, this.subject, this.message, this.tbCropId, this.tbEntityId, this.contents, this.createdDate, this.sendDate, this.type, this.isRead});
   NotificationDTO.clone(NotificationDTO noti) {
-    this.id = noti.id;
-    this.contents = noti.contents;
-    this.tbCropId = noti.tbCropId;
-    this.tbEntityId = noti.tbEntityId;
-    this.subject = noti.subject;
-    this.message = noti.message;
-    this.createdDate = noti.createdDate;
-    this.sendDate = noti.sendDate;
-    this.type = noti.type;
-    this.isRead = noti.isRead;
+    id = noti.id;
+    contents = noti.contents;
+    tbCropId = noti.tbCropId;
+    tbEntityId = noti.tbEntityId;
+    subject = noti.subject;
+    message = noti.message;
+    createdDate = noti.createdDate;
+    sendDate = noti.sendDate;
+    type = noti.type;
+    isRead = noti.isRead;
   }
   NotificationDTO.fromJson(Map<String, dynamic> json) {
     id = json['id'];
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['subject'] = this.subject;
-    data['message'] = this.message;
-    data['tbCropId'] = this.tbCropId;
-    data['tbEntityId'] = this.tbEntityId;
-    data['contents'] = this.contents;
-    data['createdDate'] = this.createdDate;
-    data['sendDate'] = this.sendDate;
-    data['type'] = this.type;
-    data['isRead'] = this.isRead;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['subject'] = subject;
+    data['message'] = message;
+    data['tbCropId'] = tbCropId;
+    data['tbEntityId'] = tbEntityId;
+    data['contents'] = contents;
+    data['createdDate'] = createdDate;
+    data['sendDate'] = sendDate;
+    data['type'] = type;
+    data['isRead'] = isRead;
     return data;
   }
 }

lib/custom_model/NotificationObjectDTO.dart

 import 'NotificationDTO.dart';
 
 class NotificationObjectDTO {
-  int numberUnreadPage;
-  int numberReadPage;
-  int numberUnreadTotal;
-  int numberReadTotal;
-  List<NotificationDTO> notificationDTO;
+  int? numberUnreadPage;
+  int? numberReadPage;
+  int? numberUnreadTotal;
+  int? numberReadTotal;
+  List<NotificationDTO>? notificationDTO;
 
-  NotificationObjectDTO(
-      {this.numberUnreadPage,
-      this.numberReadPage,
-      this.numberUnreadTotal,
-      this.numberReadTotal,
-      this.notificationDTO});
+  NotificationObjectDTO({this.numberUnreadPage, this.numberReadPage, this.numberUnreadTotal, this.numberReadTotal, this.notificationDTO});
 
   NotificationObjectDTO.fromJson(Map<String, dynamic> json) {
     numberUnreadPage = json['numberUnreadPage'];
     numberUnreadTotal = json['numberUnreadTotal'];
     numberReadTotal = json['numberReadTotal'];
     if (json['tbnotificationDTOs'] != null) {
-      notificationDTO = new List<NotificationDTO>();
+      notificationDTO = <NotificationDTO>[];
       json['tbnotificationDTOs'].forEach((v) {
-        notificationDTO.add(new NotificationDTO.fromJson(v));
+        notificationDTO?.add(NotificationDTO.fromJson(v));
       });
     }
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['numberUnreadPage'] = this.numberUnreadPage;
-    data['numberReadPage'] = this.numberReadPage;
-    data['numberUnreadTotal'] = this.numberUnreadTotal;
-    data['numberReadTotal'] = this.numberReadTotal;
-    if (this.notificationDTO != null) {
-      data['tbnotificationDTOs'] =
-          this.notificationDTO.map((v) => v.toJson()).toList();
+    final data = <String, dynamic>{};
+    data['numberUnreadPage'] = numberUnreadPage;
+    data['numberReadPage'] = numberReadPage;
+    data['numberUnreadTotal'] = numberUnreadTotal;
+    data['numberReadTotal'] = numberReadTotal;
+    if (notificationDTO != null) {
+      data['tbnotificationDTOs'] = notificationDTO?.map((v) => v.toJson()).toList();
     }
     return data;
   }

lib/custom_model/Nursery.dart

 import 'NurseryDetail.dart';
 
 class Nursery {
-  int id;
-  int activityId;
-  int cropId;
-  String executeDate;
-  String description;
-  String executeBy;
-  String media;
-  List<String> mediaDel;
-  String seedName;
-  num substratesId;
-  String substrateName;
-  num seedLength;
-  num quantity;
-  num seedIncubationTime;
-  List<NurseryDetail> nurseryDetail;
+  int? id;
+  int? activityId;
+  int? cropId;
+  String? executeDate;
+  String? description;
+  String? executeBy;
+  String? media;
+  List<String>? mediaDel;
+  String? seedName;
+  num? substratesId;
+  String? substrateName;
+  num? seedLength;
+  num? quantity;
+  num? seedIncubationTime;
+  List<NurseryDetail>? nurseryDetail;
 
   Nursery(
       {this.id,
     quantity = json['quantity'];
     seedIncubationTime = json['seedIncubationTime'];
     if (json['nurseryDetail'] != null) {
-      nurseryDetail = new List<NurseryDetail>();
+      nurseryDetail = <NurseryDetail>[];
       json['nurseryDetail'].forEach((v) {
-        nurseryDetail.add(new NurseryDetail.fromJson(v));
+        nurseryDetail?.add(NurseryDetail.fromJson(v));
       });
     }
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['activityId'] = this.activityId;
-    data['cropId'] = this.cropId;
-    data['executeDate'] = this.executeDate;
-    data['description'] = this.description;
-    data['executeBy'] = this.executeBy;
-    data['media'] = this.media;
-    data['media_del'] = this.mediaDel;
-    data['seedName'] = this.seedName;
-    data['substratesId'] = this.substratesId;
-    data['substrateName'] = this.substrateName;
-    data['seedLength'] = this.seedLength;
-    data['quantity'] = this.quantity;
-    data['seedIncubationTime'] = this.seedIncubationTime;
-    if (this.nurseryDetail != null) {
-      data['nurseryDetail'] =
-          this.nurseryDetail.map((v) => v.toJson()).toList();
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['activityId'] = activityId;
+    data['cropId'] = cropId;
+    data['executeDate'] = executeDate;
+    data['description'] = description;
+    data['executeBy'] = executeBy;
+    data['media'] = media;
+    data['media_del'] = mediaDel;
+    data['seedName'] = seedName;
+    data['substratesId'] = substratesId;
+    data['substrateName'] = substrateName;
+    data['seedLength'] = seedLength;
+    data['quantity'] = quantity;
+    data['seedIncubationTime'] = seedIncubationTime;
+    if (nurseryDetail != null) {
+      data['nurseryDetail'] = nurseryDetail?.map((v) => v.toJson()).toList();
     }
     return data;
   }

lib/custom_model/NurseryDetail.dart

 class NurseryDetail {
-  int id;
-  String workerName;
-  String trayNumber;
-  int tbNurseryId;
+  int? id;
+  String? workerName;
+  String? trayNumber;
+  int? tbNurseryId;
 
   NurseryDetail({this.id, this.workerName, this.trayNumber, this.tbNurseryId});
 
   NurseryDetail.clone(NurseryDetail nurseryDetail) {
-    this.id = nurseryDetail.id;
-    this.workerName = nurseryDetail.workerName;
-    this.trayNumber = nurseryDetail.trayNumber;
-    this.tbNurseryId = nurseryDetail.tbNurseryId;
+    id = nurseryDetail.id;
+    workerName = nurseryDetail.workerName;
+    trayNumber = nurseryDetail.trayNumber;
+    tbNurseryId = nurseryDetail.tbNurseryId;
   }
 
   NurseryDetail.fromJson(Map<String, dynamic> json) {
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['workerName'] = this.workerName;
-    data['trayNumber'] = this.trayNumber;
-    data['tbNurseryId'] = this.tbNurseryId;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['workerName'] = workerName;
+    data['trayNumber'] = trayNumber;
+    data['tbNurseryId'] = tbNurseryId;
     return data;
   }
 }

lib/custom_model/Other.dart

 class Other {
-  int id;
-  int cropId;
-  int activityId;
-  String media;
-  List<String> mediaDel;
-  String executeDate;
-  String description;
-  String createdByName;
-  String activityTypeName;
+  int? id;
+  int? cropId;
+  int? activityId;
+  String? media;
+  List<String>? mediaDel;
+  String? executeDate;
+  String? description;
+  String? createdByName;
+  String? activityTypeName;
 
   Other(
       {this.id,
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['cropId'] = this.cropId;
-    data['activityId'] = this.activityId;
-    data['media'] = this.media;
-    data['media_del'] = this.mediaDel;
-    data['executeDate'] = this.executeDate;
-    data['description'] = this.description;
-    data['createdByName'] = this.createdByName;
-    data['activityTypeName'] = this.activityTypeName;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['cropId'] = cropId;
+    data['activityId'] = activityId;
+    data['media'] = media;
+    data['media_del'] = mediaDel;
+    data['executeDate'] = executeDate;
+    data['description'] = description;
+    data['createdByName'] = createdByName;
+    data['activityTypeName'] = activityTypeName;
     return data;
   }
 }

lib/custom_model/Packing.dart

 class Packing {
-  int id;
-  int cropId;
-  int activityId;
-  int harvestId;
-  String executeDate;
-  String description;
-  String executeBy;
-  String media;
-  List<String> mediaDel;
-  num quantityLv1;
-  num quantityLv2;
-  num quantityLv3;
-  num removedQuantity;
+  int? id;
+  int? cropId;
+  int? activityId;
+  int? harvestId;
+  String? executeDate;
+  String? description;
+  String? executeBy;
+  String? media;
+  List<String>? mediaDel;
+  num? quantityLv1;
+  num? quantityLv2;
+  num? quantityLv3;
+  num? removedQuantity;
 
   Packing(
       {this.id,
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['cropId'] = this.cropId;
-    data['activityId'] = this.activityId;
-    data['harvestId'] = this.harvestId;
-    data['executeDate'] = this.executeDate;
-    data['description'] = this.description;
-    data['executeBy'] = this.executeBy;
-    data['media'] = this.media;
-    data['media_del'] = this.mediaDel;
-    data['quantityLv1'] = this.quantityLv1;
-    data['quantityLv2'] = this.quantityLv2;
-    data['quantityLv3'] = this.quantityLv3;
-    data['removedQuantity'] = this.removedQuantity;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['cropId'] = cropId;
+    data['activityId'] = activityId;
+    data['harvestId'] = harvestId;
+    data['executeDate'] = executeDate;
+    data['description'] = description;
+    data['executeBy'] = executeBy;
+    data['media'] = media;
+    data['media_del'] = mediaDel;
+    data['quantityLv1'] = quantityLv1;
+    data['quantityLv2'] = quantityLv2;
+    data['quantityLv3'] = quantityLv3;
+    data['removedQuantity'] = removedQuantity;
     return data;
   }
 }

lib/custom_model/Plant.dart

 import 'SuppliesUsing.dart';
 
 class Plant {
-  int id;
-  int cropId;
-  int activityId;
-  String executeDate;
-  String description;
-  String executeBy;
-  String density;
-  num quantity;
-  String media;
-  List<String> mediaDel;
-  List<SuppliesUsing> suppliesUsing;
+  int? id;
+  int? cropId;
+  int? activityId;
+  String? executeDate;
+  String? description;
+  String? executeBy;
+  String? density;
+  num? quantity;
+  String? media;
+  List<String>? mediaDel;
+  List<SuppliesUsing>? suppliesUsing;
 
   Plant(
       {this.id,
     quantity = json['quantity'];
     media = json['media'];
     if (json['suppliesUsing'] != null) {
-      suppliesUsing = new List<SuppliesUsing>();
+      suppliesUsing = <SuppliesUsing>[];
       json['suppliesUsing'].forEach((v) {
-        suppliesUsing.add(new SuppliesUsing.fromJson(v));
+        suppliesUsing?.add(SuppliesUsing.fromJson(v));
       });
     }
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['activityId'] = this.activityId;
-    data['cropId'] = this.cropId;
-    data['executeDate'] = this.executeDate;
-    data['description'] = this.description;
-    data['executeBy'] = this.executeBy;
-    data['density'] = this.density;
-    data['quantity'] = this.quantity;
-    data['media'] = this.media;
-    data['media_del'] = this.mediaDel;
-    if (this.suppliesUsing != null) {
-      data['suppliesUsing'] =
-          this.suppliesUsing.map((v) => v.toJson()).toList();
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['activityId'] = activityId;
+    data['cropId'] = cropId;
+    data['executeDate'] = executeDate;
+    data['description'] = description;
+    data['executeBy'] = executeBy;
+    data['density'] = density;
+    data['quantity'] = quantity;
+    data['media'] = media;
+    data['media_del'] = mediaDel;
+    if (suppliesUsing != null) {
+      data['suppliesUsing'] = suppliesUsing?.map((v) => v.toJson()).toList();
     }
     return data;
   }

lib/custom_model/RequestDisease.dart

 class RequestDisease {
-  int id;
-  int activityId;
-  int cropId;
-  String executeDate;
-  String description;
-  List<String> mediaDel;
-  List<ObjectUpdateDetail> objectUpdateDetail;
+  int? id;
+  int? activityId;
+  int? cropId;
+  String? executeDate;
+  String? description;
+  List<String>? mediaDel;
+  List<ObjectUpdateDetail>? objectUpdateDetail;
 
-  RequestDisease(
-      {this.id,
-      this.activityId,
-      this.cropId,
-      this.executeDate,
-      this.description,
-      this.mediaDel,
-      this.objectUpdateDetail});
+  RequestDisease({this.id, this.activityId, this.cropId, this.executeDate, this.description, this.mediaDel, this.objectUpdateDetail});
 
   RequestDisease.fromJson(Map<String, dynamic> json) {
     id = json['id'];
     executeDate = json['executeDate'];
     description = json['description'];
     if (json['objectUpdateDetail'] != null) {
-      objectUpdateDetail = new List<ObjectUpdateDetail>();
+      objectUpdateDetail = <ObjectUpdateDetail>[];
       json['objectUpdateDetail'].forEach((v) {
-        objectUpdateDetail.add(new ObjectUpdateDetail.fromJson(v));
+        objectUpdateDetail?.add(ObjectUpdateDetail.fromJson(v));
       });
     }
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['cropId'] = this.cropId;
-    data['activityId'] = this.activityId;
-    data['executeDate'] = this.executeDate;
-    data['description'] = this.description;
-    data['media_del'] = this.mediaDel;
-    if (this.objectUpdateDetail != null) {
-      data['objectUpdateDetail'] =
-          this.objectUpdateDetail.map((v) => v.toJson()).toList();
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['cropId'] = cropId;
+    data['activityId'] = activityId;
+    data['executeDate'] = executeDate;
+    data['description'] = description;
+    data['media_del'] = mediaDel;
+    if (objectUpdateDetail != null) {
+      data['objectUpdateDetail'] = objectUpdateDetail?.map((v) => v.toJson()).toList();
     }
     return data;
   }
 }
 
 class ObjectUpdateDetail {
-  int id;
-  String name;
-  String index;
+  int? id;
+  String? name;
+  String? index;
 
   ObjectUpdateDetail({this.id, this.name, this.index});
 
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['name'] = this.name;
-    data['index'] = this.index;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['name'] = name;
+    data['index'] = index;
     return data;
   }
 }

lib/custom_model/RequestEnvironment.dart

 class RequestEnvironment {
-  int activityId;
-  int cropId;
-  String executeDate;
-  String description;
-  List<String> mediaDel;
-  List<EnvDetail> envDetail;
+  int? activityId;
+  int? cropId;
+  String? executeDate;
+  String? description;
+  List<String>? mediaDel;
+  List<EnvDetail>? envDetail;
 
-  RequestEnvironment(
-      {this.activityId,
-      this.cropId,
-      this.executeDate,
-      this.description,
-      this.mediaDel,
-      this.envDetail});
+  RequestEnvironment({this.activityId, this.cropId, this.executeDate, this.description, this.mediaDel, this.envDetail});
 
   RequestEnvironment.fromJson(Map<String, dynamic> json) {
     activityId = json['activityId'];
     executeDate = json['executeDate'];
     description = json['description'];
     if (json['envDetail'] != null) {
-      envDetail = new List<EnvDetail>();
+      envDetail = <EnvDetail>[];
       json['envDetail'].forEach((v) {
-        envDetail.add(new EnvDetail.fromJson(v));
+        envDetail?.add(EnvDetail.fromJson(v));
       });
     }
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['activityId'] = this.activityId;
-    data['cropId'] = this.cropId;
-    data['executeDate'] = this.executeDate;
-    data['description'] = this.description;
-    data['media_del'] = this.mediaDel;
-    if (this.envDetail != null) {
-      data['envDetail'] = this.envDetail.map((v) => v.toJson()).toList();
+    final data = <String, dynamic>{};
+    data['activityId'] = activityId;
+    data['cropId'] = cropId;
+    data['executeDate'] = executeDate;
+    data['description'] = description;
+    data['media_del'] = mediaDel;
+    if (envDetail != null) {
+      data['envDetail'] = envDetail?.map((v) => v.toJson()).toList();
     }
     return data;
   }
 }
 
 class EnvDetail {
-  String name;
-  String index;
+  String? name;
+  String? index;
 
   EnvDetail({this.name, this.index});
 
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['name'] = this.name;
-    data['index'] = this.index;
+    final data = <String, dynamic>{};
+    data['name'] = name;
+    data['index'] = index;
     return data;
   }
 }

lib/custom_model/RequestGeneralModel.dart

 class RequestGeneralModel {
-  int cropId;
-  int activityId;
-  String executeDate;
-  String description;
-  List<String> mediaDel;
-  List<ObjectUpdateDetail> objectUpdateDetail;
+  int? cropId;
+  int? activityId;
+  String? executeDate;
+  String? description;
+  List<String>? mediaDel;
+  List<ObjectUpdateDetail>? objectUpdateDetail;
 
-  RequestGeneralModel(
-      {this.cropId,
-      this.activityId,
-      this.executeDate,
-      this.description,
-      this.mediaDel,
-      this.objectUpdateDetail});
+  RequestGeneralModel({this.cropId, this.activityId, this.executeDate, this.description, this.mediaDel, this.objectUpdateDetail});
 
   RequestGeneralModel.fromJson(Map<String, dynamic> json) {
     cropId = json['cropId'];
     executeDate = json['executeDate'];
     description = json['description'];
     if (json['objectUpdateDetail'] != null) {
-      objectUpdateDetail = new List<ObjectUpdateDetail>();
+      objectUpdateDetail = <ObjectUpdateDetail>[];
       json['objectUpdateDetail'].forEach((v) {
-        objectUpdateDetail.add(new ObjectUpdateDetail.fromJson(v));
+        objectUpdateDetail?.add(ObjectUpdateDetail.fromJson(v));
       });
     }
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['cropId'] = this.cropId;
-    data['activityId'] = this.activityId;
-    data['executeDate'] = this.executeDate;
-    data['description'] = this.description;
-    data['media_del'] = this.mediaDel;
-    if (this.objectUpdateDetail != null) {
-      data['objectUpdateDetail'] =
-          this.objectUpdateDetail.map((v) => v.toJson()).toList();
+    final data = <String, dynamic>{};
+    data['cropId'] = cropId;
+    data['activityId'] = activityId;
+    data['executeDate'] = executeDate;
+    data['description'] = description;
+    data['media_del'] = mediaDel;
+    if (objectUpdateDetail != null) {
+      data['objectUpdateDetail'] = objectUpdateDetail?.map((v) => v.toJson()).toList();
     }
     return data;
   }
 }
 
 class ObjectUpdateDetail {
-  String name;
-  String index;
+  String? name;
+  String? index;
 
   ObjectUpdateDetail({this.name, this.index});
 
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['name'] = this.name;
-    data['index'] = this.index;
+    final data = <String, dynamic>{};
+    data['name'] = name;
+    data['index'] = index;
     return data;
   }
 }

lib/custom_model/Sell.dart

 class Sell {
-  int id;
-  int cropId;
-  int activityId;
-  int harvestId;
-  String executeDate;
-  String description;
-  String executeBy;
-  String media;
-  List<String> mediaDel;
-  num quantityLv1;
-  num quantityLv2;
-  num quantityLv3;
-  num removedQuantity;
-  String buyer;
+  int? id;
+  int? cropId;
+  int? activityId;
+  int? harvestId;
+  String? executeDate;
+  String? description;
+  String? executeBy;
+  String? media;
+  List<String>? mediaDel;
+  num? quantityLv1;
+  num? quantityLv2;
+  num? quantityLv3;
+  num? removedQuantity;
+  String? buyer;
 
   Sell(
       {this.id,
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['cropId'] = this.cropId;
-    data['activityId'] = this.activityId;
-    data['harvestId'] = this.harvestId;
-    data['executeDate'] = this.executeDate;
-    data['description'] = this.description;
-    data['executeBy'] = this.executeBy;
-    data['media'] = this.media;
-    data['media_del'] = this.mediaDel;
-    data['quantityLv1'] = this.quantityLv1;
-    data['quantityLv2'] = this.quantityLv2;
-    data['quantityLv3'] = this.quantityLv3;
-    data['removedQuantity'] = this.removedQuantity;
-    data['buyer'] = this.buyer;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['cropId'] = cropId;
+    data['activityId'] = activityId;
+    data['harvestId'] = harvestId;
+    data['executeDate'] = executeDate;
+    data['description'] = description;
+    data['executeBy'] = executeBy;
+    data['media'] = media;
+    data['media_del'] = mediaDel;
+    data['quantityLv1'] = quantityLv1;
+    data['quantityLv2'] = quantityLv2;
+    data['quantityLv3'] = quantityLv3;
+    data['removedQuantity'] = removedQuantity;
+    data['buyer'] = buyer;
     return data;
   }
 }

lib/custom_model/Spraying.dart

 import 'SuppliesUsing.dart';
 
 class Spraying {
-  int id;
-  int activityId;
-  int cropId;
-  String media;
-  List<String> mediaDel;
-  String executeDate;
-  num quarantinePeriod;
-  String resultAt;
-  String weatherConditions;
-  String purpose;
-  String description;
-  String executeBy;
-  List<SuppliesUsing> suppliesUsing;
+  int? id;
+  int? activityId;
+  int? cropId;
+  String? media;
+  List<String>? mediaDel;
+  String? executeDate;
+  num? quarantinePeriod;
+  String? resultAt;
+  String? weatherConditions;
+  String? purpose;
+  String? description;
+  String? executeBy;
+  List<SuppliesUsing>? suppliesUsing;
 
   Spraying(
       {this.id,
     description = json['description'];
     executeBy = json['executeBy'];
     if (json['suppliesUsing'] != null) {
-      suppliesUsing = new List<SuppliesUsing>();
+      suppliesUsing = <SuppliesUsing>[];
       json['suppliesUsing'].forEach((v) {
-        suppliesUsing.add(new SuppliesUsing.fromJson(v));
+        suppliesUsing?.add(SuppliesUsing.fromJson(v));
       });
     }
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['activityId'] = this.activityId;
-    data['cropId'] = this.cropId;
-    data['media'] = this.media;
-    data['media_del'] = this.mediaDel;
-    data['executeDate'] = this.executeDate;
-    data['quarantinePeriod'] = this.quarantinePeriod;
-    data['resultAt'] = this.resultAt;
-    data['weatherConditions'] = this.weatherConditions;
-    data['purpose'] = this.purpose;
-    data['description'] = this.description;
-    data['executeBy'] = this.executeBy;
-    if (this.suppliesUsing != null) {
-      data['suppliesUsing'] =
-          this.suppliesUsing.map((v) => v.toJson()).toList();
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['activityId'] = activityId;
+    data['cropId'] = cropId;
+    data['media'] = media;
+    data['media_del'] = mediaDel;
+    data['executeDate'] = executeDate;
+    data['quarantinePeriod'] = quarantinePeriod;
+    data['resultAt'] = resultAt;
+    data['weatherConditions'] = weatherConditions;
+    data['purpose'] = purpose;
+    data['description'] = description;
+    data['executeBy'] = executeBy;
+    if (suppliesUsing != null) {
+      data['suppliesUsing'] = suppliesUsing?.map((v) => v.toJson()).toList();
     }
     return data;
   }

lib/custom_model/SuppliesUsing.dart

 class SuppliesUsing {
-  int id;
-  String dosage;
-  num quantity;
-  String unit;
-  String howToUse;
-  int suppliesInWarehouseId;
-  int tbSuppliesInWarehouseId;
-  String supplyName;
-  String supplyUnit;
-  int tbEquipmentOfCustomerId;
-  int equipmentOfCustomerId;
-  String equipmentName;
+  int? id;
+  String? dosage;
+  num? quantity;
+  String? unit;
+  String? howToUse;
+  int? suppliesInWarehouseId;
+  int? tbSuppliesInWarehouseId;
+  String? supplyName;
+  String? supplyUnit;
+  int? tbEquipmentOfCustomerId;
+  int? equipmentOfCustomerId;
+  String? equipmentName;
 
   SuppliesUsing(
       {this.id,
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['dosage'] = this.dosage;
-    data['quantity'] = this.quantity;
-    data['unit'] = this.unit;
-    data['howToUse'] = this.howToUse;
-    data['suppliesInWarehouseId'] = this.suppliesInWarehouseId;
-    data['tbEquipmentOfCustomerId'] = this.tbEquipmentOfCustomerId;
-    data['equipmentOfCustomerId'] = this.equipmentOfCustomerId;
-    data['equipmentName'] = this.equipmentName;
-    data['tbSuppliesInWarehouseId'] = this.tbSuppliesInWarehouseId;
-    data['supplyName'] = this.supplyName;
-    data['supplyUnit'] = this.supplyUnit;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['dosage'] = dosage;
+    data['quantity'] = quantity;
+    data['unit'] = unit;
+    data['howToUse'] = howToUse;
+    data['suppliesInWarehouseId'] = suppliesInWarehouseId;
+    data['tbEquipmentOfCustomerId'] = tbEquipmentOfCustomerId;
+    data['equipmentOfCustomerId'] = equipmentOfCustomerId;
+    data['equipmentName'] = equipmentName;
+    data['tbSuppliesInWarehouseId'] = tbSuppliesInWarehouseId;
+    data['supplyName'] = supplyName;
+    data['supplyUnit'] = supplyUnit;
     return data;
   }
 }

lib/custom_model/Supply.dart

 class Supply {
-  int id;
-  num quantity;
-  String unit;
-  int tbWarehouseId;
-  String tbWarehouseName;
-  String tbSuppliesName;
-  int tbSuppliesId;
-  bool isSelected;
+  int? id;
+  num? quantity;
+  String? unit;
+  int? tbWarehouseId;
+  String? tbWarehouseName;
+  String? tbSuppliesName;
+  int? tbSuppliesId;
+  bool? isSelected;
 
-  Supply(
-      {this.id,
-      this.quantity,
-      this.unit,
-      this.tbWarehouseId,
-      this.tbWarehouseName,
-      this.tbSuppliesName,
-      this.tbSuppliesId,
-      this.isSelected});
+  Supply({this.id, this.quantity, this.unit, this.tbWarehouseId, this.tbWarehouseName, this.tbSuppliesName, this.tbSuppliesId, this.isSelected});
 
   Supply.fromJson(Map<String, dynamic> json) {
     id = json['id'];
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['quantity'] = this.quantity;
-    data['unit'] = this.unit;
-    data['tbWarehouseId'] = this.tbWarehouseId;
-    data['tbWarehouseName'] = this.tbWarehouseName;
-    data['tbSuppliesName'] = this.tbSuppliesName;
-    data['tbSuppliesId'] = this.tbSuppliesId;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['quantity'] = quantity;
+    data['unit'] = unit;
+    data['tbWarehouseId'] = tbWarehouseId;
+    data['tbWarehouseName'] = tbWarehouseName;
+    data['tbSuppliesName'] = tbSuppliesName;
+    data['tbSuppliesId'] = tbSuppliesId;
     return data;
   }
 }

lib/custom_model/UpdateNoti.dart

 class UpdateNoti {
-  int id;
-  int isRead;
+  int? id;
+  int? isRead;
 
   UpdateNoti({this.id, this.isRead});
 
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['isRead'] = this.isRead;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['isRead'] = isRead;
     return data;
   }
 }

lib/custom_model/UseWater.dart

 class UseWater {
-  int id;
-  int activityId;
-  int cropId;
-  String executeDate;
-  String media;
-  List<String> mediaDel;
-  String waterType;
-  num amount;
-  String description;
-  String executeBy;
+  int? id;
+  int? activityId;
+  int? cropId;
+  String? executeDate;
+  String? media;
+  List<String>? mediaDel;
+  String? waterType;
+  num? amount;
+  String? description;
+  String? executeBy;
 
   UseWater(
       {this.id,
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['id'] = this.id;
-    data['activityId'] = this.activityId;
-    data['cropId'] = this.cropId;
-    data['executeDate'] = this.executeDate;
-    data['media'] = this.media;
-    data['media_del'] = this.mediaDel;
-    data['waterType'] = this.waterType;
-    data['amount'] = this.amount;
-    data['description'] = this.description;
-    data['executeBy'] = this.executeBy;
+    final data = <String, dynamic>{};
+    data['id'] = id;
+    data['activityId'] = activityId;
+    data['cropId'] = cropId;
+    data['executeDate'] = executeDate;
+    data['media'] = media;
+    data['media_del'] = mediaDel;
+    data['waterType'] = waterType;
+    data['amount'] = amount;
+    data['description'] = description;
+    data['executeBy'] = executeBy;
     return data;
   }
 }

lib/custom_model/WaterType.dart

 class WaterType {
-  String waterTypeName;
-  String waterTypeDescription;
+  String? waterTypeName;
+  String? waterTypeDescription;
 
   WaterType({this.waterTypeName, this.waterTypeDescription});
 
   }
 
   Map<String, dynamic> toJson() {
-    final Map<String, dynamic> data = new Map<String, dynamic>();
-    data['waterTypeName'] = this.waterTypeName;
-    data['waterTypeDescription'] = this.waterTypeDescription;
+    final data = <String, dynamic>{};
+    data['waterTypeName'] = waterTypeName;
+    data['waterTypeDescription'] = waterTypeDescription;
     return data;
   }
 }

lib/custom_model/account.dart

-import 'package:json_annotation/json_annotation.dart';
-
-part 'account.g.dart';
-
-@JsonSerializable()
 class Account {
-  Account();
+  num? id;
+  String? login;
+  String? firstName;
+  String? lastName;
+  String? midleName;
+  String? fullName;
+  String? phone;
+  String? address;
+  String? avartar;
+  num? vaiTroId;
+  String? tenVaiTro;
+  num? donViCanhTacId;
+  String? tenDonVi;
+  String? email;
+  String? imageUrl;
+  bool? activated;
+  num? countryId;
+  String? countryName;
+  num? cityId;
+  String? cityName;
+  num? districtId;
+  String? districtName;
+  num? wardId;
+  String? wardName;
+  List<String>? authorities;
+
+  Account(
+      {this.id,
+      this.login,
+      this.firstName,
+      this.lastName,
+      this.midleName,
+      this.fullName,
+      this.phone,
+      this.address,
+      this.avartar,
+      this.vaiTroId,
+      this.tenVaiTro,
+      this.donViCanhTacId,
+      this.tenDonVi,
+      this.email,
+      this.imageUrl,
+      this.activated,
+      this.countryId,
+      this.countryName,
+      this.cityId,
+      this.cityName,
+      this.districtId,
+      this.districtName,
+      this.wardId,
+      this.wardName,
+      this.authorities});
 
-  num id;
-  String login;
-  String firstName;
-  String lastName;
-  String midleName;
-  String fullName;
-  String phone;
-  String address;
-  String avartar;
-  num vaiTroId;
-  String tenVaiTro;
-  num donViCanhTacId;
-  String tenDonVi;
-  String email;
-  String imageUrl;
-  bool activated;
-  int countryId;
-  String countryName;
-  int cityId;
-  String cityName;
-  int districtId;
-  String districtName;
-  int wardId;
-  String wardName;
-  List authorities;
+  Account.fromJson(Map<String, dynamic> json) {
+    id = json['id'];
+    login = json['login'];
+    firstName = json['firstName'];
+    lastName = json['lastName'];
+    midleName = json['midleName'];
+    fullName = json['fullName'];
+    phone = json['phone'];
+    address = json['address'];
+    avartar = json['avartar'];
+    vaiTroId = json['vaiTroId'];
+    tenVaiTro = json['tenVaiTro'];
+    donViCanhTacId = json['donViCanhTacId'];
+    tenDonVi = json['tenDonVi'];
+    email = json['email'];
+    imageUrl = json['imageUrl'];
+    activated = json['activated'];
+    countryId = json['countryId'];
+    countryName = json['countryName'];
+    cityId = json['cityId'];
+    cityName = json['cityName'];
+    districtId = json['districtId'];
+    districtName = json['districtName'];
+    wardId = json['wardId'];
+    wardName = json['wardName'];
+    authorities = json['authorities'].cast<String>();
+  }
 
-  factory Account.fromJson(Map<String, dynamic> json) =>
-      _$AccountFromJson(json);
-  Map<String, dynamic> toJson() => _$AccountToJson(this);
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = new Map<String, dynamic>();
+    data['id'] = this.id;
+    data['login'] = this.login;
+    data['firstName'] = this.firstName;
+    data['lastName'] = this.lastName;
+    data['midleName'] = this.midleName;
+    data['fullName'] = this.fullName;
+    data['phone'] = this.phone;
+    data['address'] = this.address;
+    data['avartar'] = this.avartar;
+    data['vaiTroId'] = this.vaiTroId;
+    data['tenVaiTro'] = this.tenVaiTro;
+    data['donViCanhTacId'] = this.donViCanhTacId;
+    data['tenDonVi'] = this.tenDonVi;
+    data['email'] = this.email;
+    data['imageUrl'] = this.imageUrl;
+    data['activated'] = this.activated;
+    data['countryId'] = this.countryId;
+    data['countryName'] = this.countryName;
+    data['cityId'] = this.cityId;
+    data['cityName'] = this.cityName;
+    data['districtId'] = this.districtId;
+    data['districtName'] = this.districtName;
+    data['wardId'] = this.wardId;
+    data['wardName'] = this.wardName;
+    data['authorities'] = this.authorities;
+    return data;
+  }
 }

lib/custom_model/account.g.dart

-// GENERATED CODE - DO NOT MODIFY BY HAND
-
-part of 'account.dart';
-
-// **************************************************************************
-// JsonSerializableGenerator
-// **************************************************************************
-
-Account _$AccountFromJson(Map<String, dynamic> json) {
-  return Account()
-    ..id = json['id'] as num
-    ..login = json['login'] as String
-    ..firstName = json['firstName'] as String
-    ..lastName = json['lastName'] as String
-    ..midleName = json['midleName'] as String
-    ..fullName = json['fullName'] as String
-    ..phone = json['phone'] as String
-    ..address = json['address'] as String
-    ..avartar = json['avartar'] as String
-    ..vaiTroId = json['vaiTroId'] as num
-    ..tenVaiTro = json['tenVaiTro'] as String
-    ..donViCanhTacId = json['donViCanhTacId'] as num
-    ..tenDonVi = json['tenDonVi'] as String
-    ..email = json['email'] as String
-    ..imageUrl = json['imageUrl'] as String
-    ..activated = json['activated'] as bool
-    ..countryId = json['countryId'] as num
-    ..countryName = json['countryName'] as String
-    ..cityId = json['cityId'] as num
-    ..cityName = json['cityName'] as String
-    ..districtId = json['districtId'] as num
-    ..districtName = json['districtName'] as String
-    ..wardId = json['wardId'] as num
-    ..wardName = json['wardName'] as String
-    ..authorities = json['authorities'] as List;
-}
-
-Map<String, dynamic> _$AccountToJson(Account instance) => <String, dynamic>{
-      'id': instance.id,
-      'login': instance.login,
-      'firstName': instance.firstName,
-      'lastName': instance.lastName,
-      'midleName': instance.midleName,
-      'fullName': instance.fullName,
-      'phone': instance.phone,
-      'address': instance.address,
-      'avartar': instance.avartar,
-      'vaiTroId': instance.vaiTroId,
-      'tenVaiTro': instance.tenVaiTro,
-      'donViCanhTacId': instance.donViCanhTacId,
-      'tenDonVi': instance.tenDonVi,
-      'email': instance.email,
-      'imageUrl': instance.imageUrl,
-      'activated': instance.activated,
-      'countryId': instance.countryId,
-      'countryName': instance.countryName,
-      'cityId': instance.cityId,
-      'cityName': instance.cityName,
-      'districtId': instance.districtId,
-      'districtName': instance.districtName,
-      'wardId': instance.wardId,
-      'wardName': instance.wardName,
-      'authorities': instance.authorities,
-    };

lib/custom_model/password.dart

-import 'package:json_annotation/json_annotation.dart';
+class Password {
+  String? key;
+  String? currentPassword;
+  String? newPassword;
 
-part 'password.g.dart';
+  Password({this.key, this.currentPassword, this.newPassword});
 
-@JsonSerializable()
-class Password {
-    Password();
+  Password.fromJson(Map<String, dynamic> json) {
+    key = json['key'];
+    currentPassword = json['currentPassword'];
+    newPassword = json['newPassword'];
+  }
 
-    String key;
-    String currentPassword;
-    String newPassword;
-    
-    factory Password.fromJson(Map<String,dynamic> json) => _$PasswordFromJson(json);
-    Map<String, dynamic> toJson() => _$PasswordToJson(this);
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = new Map<String, dynamic>();
+    data['key'] = this.key;
+    data['currentPassword'] = this.currentPassword;
+    data['newPassword'] = this.newPassword;
+    return data;
+  }
 }

lib/custom_model/password.g.dart

-// GENERATED CODE - DO NOT MODIFY BY HAND
-
-part of 'password.dart';
-
-// **************************************************************************
-// JsonSerializableGenerator
-// **************************************************************************
-
-Password _$PasswordFromJson(Map<String, dynamic> json) {
-  return Password()
-    ..key = json['key'] as String
-    ..currentPassword = json['currentPassword'] as String
-    ..newPassword = json['newPassword'] as String;
-}
-
-Map<String, dynamic> _$PasswordToJson(Password instance) => <String, dynamic>{
-      'key': instance.key,
-      'currentPassword': instance.currentPassword,
-      'newPassword': instance.newPassword,
-    };

lib/custom_model/user.dart

-import 'package:json_annotation/json_annotation.dart';
-
-part 'user.g.dart';
-
-@JsonSerializable()
 class User {
-  User();
+  String? idToken;
+
+  User({this.idToken});
 
-  String idToken;
+  User.fromJson(Map<String, dynamic> json) {
+    idToken = json['idToken'];
+  }
 
-  factory User.fromJson(Map<String, dynamic> json) => _$UserFromJson(json);
-  Map<String, dynamic> toJson() => _$UserToJson(this);
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = new Map<String, dynamic>();
+    data['idToken'] = this.idToken;
+    return data;
+  }
 }

lib/custom_model/user.g.dart

-// GENERATED CODE - DO NOT MODIFY BY HAND
-
-part of 'user.dart';
-
-// **************************************************************************
-// JsonSerializableGenerator
-// **************************************************************************
-
-User _$UserFromJson(Map<String, dynamic> json) {
-  return User()..idToken = json['id_token'] as String;
-}
-
-Map<String, dynamic> _$UserToJson(User instance) => <String, dynamic>{
-      'id_token': instance.idToken,
-    };

lib/custom_model/user_request.dart

-import 'package:json_annotation/json_annotation.dart';
-part 'user_request.g.dart';
-
-@JsonSerializable()
 class UserRequest {
-  final String username;
-  final String password;
+  String? username;
+  String? password;
+
   UserRequest({this.username, this.password});
 
-  factory UserRequest.fromJson(Map<String, dynamic> json) =>
-      _$UserRequestFromJson(json);
-  Map<String, dynamic> toJson() => _$UserRequestToJson(this);
+  UserRequest.fromJson(Map<String, dynamic> json) {
+    username = json['username'];
+    password = json['password'];
+  }
+
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = new Map<String, dynamic>();
+    data['username'] = this.username;
+    data['password'] = this.password;
+    return data;
+  }
 }

lib/custom_model/user_request.g.dart

-// GENERATED CODE - DO NOT MODIFY BY HAND
-
-part of 'user_request.dart';
-
-// **************************************************************************
-// JsonSerializableGenerator
-// **************************************************************************
-
-UserRequest _$UserRequestFromJson(Map<String, dynamic> json) {
-  return UserRequest(
-    username: json['username'] as String,
-    password: json['password'] as String,
-  );
-}
-
-Map<String, dynamic> _$UserRequestToJson(UserRequest instance) =>
-    <String, dynamic>{
-      'username': instance.username,
-      'password': instance.password,
-    };

lib/data/api/app_exception.dart

 import 'package:farm_tpf/utils/const_string.dart';
 
 class AppException {
-  static String handleError(dynamic error, {String customMessageError}) {
-    String errorDescription = "";
+  static String handleError(dynamic error, {String? customMessageError}) {
+    var errorDescription = "";
 
     try {
-      DioError dioError = error as DioError;
+      var dioError = error as DioError;
       switch (dioError.type) {
         case DioErrorType.CANCEL:
           errorDescription = exception_dio_cancle;
           if (statusCode == 400) {
             errorDescription = customMessageError ?? exception_dio_400;
             try {
-              Map errorMap = jsonDecode(dioError.response.data);
+              Map<String, dynamic> errorMap = jsonDecode(dioError.response.data);
               var errorCode = ErrorCommon.fromJson(errorMap).errorKey;
 
               switch (errorCode) {

lib/data/api/rest_client.g.dart

 class _RestClient implements RestClient {
   _RestClient(this._dio, {this.baseUrl}) {
     ArgumentError.checkNotNull(_dio, '_dio');
-    this.baseUrl ??= 'https://tpf.aztrace.vn';
+    baseUrl ??= 'https://smf.presshome.vn/';
   }
 
   final Dio _dio;
 
-  String baseUrl;
+  String? baseUrl;
 
   @override
   login(userRequest) async {
     final queryParameters = <String, dynamic>{};
     final _data = <String, dynamic>{};
     _data.addAll(userRequest?.toJson() ?? <String, dynamic>{});
-    final Response<Map<String, dynamic>> _result = await _dio.request(
-        '/api/authenticate',
+    final Response<Map<String, dynamic>> _result = await _dio.request('/api/authenticate',
         queryParameters: queryParameters,
-        options: RequestOptions(
-            method: 'POST',
-            headers: <String, dynamic>{},
-            extra: _extra,
-            baseUrl: baseUrl),
+        options: RequestOptions(method: 'POST', headers: <String, dynamic>{}, extra: _extra, baseUrl: baseUrl),
         data: _data);
     final value = User.fromJson(_result.data);
     return value;
     const _extra = <String, dynamic>{};
     final queryParameters = <String, dynamic>{};
     final _data = <String, dynamic>{};
-    final Response<Map<String, dynamic>> _result = await _dio.request(
-        '/api/account',
+    final Response<Map<String, dynamic>> _result = await _dio.request('/api/account',
         queryParameters: queryParameters,
-        options: RequestOptions(
-            method: 'GET',
-            headers: <String, dynamic>{},
-            extra: _extra,
-            baseUrl: baseUrl),
+        options: RequestOptions(method: 'GET', headers: <String, dynamic>{}, extra: _extra, baseUrl: baseUrl),
         data: _data);
     final value = Account.fromJson(_result.data);
     return value;
     final _data = email;
     await _dio.request<void>('/api/account/reset-password/init',
         queryParameters: queryParameters,
-        options: RequestOptions(
-            method: 'POST',
-            headers: <String, dynamic>{},
-            extra: _extra,
-            baseUrl: baseUrl),
+        options: RequestOptions(method: 'POST', headers: <String, dynamic>{}, extra: _extra, baseUrl: baseUrl),
         data: _data);
     return null;
   }
     _data.addAll(password?.toJson() ?? <String, dynamic>{});
     await _dio.request<void>('/api/account/reset-password/finish',
         queryParameters: queryParameters,
-        options: RequestOptions(
-            method: 'POST',
-            headers: <String, dynamic>{},
-            extra: _extra,
-            baseUrl: baseUrl),
+        options: RequestOptions(method: 'POST', headers: <String, dynamic>{}, extra: _extra, baseUrl: baseUrl),
         data: _data);
     return null;
   }
     _data.addAll(password?.toJson() ?? <String, dynamic>{});
     await _dio.request<void>('/api/account/change-password',
         queryParameters: queryParameters,
-        options: RequestOptions(
-            method: 'POST',
-            headers: <String, dynamic>{},
-            extra: _extra,
-            baseUrl: baseUrl),
+        options: RequestOptions(method: 'POST', headers: <String, dynamic>{}, extra: _extra, baseUrl: baseUrl),
         data: _data);
     return null;
   }
     final queryParameters = <String, dynamic>{};
     final _data = <String, dynamic>{};
     _data.addAll(account?.toJson() ?? <String, dynamic>{});
-    final Response<Map<String, dynamic>> _result = await _dio.request(
-        '/api/update-my-profile',
+    final Response<Map<String, dynamic>> _result = await _dio.request('/api/update-my-profile',
         queryParameters: queryParameters,
-        options: RequestOptions(
-            method: 'PUT',
-            headers: <String, dynamic>{},
-            extra: _extra,
-            baseUrl: baseUrl),
+        options: RequestOptions(method: 'PUT', headers: <String, dynamic>{}, extra: _extra, baseUrl: baseUrl),
         data: _data);
     final value = Account.fromJson(_result.data);
     return value;
   }
 
   @override
-  getSupplies(type, {options, query = ""}) async {
+  getSupplies(type, {Options? options, query = ""}) async {
     ArgumentError.checkNotNull(type, 'type');
     const _extra = <String, dynamic>{};
     final queryParameters = <String, dynamic>{};
     queryParameters.removeWhere((k, v) => v == null);
     final _data = <String, dynamic>{};
-    final newOptions = newRequestOptions(options);
+    final newOptions = newRequestOptions(options ?? Options());
     newOptions.extra.addAll(_extra);
     newOptions.headers.addAll(<String, dynamic>{});
-    final Response<List<dynamic>> _result = await _dio.request(
-        '/api/list-supplies-in-warehouses/$type?q=$query',
-        queryParameters: queryParameters,
-        options: newOptions.merge(method: 'GET', baseUrl: baseUrl),
-        data: _data);
-    var value = _result.data
-        .map((dynamic i) => Supply.fromJson(i as Map<String, dynamic>))
-        .toList();
+    final Response<List<dynamic>> _result = await _dio.request('/api/list-supplies-in-warehouses/$type?q=$query',
+        queryParameters: queryParameters, options: newOptions.merge(method: 'GET', baseUrl: baseUrl), data: _data);
+    var value = _result.data.map((dynamic i) => Supply.fromJson(i as Map<String, dynamic>)).toList();
     return value;
   }
 
     final _data = token;
     await _dio.request<void>('/api/update-fcmToken',
         queryParameters: queryParameters,
-        options: RequestOptions(
-            method: 'PUT',
-            headers: <String, dynamic>{},
-            extra: _extra,
-            baseUrl: baseUrl),
+        options: RequestOptions(method: 'PUT', headers: <String, dynamic>{}, extra: _extra, baseUrl: baseUrl),
         data: _data);
     return null;
   }
     final _data = token;
     await _dio.request<void>('/api/delete-fcmToken',
         queryParameters: queryParameters,
-        options: RequestOptions(
-            method: 'PUT',
-            headers: <String, dynamic>{},
-            extra: _extra,
-            baseUrl: baseUrl),
+        options: RequestOptions(method: 'PUT', headers: <String, dynamic>{}, extra: _extra, baseUrl: baseUrl),
         data: _data);
     return null;
   }
     final queryParameters = <String, dynamic>{};
     queryParameters.removeWhere((k, v) => v == null);
     final _data = <String, dynamic>{};
-    final Response<List<dynamic>> _result = await _dio.request(
-        '/api/_search/tb-crops?page=$page&size=$size&sort=id,asc&query=$query',
+    final Response<List<dynamic>> _result = await _dio.request('/api/_search/tb-crops?page=$page&size=$size&sort=id,asc&query=$query',
         queryParameters: queryParameters,
-        options: RequestOptions(
-            method: 'GET',
-            headers: <String, dynamic>{},
-            extra: _extra,
-            baseUrl: baseUrl),
+        options: RequestOptions(method: 'GET', headers: <String, dynamic>{}, extra: _extra, baseUrl: baseUrl),
         data: _data);
-    var value = _result.data
-        .map((dynamic i) => Crop.fromJson(i as Map<String, dynamic>))
-        .toList();
+    var value = _result.data.map((dynamic i) => Crop.fromJson(i as Map<String, dynamic>)).toList();
     return value;
   }
 
   @override
-  getActionTypes({options}) async {
+  getActionTypes({Options? options}) async {
     const _extra = <String, dynamic>{};
     final queryParameters = <String, dynamic>{};
     queryParameters.removeWhere((k, v) => v == null);
     final _data = <String, dynamic>{};
-    final newOptions = newRequestOptions(options);
+    final newOptions = newRequestOptions(options ?? Options());
     newOptions.extra.addAll(_extra);
     newOptions.headers.addAll(<String, dynamic>{});
-    final Response<List<dynamic>> _result = await _dio.request(
-        '/api/listActivityTypesOther',
-        queryParameters: queryParameters,
-        options: newOptions.merge(method: 'GET', baseUrl: baseUrl),
-        data: _data);
-    var value = _result.data
-        .map((dynamic i) => ActionType.fromJson(i as Map<String, dynamic>))
-        .toList();
+    final Response<List<dynamic>> _result = await _dio.request('/api/listActivityTypesOther',
+        queryParameters: queryParameters, options: newOptions.merge(method: 'GET', baseUrl: baseUrl), data: _data);
+    var value = _result.data.map((dynamic i) => ActionType.fromJson(i as Map<String, dynamic>)).toList();
     return value;
   }
 
   @override
-  getWaterTypes({options}) async {
+  getWaterTypes({Options? options}) async {
     const _extra = <String, dynamic>{};
     final queryParameters = <String, dynamic>{};
     queryParameters.removeWhere((k, v) => v == null);
     final _data = <String, dynamic>{};
-    final newOptions = newRequestOptions(options);
+    final newOptions = newRequestOptions(options ?? Options());
     newOptions.extra.addAll(_extra);
     newOptions.headers.addAll(<String, dynamic>{});
-    final Response<List<dynamic>> _result = await _dio.request(
-        '/api/water-types',
-        queryParameters: queryParameters,
-        options: newOptions.merge(method: 'GET', baseUrl: baseUrl),
-        data: _data);
-    var value = _result.data
-        .map((dynamic i) => WaterType.fromJson(i as Map<String, dynamic>))
-        .toList();
+    final Response<List<dynamic>> _result = await _dio.request('/api/water-types',
+        queryParameters: queryParameters, options: newOptions.merge(method: 'GET', baseUrl: baseUrl), data: _data);
+    var value = _result.data.map((dynamic i) => WaterType.fromJson(i as Map<String, dynamic>)).toList();
     return value;
   }
 
   @override
-  getHarvests({options}) async {
+  getHarvests({Options? options}) async {
     const _extra = <String, dynamic>{};
     final queryParameters = <String, dynamic>{};
     queryParameters.removeWhere((k, v) => v == null);
     final _data = <String, dynamic>{};
-    final newOptions = newRequestOptions(options);
+    final newOptions = newRequestOptions(options ?? Options());
     newOptions.extra.addAll(_extra);
     newOptions.headers.addAll(<String, dynamic>{});
-    final Response<List<dynamic>> _result = await _dio.request(
-        '/api/tb-harvests',
-        queryParameters: queryParameters,
-        options: newOptions.merge(method: 'GET', baseUrl: baseUrl),
-        data: _data);
-    var value = _result.data
-        .map((dynamic i) => Harvest.fromJson(i as Map<String, dynamic>))
-        .toList();
+    final Response<List<dynamic>> _result = await _dio.request('/api/tb-harvests',
+        queryParameters: queryParameters, options: newOptions.merge(method: 'GET', baseUrl: baseUrl), data: _data);
+    var value = _result.data.map((dynamic i) => Harvest.fromJson(i as Map<String, dynamic>)).toList();
     return value;
   }
 
   @override
-  getDeviceForActivity({options}) async {
+  getDeviceForActivity({Options? options}) async {
     const _extra = <String, dynamic>{};
     final queryParameters = <String, dynamic>{};
     queryParameters.removeWhere((k, v) => v == null);
     final _data = <String, dynamic>{};
-    final newOptions = newRequestOptions(options);
+    final newOptions = newRequestOptions(options ?? Options());
     newOptions.extra.addAll(_extra);
     newOptions.headers.addAll(<String, dynamic>{});
-    final Response<List<dynamic>> _result = await _dio.request(
-        '/api/listDeviceForActivity',
-        queryParameters: queryParameters,
-        options: newOptions.merge(method: 'GET', baseUrl: baseUrl),
-        data: _data);
-    var value = _result.data
-        .map((dynamic i) => Device.fromJson(i as Map<String, dynamic>))
-        .toList();
+    final Response<List<dynamic>> _result = await _dio.request('/api/listDeviceForActivity',
+        queryParameters: queryParameters, options: newOptions.merge(method: 'GET', baseUrl: baseUrl), data: _data);
+    var value = _result.data.map((dynamic i) => Device.fromJson(i as Map<String, dynamic>)).toList();
     return value;
   }
 
     final _data = status;
     await _dio.request<void>('/api/notifications/update-all',
         queryParameters: queryParameters,
-        options: RequestOptions(
-            method: 'PUT',
-            headers: <String, dynamic>{},
-            extra: _extra,
-            baseUrl: baseUrl),
+        options: RequestOptions(method: 'PUT', headers: <String, dynamic>{}, extra: _extra, baseUrl: baseUrl),
         data: _data);
     return null;
   }
     _data.addAll(updateNoti?.toJson() ?? <String, dynamic>{});
     await _dio.request<void>('/api/notifications/update',
         queryParameters: queryParameters,
-        options: RequestOptions(
-            method: 'PUT',
-            headers: <String, dynamic>{},
-            extra: _extra,
-            baseUrl: baseUrl),
+        options: RequestOptions(method: 'PUT', headers: <String, dynamic>{}, extra: _extra, baseUrl: baseUrl),
         data: _data);
     return null;
   }
 
   @override
-  getCountries({page = 0, size = 400, query = '', options}) async {
+  getCountries({page = 0, size = 400, query = '', Options? options}) async {
     const _extra = <String, dynamic>{};
     final queryParameters = <String, dynamic>{};
     queryParameters.removeWhere((k, v) => v == null);
     final _data = <String, dynamic>{};
-    final newOptions = newRequestOptions(options);
+    final newOptions = newRequestOptions(options ?? Options());
     newOptions.extra.addAll(_extra);
     newOptions.headers.addAll(<String, dynamic>{});
-    final Response<List<dynamic>> _result = await _dio.request(
-        '/api/tb-countries?page=$page&size=$size&query=$query&&sort=name,ASC',
-        queryParameters: queryParameters,
-        options: newOptions.merge(method: 'GET', baseUrl: baseUrl),
-        data: _data);
-    var value = _result.data
-        .map((dynamic i) => LocationUnit.fromJson(i as Map<String, dynamic>))
-        .toList();
+    final Response<List<dynamic>> _result = await _dio.request('/api/tb-countries?page=$page&size=$size&query=$query&&sort=name,ASC',
+        queryParameters: queryParameters, options: newOptions.merge(method: 'GET', baseUrl: baseUrl), data: _data);
+    var value = _result.data.map((dynamic i) => LocationUnit.fromJson(i as Map<String, dynamic>)).toList();
     return value;
   }
 
   @override
-  getProvinces(countryId, {page = 0, size = 20, query = '', options}) async {
+  getProvinces(countryId, {page = 0, size = 20, query = '', Options? options}) async {
     ArgumentError.checkNotNull(countryId, 'countryId');
     const _extra = <String, dynamic>{};
     final queryParameters = <String, dynamic>{};
     queryParameters.removeWhere((k, v) => v == null);
     final _data = <String, dynamic>{};
-    final newOptions = newRequestOptions(options);
+    final newOptions = newRequestOptions(options ?? Options());
     newOptions.extra.addAll(_extra);
     newOptions.headers.addAll(<String, dynamic>{});
     final Response<List<dynamic>> _result = await _dio.request(
         queryParameters: queryParameters,
         options: newOptions.merge(method: 'GET', baseUrl: baseUrl),
         data: _data);
-    var value = _result.data
-        .map((dynamic i) => LocationUnit.fromJson(i as Map<String, dynamic>))
-        .toList();
+    var value = _result.data.map((dynamic i) => LocationUnit.fromJson(i as Map<String, dynamic>)).toList();
     return value;
   }
 
   @override
-  getDistricts(provinceId, {page = 0, size = 20, query = '', options}) async {
+  getDistricts(provinceId, {page = 0, size = 20, query = '', Options? options}) async {
     ArgumentError.checkNotNull(provinceId, 'provinceId');
     const _extra = <String, dynamic>{};
     final queryParameters = <String, dynamic>{};
     queryParameters.removeWhere((k, v) => v == null);
     final _data = <String, dynamic>{};
-    final newOptions = newRequestOptions(options);
+    final newOptions = newRequestOptions(options ?? Options());
     newOptions.extra.addAll(_extra);
     newOptions.headers.addAll(<String, dynamic>{});
     final Response<List<dynamic>> _result = await _dio.request(
         queryParameters: queryParameters,
         options: newOptions.merge(method: 'GET', baseUrl: baseUrl),
         data: _data);
-    var value = _result.data
-        .map((dynamic i) => LocationUnit.fromJson(i as Map<String, dynamic>))
-        .toList();
+    var value = _result.data.map((dynamic i) => LocationUnit.fromJson(i as Map<String, dynamic>)).toList();
     return value;
   }
 
   @override
-  getWards(districtId, {page = 0, size = 20, query = '', options}) async {
+  getWards(districtId, {page = 0, size = 20, query = '', Options? options}) async {
     ArgumentError.checkNotNull(districtId, 'districtId');
     const _extra = <String, dynamic>{};
     final queryParameters = <String, dynamic>{};
     queryParameters.removeWhere((k, v) => v == null);
     final _data = <String, dynamic>{};
-    final newOptions = newRequestOptions(options);
+    final newOptions = newRequestOptions(options ?? Options());
     newOptions.extra.addAll(_extra);
     newOptions.headers.addAll(<String, dynamic>{});
     final Response<List<dynamic>> _result = await _dio.request(
         queryParameters: queryParameters,
         options: newOptions.merge(method: 'GET', baseUrl: baseUrl),
         data: _data);
-    var value = _result.data
-        .map((dynamic i) => LocationUnit.fromJson(i as Map<String, dynamic>))
-        .toList();
+    var value = _result.data.map((dynamic i) => LocationUnit.fromJson(i as Map<String, dynamic>)).toList();
     return value;
   }
 
     final Response<Map<String, dynamic>> _result = await _dio.request(
         '/api/tb-crops-detail-for-app/$cropId?page=$page&size=$size&sort=executeDate,DESC',
         queryParameters: queryParameters,
-        options: RequestOptions(
-            method: 'GET',
-            headers: <String, dynamic>{},
-            extra: _extra,
-            baseUrl: baseUrl),
+        options: RequestOptions(method: 'GET', headers: <String, dynamic>{}, extra: _extra, baseUrl: baseUrl),
         data: _data);
     final value = CropPlot.fromJson(_result.data);
     return value;
     final Response<Map<String, dynamic>> _result = await _dio.request(
         '/api/tb-crops-scan-qrCode/$cropCode?page=$page&size=$size&sort=executeDate,DESC',
         queryParameters: queryParameters,
-        options: RequestOptions(
-            method: 'GET',
-            headers: <String, dynamic>{},
-            extra: _extra,
-            baseUrl: baseUrl),
+        options: RequestOptions(method: 'GET', headers: <String, dynamic>{}, extra: _extra, baseUrl: baseUrl),
         data: _data);
     final value = CropPlot.fromJson(_result.data);
     return value;
     _data.addAll(crop?.toJson() ?? <String, dynamic>{});
     await _dio.request<void>('/api/tb-crops',
         queryParameters: queryParameters,
-        options: RequestOptions(
-            method: 'PUT',
-            headers: <String, dynamic>{},
-            extra: _extra,
-            baseUrl: baseUrl),
+        options: RequestOptions(method: 'PUT', headers: <String, dynamic>{}, extra: _extra, baseUrl: baseUrl),
         data: _data);
     return null;
   }
 
   @override
-  getDevices({query}) async {
+  getDevices({String? query}) async {
     const _extra = <String, dynamic>{};
     final queryParameters = <String, dynamic>{};
     final _data = <String, dynamic>{};
-    final Response<List<dynamic>> _result = await _dio.request(
-        '/api/listDeviceOfUserCustomers?query=$query',
+    final Response<List<dynamic>> _result = await _dio.request('/api/listDeviceOfUserCustomers?query=$query',
         queryParameters: queryParameters,
-        options: RequestOptions(
-            method: 'GET',
-            headers: <String, dynamic>{},
-            extra: _extra,
-            baseUrl: baseUrl),
+        options: RequestOptions(method: 'GET', headers: <String, dynamic>{}, extra: _extra, baseUrl: baseUrl),
         data: _data);
-    var value = _result.data
-        .map((dynamic i) => Device.fromJson(i as Map<String, dynamic>))
-        .toList();
+    var value = _result.data.map((dynamic i) => Device.fromJson(i as Map<String, dynamic>)).toList();
     return value;
   }
 
     final queryParameters = <String, dynamic>{};
     queryParameters.removeWhere((k, v) => v == null);
     final _data = <String, dynamic>{};
-    final Response<List<dynamic>> _result = await _dio.request(
-        '/api/list-environment-updates-display/$cropId?page=$page&size=$size',
+    final Response<List<dynamic>> _result = await _dio.request('/api/list-environment-updates-display/$cropId?page=$page&size=$size',
         queryParameters: queryParameters,
-        options: RequestOptions(
-            method: 'GET',
-            headers: <String, dynamic>{},
-            extra: _extra,
-            baseUrl: baseUrl),
+        options: RequestOptions(method: 'GET', headers: <String, dynamic>{}, extra: _extra, baseUrl: baseUrl),
         data: _data);
-    var value = _result.data
-        .map((dynamic i) =>
-            EnvironmentParameter.fromJson(i as Map<String, dynamic>))
-        .toList();
+    var value = _result.data.map((dynamic i) => EnvironmentParameter.fromJson(i as Map<String, dynamic>)).toList();
     return value;
   }
 

lib/data/repository/authentication_repository.dart

     try {
       var token = await pref.getString(DATA_CONST.TOKEN_KEY);
       var expiredTime = await pref.getString(DATA_CONST.EXPIRED_TIME);
-      int currentTime = DateTime.now().millisecondsSinceEpoch;
-      bool isNotExpired =
-          (currentTime - int.tryParse(expiredTime)) < ConstCommon.kExpiredTime;
+      var currentTime = DateTime.now().millisecondsSinceEpoch;
+      var isNotExpired = (currentTime - (int.tryParse(expiredTime) ?? 0)) < ConstCommon.kExpiredTime;
 
       if (token.isNotEmpty && isNotExpired) {
         yield AuthenticationStatus.authenticated;
 
   Future<User> signInWithCredentials(String username, String password) {
     final client = RestClient(dio);
-    var result =
-        client.login(UserRequest(username: username, password: password));
+    var result = client.login(UserRequest(username: username, password: password));
     return result;
   }
 

lib/data/repository/repository.dart

 
   Future<List<ActionType>> getActionTypes() {
     final client = RestClient(dio);
-    var op = buildConfigurableCacheOptions(
-        forceRefresh: true, maxAge: Duration(days: ConstCommon.kMaxAgeCache));
+    var op = buildConfigurableCacheOptions(forceRefresh: true, maxAge: Duration(days: ConstCommon.kMaxAgeCache));
     return client.getActionTypes(options: op);
   }
 
   Future<List<Harvest>> getHarvests() {
     final client = RestClient(dio);
-    var op = buildConfigurableCacheOptions(
-        forceRefresh: true, maxAge: Duration(days: ConstCommon.kMaxAgeCache));
+    var op = buildConfigurableCacheOptions(forceRefresh: true, maxAge: Duration(days: ConstCommon.kMaxAgeCache));
     return client.getHarvests(options: op);
   }
 
   Future<List<WaterType>> getWaterTypes() {
     final client = RestClient(dio);
-    var op = buildConfigurableCacheOptions(
-        forceRefresh: true, maxAge: Duration(days: ConstCommon.kMaxAgeCache));
+    var op = buildConfigurableCacheOptions(forceRefresh: true, maxAge: Duration(days: ConstCommon.kMaxAgeCache));
     return client.getWaterTypes(options: op);
   }
 
-  Future<CropPlot> getPlotDetail(int cropId, {int page, int size}) {
+  Future<CropPlot> getPlotDetail(int cropId, {int page = 0, int size = 20}) {
     final client = RestClient(dio);
     return client.getCropDetail(cropId, page: page, size: size);
   }
 
-  Future<CropPlot> getPlotDetailByCode(String cropCode, {int page, int size}) {
+  Future<CropPlot> getPlotDetailByCode(String cropCode, {int page = 0, int size = 20}) {
     final client = RestClient(dio);
     return client.getCropDetailByCode(cropCode, page: page, size: size);
   }
 
-  Future<List<Crop>> getPlots({int page, int size, String searchString}) {
+  Future<List<Crop>> getPlots({int page = 0, int size = 20, String searchString = ''}) {
     final client = RestClient(dio);
     return client.getPlots(page: page, size: size, query: searchString);
   }
     return client.login(UserRequest(username: username, password: password));
   }
 
-  Future<PagedResult<T>> getInfinityList<T>(String url,
-      {int page = 0, int size = 20}) async {
+  Future<PagedResult<T>> getInfinityList<T>(String url, {int page = 0, int size = 20}) async {
     var initUrl = "/api/activities/latest-env-by-activity-type/1/2";
-    var url =
-        ConstCommon.baseUrl + initUrl + "?page=$page&paged=true&size=$size";
+    var url = ConstCommon.baseUrl + initUrl + "?page=$page&paged=true&size=$size";
     var response = await dio.get(url);
 
     final value = PagedResult<T>.fromJson(response.data, getInstanceClass());
 
   Future<List<Supply>> getSupplies(String type, {String query = ""}) async {
     final client = RestClient(dio);
-    var op = buildConfigurableCacheOptions(
-        forceRefresh: true, maxAge: Duration(days: ConstCommon.kMaxAgeCache));
+    var op = buildConfigurableCacheOptions(forceRefresh: true, maxAge: Duration(days: ConstCommon.kMaxAgeCache));
     return client.getSupplies(type, query: query, options: op);
   }
 
   Future<List<Device>> getDeviceForActivity() async {
     final client = RestClient(dio);
-    var op = buildConfigurableCacheOptions(
-        forceRefresh: true, maxAge: Duration(days: ConstCommon.kMaxAgeCache));
+    var op = buildConfigurableCacheOptions(forceRefresh: true, maxAge: Duration(days: ConstCommon.kMaxAgeCache));
     return client.getDeviceForActivity(options: op);
   }
 
     return client.updateNoti(updateNoti);
   }
 
-  Future<NotificationObjectDTO> getNotifications(
-      {int page = 0, int size = 20}) async {
-    var url = ConstCommon.baseUrl +
-        "/api/notifications-current-user?page=$page&size=$size&sort=sendDate,DESC";
+  Future<NotificationObjectDTO> getNotifications({int page = 0, int size = 20}) async {
+    var url = ConstCommon.baseUrl + "/api/notifications-current-user?page=$page&size=$size&sort=sendDate,DESC";
     var response = await dio.get(url);
 
     final value = NotificationObjectDTO.fromJson(response.data);
   }
 
   Future<List<LocationUnit>> getLocationUnits(
-      {@required LocationType locationType,
-      int filterId,
-      int page = 0,
-      int size = 500,
-      String query = ''}) {
+      {required LocationType locationType, required int filterId, int page = 0, int size = 500, String query = ''}) {
     final client = RestClient(dio);
-    var op = buildConfigurableCacheOptions(
-        forceRefresh: true, maxAge: Duration(days: ConstCommon.kMaxAgeCache));
+    var op = buildConfigurableCacheOptions(forceRefresh: true, maxAge: Duration(days: ConstCommon.kMaxAgeCache));
     var response;
     switch (locationType) {
       case LocationType.province:
-        response = client.getProvinces(filterId,
-            options: op, page: page, size: size, query: query);
+        response = client.getProvinces(filterId, options: op, page: page, size: size, query: query);
         break;
       case LocationType.district:
-        response = client.getDistricts(filterId,
-            options: op, page: page, size: size, query: query);
+        response = client.getDistricts(filterId, options: op, page: page, size: size, query: query);
         break;
       case LocationType.ward:
-        response = client.getWards(filterId,
-            options: op, page: page, size: size, query: query);
+        response = client.getWards(filterId, options: op, page: page, size: size, query: query);
         break;
       default:
         response = client.getCountries(query: query);
   Object getInstanceClass() {
     var instanceClass;
     if (1 == 1) {
-      instanceClass = new Crop();
+      instanceClass = Crop();
     }
     return instanceClass;
   }
 
   //Action
-  Future<void> createAction(
-      Function(dynamic) onSuccess, Function(dynamic) onError,
-      {String apiAddAction,
-      String paramActivity,
-      String activityAction,
-      List<String> filePaths}) async {
+  Future<void> createAction(Function(dynamic) onSuccess, Function(dynamic) onError,
+      {required String apiAddAction, required String paramActivity, required String activityAction, required List<String> filePaths}) async {
     var formData = FormData();
     filePaths.forEach((f) {
       formData.files.add(MapEntry("images", MultipartFile.fromFileSync(f)));
     });
     formData.fields.add(MapEntry(paramActivity, activityAction));
     try {
-      await dio
-          .post("${ConstCommon.baseUrl}/$apiAddAction", data: formData)
-          .then((value) {
+      await dio.post("${ConstCommon.baseUrl}/$apiAddAction", data: formData).then((value) {
         onSuccess(value.data);
       });
     } on DioError catch (e) {
     }
   }
 
-  Future<void> updateAction(
-      Function(dynamic) onSuccess, Function(dynamic) onError,
-      {String apiUpdateAction,
-      String paramActivity,
-      String activityAction,
-      List<String> filePaths}) async {
+  Future<void> updateAction(Function(dynamic) onSuccess, Function(dynamic) onError,
+      {required String apiUpdateAction, required String paramActivity, required String activityAction, required List<String> filePaths}) async {
     var formData = FormData();
     filePaths.forEach((f) {
       formData.files.add(MapEntry("images", MultipartFile.fromFileSync(f)));
     });
     formData.fields.add(MapEntry(paramActivity, activityAction));
     try {
-      await dio
-          .post("${ConstCommon.baseUrl}/$apiUpdateAction", data: formData)
-          .then((value) {
+      await dio.post("${ConstCommon.baseUrl}/$apiUpdateAction", data: formData).then((value) {
         onSuccess(value.data);
       });
     } on DioError catch (e) {
   }
 
   //Environment Parameter
-  Future<List<EnvironmentParameter>> getEnvironmentParameters(
-      {@required int cropId, int page, int size}) {
+  Future<List<EnvironmentParameter>> getEnvironmentParameters({required int cropId, int page = 0, int size = 20}) {
     final client = RestClient(dio);
     return client.getEnvironmentParameters(cropId, page: page, size: size);
   }

lib/main.dart

   runApp(App(authenticationRepository: AuthenticationRepository()));
 }
 
-Future<dynamic> myBackgroundMessageHandler(Map<String, dynamic> message) {
+void myBackgroundMessageHandler(Map<String, dynamic> message) {
   if (message.containsKey('data')) {
     // Handle data message
     final dynamic data = message['data'];
   }
 }
 
-_showAlertCheckCropCode(
-    BuildContext context, String cropCode, Repository repository) async {
-  Get.defaultDialog(
-      title: "Kiểm tra thông tin lô ....",
-      middleText: "",
-      content: CircularProgressIndicator());
+_showAlertCheckCropCode(BuildContext context, String cropCode, Repository repository) async {
+  Get.defaultDialog(title: "Kiểm tra thông tin lô ....", middleText: "", content: const CircularProgressIndicator());
   try {
-    await repository
-        .getPlotDetailByCode(cropCode, page: 1, size: 1)
-        .then((value) {
+    await repository.getPlotDetailByCode(cropCode, page: 1, size: 1).then((value) {
       print("ok");
       if (Get.isDialogOpen) Get.back();
-      Get.to(PlotDetailScreen(
-          cropId: value.tbCropDTO.id,
-          cropType: value.tbCropDTO.type,
-          initialIndex: 0));
+      Get.to(PlotDetailScreen(cropId: value.tbCropDTO?.id ?? -1, cropType: value.tbCropDTO?.type ?? -1, initialIndex: 0));
     }).catchError((onError) {
       Utils.showDialog(
           title: "Không tìm thấy lô",

lib/models/ActionType.dart

-import 'package:json_annotation/json_annotation.dart';
+class ActionType {
+  int? id;
+  String? name;
+  String? description;
 
-part 'ActionType.g.dart';
+  ActionType({this.id, this.name, this.description});
 
-@JsonSerializable()
-class ActionType {
-    ActionType();
+  ActionType.fromJson(Map<String, dynamic> json) {
+    id = json['id'];
+    name = json['name'];
+    description = json['description'];
+  }
 
-    num id;
-    String name;
-    String description;
-    
-    factory ActionType.fromJson(Map<String,dynamic> json) => _$ActionTypeFromJson(json);
-    Map<String, dynamic> toJson() => _$ActionTypeToJson(this);
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = new Map<String, dynamic>();
+    data['id'] = this.id;
+    data['name'] = this.name;
+    data['description'] = this.description;
+    return data;
+  }
 }

lib/models/ActionType.g.dart

-// GENERATED CODE - DO NOT MODIFY BY HAND
-
-part of 'ActionType.dart';
-
-// **************************************************************************
-// JsonSerializableGenerator
-// **************************************************************************
-
-ActionType _$ActionTypeFromJson(Map<String, dynamic> json) {
-  return ActionType()
-    ..id = json['id'] as num
-    ..name = json['name'] as String
-    ..description = json['description'] as String;
-}
-
-Map<String, dynamic> _$ActionTypeToJson(ActionType instance) =>
-    <String, dynamic>{
-      'id': instance.id,
-      'name': instance.name,
-      'description': instance.description,
-    };

lib/models/Crop.dart

-import 'package:json_annotation/json_annotation.dart';
+class Crop {
+  num? id;
+  String? qrCode;
+  String? code;
+  double? areaM2;
+  num? type;
+  String? startDate;
+  String? endDate;
+  String? status;
+  String? description;
+  num? ageDayStartAt;
+  num? tbSuppliesId;
+  String? suppliesName;
+  num? tbGuidelineId;
+  num? netHouseId;
+  String? netHouseName;
+  num? areaId;
+  String? area;
 
-part 'Crop.g.dart';
+  Crop(
+      {this.id,
+      this.qrCode,
+      this.code,
+      this.areaM2,
+      this.type,
+      this.startDate,
+      this.endDate,
+      this.status,
+      this.description,
+      this.ageDayStartAt,
+      this.tbSuppliesId,
+      this.suppliesName,
+      this.tbGuidelineId,
+      this.netHouseId,
+      this.netHouseName,
+      this.areaId,
+      this.area});
 
-@JsonSerializable()
-class Crop {
-    Crop();
+  Crop.fromJson(Map<String, dynamic> json) {
+    id = json['id'];
+    qrCode = json['qrCode'];
+    code = json['code'];
+    areaM2 = json['areaM2'];
+    type = json['type'];
+    startDate = json['startDate'];
+    endDate = json['endDate'];
+    status = json['status'];
+    description = json['description'];
+    ageDayStartAt = json['ageDayStartAt'];
+    tbSuppliesId = json['tbSuppliesId'];
+    suppliesName = json['suppliesName'];
+    tbGuidelineId = json['tbGuidelineId'];
+    netHouseId = json['netHouseId'];
+    netHouseName = json['netHouseName'];
+    areaId = json['areaId'];
+    area = json['area'];
+  }
 
-    num id;
-    String qrCode;
-    String code;
-    num areaM2;
-    num type;
-    String startDate;
-    String endDate;
-    String status;
-    String description;
-    num ageDayStartAt;
-    num tbSuppliesId;
-    String suppliesName;
-    num tbGuidelineId;
-    num netHouseId;
-    String netHouseName;
-    num areaId;
-    String area;
-    
-    factory Crop.fromJson(Map<String,dynamic> json) => _$CropFromJson(json);
-    Map<String, dynamic> toJson() => _$CropToJson(this);
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = new Map<String, dynamic>();
+    data['id'] = this.id;
+    data['qrCode'] = this.qrCode;
+    data['code'] = this.code;
+    data['areaM2'] = this.areaM2;
+    data['type'] = this.type;
+    data['startDate'] = this.startDate;
+    data['endDate'] = this.endDate;
+    data['status'] = this.status;
+    data['description'] = this.description;
+    data['ageDayStartAt'] = this.ageDayStartAt;
+    data['tbSuppliesId'] = this.tbSuppliesId;
+    data['suppliesName'] = this.suppliesName;
+    data['tbGuidelineId'] = this.tbGuidelineId;
+    data['netHouseId'] = this.netHouseId;
+    data['netHouseName'] = this.netHouseName;
+    data['areaId'] = this.areaId;
+    data['area'] = this.area;
+    return data;
+  }
 }

lib/models/Crop.g.dart

-// GENERATED CODE - DO NOT MODIFY BY HAND
-
-part of 'Crop.dart';
-
-// **************************************************************************
-// JsonSerializableGenerator
-// **************************************************************************
-
-Crop _$CropFromJson(Map<String, dynamic> json) {
-  return Crop()
-    ..id = json['id'] as num
-    ..qrCode = json['qrCode'] as String
-    ..code = json['code'] as String
-    ..areaM2 = json['areaM2'] as num
-    ..type = json['type'] as num
-    ..startDate = json['startDate'] as String
-    ..endDate = json['endDate'] as String
-    ..status = json['status'] as String
-    ..description = json['description'] as String
-    ..ageDayStartAt = json['ageDayStartAt'] as num
-    ..tbSuppliesId = json['tbSuppliesId'] as num
-    ..suppliesName = json['suppliesName'] as String
-    ..tbGuidelineId = json['tbGuidelineId'] as num
-    ..netHouseId = json['netHouseId'] as num
-    ..netHouseName = json['netHouseName'] as String
-    ..areaId = json['areaId'] as num
-    ..area = json['area'] as String;
-}
-
-Map<String, dynamic> _$CropToJson(Crop instance) => <String, dynamic>{
-      'id': instance.id,
-      'qrCode': instance.qrCode,
-      'code': instance.code,
-      'areaM2': instance.areaM2,
-      'type': instance.type,
-      'startDate': instance.startDate,
-      'endDate': instance.endDate,
-      'status': instance.status,
-      'description': instance.description,
-      'ageDayStartAt': instance.ageDayStartAt,
-      'tbSuppliesId': instance.tbSuppliesId,
-      'suppliesName': instance.suppliesName,
-      'tbGuidelineId': instance.tbGuidelineId,
-      'netHouseId': instance.netHouseId,
-      'netHouseName': instance.netHouseName,
-      'areaId': instance.areaId,
-      'area': instance.area,
-    };

lib/models/PagedResult.dart

 class PagedResult<T> {
-  final int totalElements;
+  final int? totalElements;
   final List<T> results;
 
-  PagedResult({this.totalElements, this.results});
+  PagedResult({this.totalElements, required this.results});
 
   factory PagedResult.fromJson(Map<String, dynamic> json, object) {
     final items = json['content'].cast<Map<String, dynamic>>();
     final listItems =
-        new List<T>.from(items.map((itemsJson) => object.fromJson(itemsJson)));
+        List<T>.from(items.map((itemsJson) => object.fromJson(itemsJson)));
     final total = json['totalElements'] as num;
-    return PagedResult<T>(totalElements: total, results: listItems);
+    return PagedResult<T>(totalElements: total.toInt(), results: listItems);
   }
 }

lib/models/ResourceHelper.dart

-import 'package:json_annotation/json_annotation.dart';
+class ResourceHelper {
+  int? id;
+  String? name;
+  String? description;
+  bool? isSelected;
 
-part 'ResourceHelper.g.dart';
+  ResourceHelper({this.id, this.name, this.description, this.isSelected});
 
-@JsonSerializable()
-class ResourceHelper {
-    ResourceHelper();
+  ResourceHelper.fromJson(Map<String, dynamic> json) {
+    id = json['id'];
+    name = json['name'];
+    description = json['description'];
+    isSelected = json['isSelected'];
+  }
 
-    num id;
-    String name;
-    String description;
-    bool isSelected;
-    
-    factory ResourceHelper.fromJson(Map<String,dynamic> json) => _$ResourceHelperFromJson(json);
-    Map<String, dynamic> toJson() => _$ResourceHelperToJson(this);
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = new Map<String, dynamic>();
+    data['id'] = this.id;
+    data['name'] = this.name;
+    data['description'] = this.description;
+    data['isSelected'] = this.isSelected;
+    return data;
+  }
 }

lib/models/ResourceHelper.g.dart

-// GENERATED CODE - DO NOT MODIFY BY HAND
-
-part of 'ResourceHelper.dart';
-
-// **************************************************************************
-// JsonSerializableGenerator
-// **************************************************************************
-
-ResourceHelper _$ResourceHelperFromJson(Map<String, dynamic> json) {
-  return ResourceHelper()
-    ..id = json['id'] as num
-    ..name = json['name'] as String
-    ..description = json['description'] as String
-    ..isSelected = json['isSelected'] as bool;
-}
-
-Map<String, dynamic> _$ResourceHelperToJson(ResourceHelper instance) =>
-    <String, dynamic>{
-      'id': instance.id,
-      'name': instance.name,
-      'description': instance.description,
-      'isSelected': instance.isSelected,
-    };

lib/presentation/custom_widgets/app_bar_widget.dart

 
 class AppBarWidget extends StatelessWidget implements PreferredSizeWidget {
   final bool isBack;
-  final Widget action;
+  final Widget? action;
   AppBarWidget({this.isBack = true, this.action});
   @override
   Widget build(BuildContext context) {
                     Text(
                       'Quay lại',
                       maxLines: 1,
-                      style: TextStyle(
-                          color: AppColors.YELLOW,
-                          fontWeight: FontWeight.normal),
+                      style: TextStyle(color: AppColors.YELLOW, fontWeight: FontWeight.normal),
                     ),
-                    SizedBox(width: 4),
+                    const SizedBox(width: 4),
                     Expanded(
                         child: Align(
                       alignment: Alignment.centerRight,
-                      child: action ?? SizedBox(),
+                      child: action ?? const SizedBox(),
                     ))
                   ],
                 ),
                   Get.back();
                 },
               )
-            : SizedBox(),
+            : const SizedBox(),
         automaticallyImplyLeading: false,
-        actions: [SizedBox()],
+        actions: [const SizedBox()],
       ),
     );
   }

lib/presentation/custom_widgets/bloc/media_helper_event.dart

 
 class ChangeListMedia extends MediaHelperEvent {
   final List<Media> items;
-  ChangeListMedia({@required this.items});
+  ChangeListMedia({required this.items});
 }

lib/presentation/custom_widgets/bloc/media_helper_state.dart

 
 class MediaHelperFailure extends MediaHelperState {
   final String errorString;
-  MediaHelperFailure({@required this.errorString});
+  MediaHelperFailure({required this.errorString});
 }
 
 class MediaHelperSuccess extends MediaHelperState {
   final List<Media> items;
 
-  const MediaHelperSuccess({@required this.items});
+  const MediaHelperSuccess({required this.items});
 
-  MediaHelperSuccess copyWith({List<Media> items}) {
+  MediaHelperSuccess copyWith({List<Media>? items}) {
     return MediaHelperSuccess(items: items ?? this.items);
   }
 

lib/presentation/custom_widgets/bloc/widget_row_plot_info.dart

   final Color color;
   final String name;
   final String value;
-  WidgetRowPlotInfo(
-      {@required this.color, @required this.name, @required this.value});
+  WidgetRowPlotInfo({required this.color, required this.name, required this.value});
   @override
   Widget build(BuildContext context) {
     return Container(
           children: [
             Expanded(
               child: Container(
-                padding: EdgeInsets.all(12),
+                padding: const EdgeInsets.all(12),
                 child: Text(
                   name,
-                  style: TextStyle(fontSize: 16),
+                  style: const TextStyle(fontSize: 16),
                 ),
               ),
             ),
             ),
             Expanded(
               child: Container(
-                  padding: EdgeInsets.all(12),
-                  child: Text(value ?? '--',
-                      textAlign: TextAlign.end,
-                      style: TextStyle(fontSize: 16))),
+                  padding: const EdgeInsets.all(12), child: Text(value ?? '--', textAlign: TextAlign.end, style: const TextStyle(fontSize: 16))),
             ),
           ],
         ),

lib/presentation/custom_widgets/bottom_loader.dart

   Widget build(BuildContext context) {
     return Container(
       alignment: Alignment.center,
-      child: Center(
+      child: const Center(
         child: SizedBox(
           width: 33,
           height: 33,

lib/presentation/custom_widgets/button_icon_widget.dart

 
 class ButtonIconWidget extends StatelessWidget {
   final String title;
-  final TextStyle titleStyle;
-  final String subTitle;
+  final TextStyle? titleStyle;
+  final String? subTitle;
   final Function onTap;
-  final String leadingIcon;
-  final String trailingIcon;
+  final String? leadingIcon;
+  final String? trailingIcon;
   final bool isTopBorder;
   final bool isBottomBorder;
   ButtonIconWidget(
-      {@required this.title,
-      @required this.onTap,
+      {required this.title,
+      required this.onTap,
       this.titleStyle,
       this.subTitle,
       this.leadingIcon,
     return SizedBox(
       width: double.infinity,
       child: MaterialButton(
-        padding: EdgeInsets.all(0),
-        onPressed: onTap,
+        padding: const EdgeInsets.all(0),
+        onPressed: () {
+          onTap();
+        },
         child: Container(
-          padding: EdgeInsets.all(12),
+          padding: const EdgeInsets.all(12),
           decoration: BoxDecoration(
               border: Border(
-                  top: isTopBorder
-                      ? BorderSide(color: AppColors.GRAY1, width: 0.35)
-                      : BorderSide.none,
-                  bottom: isBottomBorder
-                      ? BorderSide(color: AppColors.GRAY1, width: 0.35)
-                      : BorderSide.none)),
+                  top: isTopBorder ? BorderSide(color: AppColors.GRAY1, width: 0.35) : BorderSide.none,
+                  bottom: isBottomBorder ? BorderSide(color: AppColors.GRAY1, width: 0.35) : BorderSide.none)),
           width: double.infinity,
           child: Row(
             mainAxisSize: MainAxisSize.max,
             children: [
-              leadingIcon == null
-                  ? SizedBox()
-                  : SizedBox(
-                      width: 20,
-                      height: 20,
-                      child: SvgPicture.asset(leadingIcon)),
-              SizedBox(width: 4),
+              leadingIcon == null ? const SizedBox() : SizedBox(width: 20, height: 20, child: SvgPicture.asset(leadingIcon)),
+              const SizedBox(width: 4),
               Expanded(
                 child: Column(
                   crossAxisAlignment: CrossAxisAlignment.start,
                   children: [
                     Text(
                       title,
-                      style: titleStyle ??
-                          TextStyle(fontSize: 16, fontWeight: FontWeight.w100),
+                      style: titleStyle ?? const TextStyle(fontSize: 16, fontWeight: FontWeight.w100),
                     ),
                     subTitle == null
-                        ? SizedBox()
+                        ? const SizedBox()
                         : Text(
-                            subTitle,
-                            style: TextStyle(fontSize: 14),
+                            subTitle ?? '',
+                            style: const TextStyle(fontSize: 14),
                           )
                   ],
                 ),
               ),
-              trailingIcon == null ? SizedBox() : SvgPicture.asset(trailingIcon)
+              trailingIcon == null ? const SizedBox() : SvgPicture.asset(trailingIcon)
             ],
           ),
         ),

lib/presentation/custom_widgets/button_widget.dart

 class ButtonWidget extends StatelessWidget {
   final Function onPressed;
   final String title;
-  ButtonWidget({@required this.title, @required this.onPressed});
+  ButtonWidget({required this.title, required this.onPressed});
   @override
   Widget build(BuildContext context) {
     return SizedBox(
       width: double.infinity,
       height: 55,
       child: FlatButton(
-        onPressed: onPressed,
+        onPressed: () {
+          onPressed();
+        },
         color: AppColors.DEFAULT,
         shape: RoundedRectangleBorder(
-          borderRadius: new BorderRadius.circular(7.0),
+          borderRadius: BorderRadius.circular(7.0),
         ),
-        child: Text(title.toUpperCase(),
-            style: TextStyle(
-                fontWeight: FontWeight.bold,
-                color: AppColors.WHITE,
-                fontSize: 18)),
+        child: Text(title.toUpperCase(), style: TextStyle(fontWeight: FontWeight.bold, color: AppColors.WHITE, fontSize: 18)),
       ),
     );
   }

lib/presentation/custom_widgets/camera_helper.dart

   throw ArgumentError('Unknown lens direction');
 }
 
-void logError(String code, String message) =>
-    print('Error: $code\nError Message: $message');
-
-class _CameraHelperState extends State<CameraHelper>
-    with WidgetsBindingObserver {
-  CameraController controller;
-  String imagePath;
-  String videoPath;
-  VideoPlayerController videoController;
-  VoidCallback videoPlayerListener;
+void logError(String code, String message) => print('Error: $code\nError Message: $message');
+
+class _CameraHelperState extends State<CameraHelper> with WidgetsBindingObserver {
+  late CameraController controller;
+  String? imagePath;
+  String? videoPath;
+  VideoPlayerController? videoController;
+  VoidCallback? videoPlayerListener;
   bool enableAudio = true;
   int indexCamera = 0;
 
   @override
   void initState() {
     super.initState();
-    controller =
-        CameraController(cameras[indexCamera], ResolutionPreset.medium);
+    controller = CameraController(cameras[indexCamera], ResolutionPreset.medium);
     controller.initialize().then((_) {
       if (!mounted) {
         return;
       }
       setState(() {});
     });
-    WidgetsBinding.instance.addObserver(this);
+    WidgetsBinding.instance?.addObserver(this);
   }
 
   @override
   void dispose() {
-    WidgetsBinding.instance.removeObserver(this);
+    WidgetsBinding.instance?.removeObserver(this);
     super.dispose();
   }
 
                 decoration: BoxDecoration(
                   color: Colors.black,
                   border: Border.all(
-                    color:
-                        controller != null && controller.value.isRecordingVideo
-                            ? Colors.redAccent
-                            : Colors.grey,
-                    width:
-                        controller != null && controller.value.isRecordingVideo
-                            ? 1.0
-                            : 0.0,
+                    color: controller != null && controller.value.isRecordingVideo ? Colors.redAccent : Colors.grey,
+                    width: controller != null && controller.value.isRecordingVideo ? 1.0 : 0.0,
                   ),
                 ),
               ),
       mainAxisSize: MainAxisSize.max,
       children: <Widget>[
         IconButton(
-            icon: Icon(Icons.arrow_back),
+            icon: const Icon(Icons.arrow_back),
             onPressed: () {
               Get.back();
             }),
             size: 30,
           ),
           color: Colors.blue,
-          onPressed: controller != null &&
-                  controller.value.isInitialized &&
-                  !controller.value.isRecordingVideo
-              ? onTakePictureButtonPressed
-              : null,
+          onPressed: controller != null && controller.value.isInitialized && !controller.value.isRecordingVideo ? onTakePictureButtonPressed : null,
         ),
         IconButton(
           icon: const Icon(Icons.videocam, size: 35),
           color: Colors.blue,
-          onPressed: controller != null &&
-                  controller.value.isInitialized &&
-                  !controller.value.isRecordingVideo
-              ? onVideoRecordButtonPressed
-              : null,
+          onPressed: controller != null && controller.value.isInitialized && !controller.value.isRecordingVideo ? onVideoRecordButtonPressed : null,
         ),
         IconButton(
-          icon: controller != null && controller.value.isRecordingPaused
-              ? Icon(Icons.play_arrow)
-              : Icon(Icons.pause),
+          icon: controller != null && controller.value.isRecordingPaused ? const Icon(Icons.play_arrow) : const Icon(Icons.pause),
           color: Colors.blue,
-          onPressed: controller != null &&
-                  controller.value.isInitialized &&
-                  controller.value.isRecordingVideo
-              ? (controller != null && controller.value.isRecordingPaused
-                  ? onResumeButtonPressed
-                  : onPauseButtonPressed)
+          onPressed: controller != null && controller.value.isInitialized && controller.value.isRecordingVideo
+              ? (controller != null && controller.value.isRecordingPaused ? onResumeButtonPressed : onPauseButtonPressed)
               : null,
         ),
         IconButton(
           icon: const Icon(Icons.stop),
           color: Colors.red,
-          onPressed: controller != null &&
-                  controller.value.isInitialized &&
-                  controller.value.isRecordingVideo
-              ? onStopButtonPressed
-              : null,
+          onPressed: controller != null && controller.value.isInitialized && controller.value.isRecordingVideo ? onStopButtonPressed : null,
         )
       ],
     );
     if (cameras.isEmpty) {
       return const Text('Không có camera');
     } else {
-      bool disableSwitch =
-          controller != null && controller.value.isRecordingVideo;
+      var disableSwitch = controller != null && controller.value.isRecordingVideo;
       if (indexCamera == cameras.length - 1) {
         indexCamera = 0;
       } else {
         indexCamera++;
       }
       return IconButton(
-          icon: Icon(
+          icon: const Icon(
             Icons.switch_camera,
             color: Colors.green,
           ),
         setState(() {
           imagePath = filePath;
           videoController?.dispose();
-          videoController = null;
+          // videoController = null;
         });
         if (filePath != null) {
           print('Picture saved to $filePath');
   Future<String> startVideoRecording() async {
     if (!controller.value.isInitialized) {
       showInSnackBar('Vui lòng chọn camera');
-      return null;
+      // return null;
     }
 
     final Directory extDir = await getApplicationDocumentsDirectory();
-    final String dirPath = '${extDir.path}/Movies/tpf';
+    final dirPath = '${extDir.path}/Movies/tpf';
     await Directory(dirPath).create(recursive: true);
-    final String filePath = '$dirPath/${timestamp()}.mp4';
+    final filePath = '$dirPath/${timestamp()}.mp4';
 
     if (controller.value.isRecordingVideo) {
       // A recording is already started, do nothing.
-      return null;
+      // return null;
     }
 
     try {
       await controller.startVideoRecording(filePath);
     } on CameraException catch (e) {
       _showCameraException(e);
-      return null;
+      // return null;
     }
     return filePath;
   }
   Future<String> takePicture() async {
     if (!controller.value.isInitialized) {
       showInSnackBar('Vui lòng chọn camera');
-      return null;
+      // return null;
     }
     final Directory extDir = await getApplicationDocumentsDirectory();
-    final String dirPath = '${extDir.path}/Pictures/tpf';
+    final dirPath = '${extDir.path}/Pictures/tpf';
     await Directory(dirPath).create(recursive: true);
-    final String filePath = '$dirPath/${timestamp()}.jpg';
+    final filePath = '$dirPath/${timestamp()}.jpg';
 
     if (controller.value.isTakingPicture) {
       // A capture is already pending, do nothing.
-      return null;
+      // return null;
     }
 
     try {
       await controller.takePicture(filePath);
     } on CameraException catch (e) {
       _showCameraException(e);
-      return null;
+      // return null;
     }
     return filePath;
   }

lib/presentation/custom_widgets/hoz_list_view.dart

   IndexedWidgetBuilder separatorBuilder;
 
   WrapContentHozListView({
-    @required this.list,
-    @required this.itemBuilder,
-    this.separatorBuilder,
+    required this.list,
+    required this.itemBuilder,
+    required this.separatorBuilder,
   });
 
   @override
 
 class _WrapContentHozListViewState extends State<WrapContentHozListView> {
   List<Widget> _generateItemWidgets() {
-    List<Widget> items = [];
-    for (int i = 0; i < widget.list.length; i++) {
+    var items = <Widget>[];
+    for (var i = 0; i < widget.list.length; i++) {
       items.add(widget.itemBuilder(context, i));
       if (widget.separatorBuilder != null) {
         items.add(widget.separatorBuilder(context, i));
     return SingleChildScrollView(
       reverse: false,
       scrollDirection: Axis.horizontal,
-      physics: BouncingScrollPhysics(),
+      physics: const BouncingScrollPhysics(),
       child: Row(
         mainAxisAlignment: MainAxisAlignment.start,
         crossAxisAlignment: CrossAxisAlignment.start,

lib/presentation/custom_widgets/shimmer_image.dart

 
 class ShimmerImage extends StatelessWidget {
   String url;
-  BoxFit fit;
-  double width;
-  double height;
-  double aspectRatio;
-  double iconHolderSize = 40;
+  BoxFit? fit;
+  double? width;
+  double? height;
+  double? aspectRatio;
+  double? iconHolderSize = 40;
 
   ShimmerImage(
     this.url, {
         Shimmer.fromColors(
           baseColor: Colors.grey[200],
           highlightColor: Colors.grey[100],
-          child: this.aspectRatio != null
+          child: aspectRatio != null
               ? AspectRatio(
-                  aspectRatio: aspectRatio,
+                  aspectRatio: aspectRatio ?? 1,
                   child: Container(
                     child: _buildIcon(),
                   ),
                 )
               : Container(
-                  width: this.width,
-                  height: this.height,
+                  width: width,
+                  height: height,
                   child: _buildIcon(),
                 ),
         ),
-        this.aspectRatio != null
+        aspectRatio != null
             ? AspectRatio(
-                aspectRatio: aspectRatio,
+                aspectRatio: aspectRatio ?? 1,
                 child: Image.network(
                   url,
                   fit: fit ?? BoxFit.contain,
               )
             : Image.network(
                 url,
-                width: this.width,
-                height: this.height,
+                width: width,
+                height: height,
                 fit: fit ?? BoxFit.contain,
               ),
       ],

lib/presentation/custom_widgets/widget_field_time_picker.dart

 class WidgetFieldDateTimePicker extends StatefulWidget {
   final DateTime initDateTime;
   final Function(DateTime selectedDateTimeLocal) onUpdateDateTime;
-  WidgetFieldDateTimePicker(
-      {@required this.initDateTime, @required this.onUpdateDateTime});
+  WidgetFieldDateTimePicker({required this.initDateTime, required this.onUpdateDateTime});
   @override
-  _WidgetFieldDateTimePickerState createState() =>
-      _WidgetFieldDateTimePickerState();
+  _WidgetFieldDateTimePickerState createState() => _WidgetFieldDateTimePickerState();
 }
 
 class _WidgetFieldDateTimePickerState extends State<WidgetFieldDateTimePicker> {
   Widget build(BuildContext context) {
     return GetBuilder<ChangeDateTimePicker>(builder: (value) {
       return FlatButton(
-          padding:
-              EdgeInsets.only(top: 0.0, right: 0.0, bottom: 0.0, left: 0.0),
+          padding: const EdgeInsets.only(top: 0.0, right: 0.0, bottom: 0.0, left: 0.0),
           onPressed: () {
-            DatePicker.showDateTimePicker(context,
-                showTitleActions: true,
-                onChanged: (date) {}, onConfirm: (date) {
+            DatePicker.showDateTimePicker(context, showTitleActions: true, onChanged: (date) {}, onConfirm: (date) {
               changeDate.change(date);
               widget.onUpdateDateTime(date);
             }, currentTime: value.selectedDateTime, locale: LocaleType.vi);
           },
           child: Container(
-              padding: EdgeInsets.only(
-                  top: 0.0, right: 0.0, bottom: 10.5, left: 0.0),
-              decoration: BoxDecoration(
+              padding: const EdgeInsets.only(top: 0.0, right: 0.0, bottom: 10.5, left: 0.0),
+              decoration: const BoxDecoration(
                 border: kBorderTextField,
               ),
               child: Row(
                   Expanded(
                       child: Text(
                     value.selectedDateTime.displayDateTime_DDMMYYYY_HHmm(),
-                    style: TextStyle(fontSize: 14.0, color: Colors.black87),
+                    style: const TextStyle(fontSize: 14.0, color: Colors.black87),
                   )),
-                  Icon(
+                  const Icon(
                     Icons.date_range,
                     color: Colors.grey,
                   ),
 }
 
 class ChangeDateTimePicker extends GetxController {
-  DateTime selectedDateTime;
-  initValue({DateTime selectedDate}) {
+  DateTime selectedDateTime = DateTime.now();
+  initValue({DateTime? selectedDate}) {
     selectedDateTime = selectedDate ?? DateTime.now();
     update();
   }

lib/presentation/custom_widgets/widget_loading.dart

                     Align(
                       alignment: Alignment.center,
                       child: Container(
-                          decoration: new BoxDecoration(
+                          decoration: BoxDecoration(
                               color: Colors.white,
                               borderRadius:
-                                  new BorderRadius.all(Radius.circular(16.0))),
+                                  const BorderRadius.all(Radius.circular(16.0))),
                           width: 80.0,
                           height: 80.0),
                     ),
                     ),
                     Container(
                       alignment: Alignment.center,
-                      child: SizedBox(
+                      child: const SizedBox(
                         child: CircularProgressIndicator(
                           strokeWidth: 2.0,
                         ),

lib/presentation/custom_widgets/widget_media_picker.dart

 import 'hoz_list_view.dart';
 
 class WidgetMediaPicker extends StatefulWidget {
-  final List<Media> currentItems;
-  final Function(List<String> addNewFilePaths, List<String> deleteFilePaths)
-      onChangeFiles;
-  WidgetMediaPicker({this.currentItems, @required this.onChangeFiles});
+  final List<Media>? currentItems;
+  final Function(List<String> addNewFilePaths, List<String> deleteFilePaths) onChangeFiles;
+  WidgetMediaPicker({this.currentItems, required this.onChangeFiles});
   @override
   _WidgetMediaPickerState createState() => _WidgetMediaPickerState();
 }
 
 class _WidgetMediaPickerState extends State<WidgetMediaPicker> {
   List<Media> currentItems = [];
-  List<String> addNewFilePaths = new List<String>();
-  List<String> deleteFilePaths = new List<String>();
+  List<String> addNewFilePaths = <String>[];
+  List<String> deleteFilePaths = <String>[];
 
   @override
   void initState() {
   @override
   Widget build(BuildContext context) {
     return BlocProvider<MediaHelperBloc>(
-        create: (BuildContext contextA) =>
-            MediaHelperBloc()..add(ChangeListMedia(items: currentItems)),
-        child: BlocBuilder<MediaHelperBloc, MediaHelperState>(
-            builder: (contextB, state) {
+        create: (BuildContext contextA) => MediaHelperBloc()..add(ChangeListMedia(items: currentItems)),
+        child: BlocBuilder<MediaHelperBloc, MediaHelperState>(builder: (contextB, state) {
           if (state is MediaHelperFailure) {
             return Container();
           } else if (state is MediaHelperSuccess) {
             currentItems = widget.currentItems ?? [];
             return Container(
-                padding: EdgeInsets.all(8),
+                padding: const EdgeInsets.all(8),
                 child: Column(
                   crossAxisAlignment: CrossAxisAlignment.start,
                   children: <Widget>[
-                    Text('Hình ảnh/ Video',
-                        style: TextStyle(color: Colors.black54, fontSize: 16)),
-                    SizedBox(
+                    const Text('Hình ảnh/ Video', style: TextStyle(color: Colors.black54, fontSize: 16)),
+                    const SizedBox(
                       height: 8,
                     ),
                     Row(
                                     ));
                           },
                         ),
-                        SizedBox(
+                        const SizedBox(
                           width: 8.0,
                         ),
                         Expanded(
 
   Widget multipleChoice(BuildContext context) {
     return CupertinoAlertDialog(
-      title: Text(label_title_select_media),
+      title: const Text(label_title_select_media),
       actions: <Widget>[
         CupertinoDialogAction(
             child: const Text(label_take_photo_or_video),
             onPressed: () {
               Navigator.pop(context, 'Discard');
-              Navigator.of(context)
-                  .push(MaterialPageRoute(builder: (context) => CameraHelper()))
-                  .then((value) {
+              Navigator.of(context).push(MaterialPageRoute(builder: (context) => CameraHelper())).then((value) {
                 if (value != null) {
                   print("ok");
                   print(value);
                   String filePath = value[0];
-                  File f = File(filePath);
+                  var f = File(filePath);
                   f.length().then((lengthFileInBytes) {
                     if (lengthFileInBytes > ConstCommon.kFileSize) {
                       Utils.showSnackBarWarning(message: label_file_to_large);
                     } else {
                       bool isVideo = value[1];
-                      Media newMedia = Media()
+                      var newMedia = Media()
                         ..isVideo = isVideo
                         ..isServerFile = false
                         ..pathFile = filePath;
                       currentItems.add(newMedia);
                       addNewFilePaths.add(filePath);
-                      BlocProvider.of<MediaHelperBloc>(context)
-                        ..add(ChangeListMedia(items: currentItems));
+                      BlocProvider.of<MediaHelperBloc>(context)..add(ChangeListMedia(items: currentItems));
                       widget.onChangeFiles(addNewFilePaths, deleteFilePaths);
                     }
                   });
             child: const Text(label_select_image_from_library),
             onPressed: () async {
               Navigator.pop(context, 'Discard');
-              FilePickerResult result = await FilePicker.platform
-                  .pickFiles(type: FileType.image, allowMultiple: true);
+              FilePickerResult result = await FilePicker.platform.pickFiles(type: FileType.image, allowMultiple: true);
               if (result != null) {
-                var listFuture = List<Future<File>>();
+                var listFuture = <Future<File>>[];
                 result.files.forEach((element) {
                   listFuture.add(UtilAction.compressImage(File(element.path)));
                 });
                 Future.wait(listFuture).then((values) {
-                  bool isExistedFileTooLarge = false;
+                  var isExistedFileTooLarge = false;
                   values.forEach((compressFile) {
                     if (compressFile.lengthSync() > ConstCommon.kFileSize) {
                       isExistedFileTooLarge = true;
                     } else {
-                      Media newMedia = Media()
+                      var newMedia = Media()
                         ..isVideo = false
                         ..isServerFile = false
                         ..pathFile = compressFile.path;
                     }
                   });
                   if (isExistedFileTooLarge) {
-                    Utils.showSnackBarWarning(
-                        message: "Tập tin có kích thước lớn đã được loại bỏ.");
+                    Utils.showSnackBarWarning(message: "Tập tin có kích thước lớn đã được loại bỏ.");
                   }
-                  BlocProvider.of<MediaHelperBloc>(context)
-                    ..add(ChangeListMedia(items: currentItems));
+                  BlocProvider.of<MediaHelperBloc>(context)..add(ChangeListMedia(items: currentItems));
                   widget.onChangeFiles(addNewFilePaths, deleteFilePaths);
                 });
               }
             child: const Text(label_select_video_from_library),
             onPressed: () async {
               Navigator.pop(context, 'Discard');
-              FilePickerResult result = await FilePicker.platform
-                  .pickFiles(type: FileType.video, allowMultiple: true);
+              FilePickerResult result = await FilePicker.platform.pickFiles(type: FileType.video, allowMultiple: true);
 
               if (result != null) {
-                bool isExistedFileTooLarge = false;
+                var isExistedFileTooLarge = false;
                 result.files?.forEach((videoFile) {
                   if (videoFile.size * 1000 > ConstCommon.kFileSize) {
                     isExistedFileTooLarge = true;
                   } else {
-                    Media newMedia = Media()
+                    var newMedia = Media()
                       ..isVideo = true
                       ..isServerFile = false
                       ..pathFile = videoFile.path;
                   }
                 });
                 if (isExistedFileTooLarge) {
-                  Utils.showSnackBarWarning(
-                      message: "Tập tin có kích thước lớn đã được loại bỏ.");
+                  Utils.showSnackBarWarning(message: "Tập tin có kích thước lớn đã được loại bỏ.");
                 }
-                BlocProvider.of<MediaHelperBloc>(context)
-                  ..add(ChangeListMedia(items: currentItems));
+                BlocProvider.of<MediaHelperBloc>(context)..add(ChangeListMedia(items: currentItems));
                 widget.onChangeFiles(addNewFilePaths, deleteFilePaths);
               }
             }),
         CupertinoDialogAction(
             child: const Text(label_cancel),
-            textStyle: TextStyle(fontWeight: FontWeight.bold),
+            textStyle: const TextStyle(fontWeight: FontWeight.bold),
             isDefaultAction: true,
             onPressed: () {
               Navigator.pop(context, 'Cancel');
   }
 
   _buildListPoster() {
-    return BlocBuilder<MediaHelperBloc, MediaHelperState>(
-        builder: (context, state) {
+    return BlocBuilder<MediaHelperBloc, MediaHelperState>(builder: (context, state) {
       if (state is MediaHelperSuccess) {
         return WrapContentHozListView(
-            list: currentItems,
-            itemBuilder: (context, index) {
-              var item = currentItems[index];
-              return Container(
-                width: 120,
-                height: 120,
-                child: _WidgetItemMedia(
-                    item: item,
-                    deleteImage: (item) {
-                      if (item.isServerFile) {
-                        var url = item.pathFile
-                            .replaceAll(ConstCommon.baseImageUrl, '');
-                        deleteFilePaths.add(url);
-                      }
-                      addNewFilePaths.remove(item.pathFile);
-                      currentItems.remove(item);
-                      widget.onChangeFiles(addNewFilePaths, deleteFilePaths);
-                      BlocProvider.of<MediaHelperBloc>(context)
-                          .add(ChangeListMedia(items: currentItems));
-                    }),
-              );
-            });
+          list: currentItems,
+          itemBuilder: (context, index) {
+            var item = currentItems[index];
+            return Container(
+              width: 120,
+              height: 120,
+              child: _WidgetItemMedia(
+                  item: item,
+                  deleteImage: (item) {
+                    if (item.isServerFile ?? false) {
+                      var url = item.pathFile?.replaceAll(ConstCommon.baseImageUrl, '');
+                      deleteFilePaths.add(url ?? '');
+                    }
+                    addNewFilePaths.remove(item.pathFile);
+                    currentItems.remove(item);
+                    widget.onChangeFiles(addNewFilePaths, deleteFilePaths);
+                    BlocProvider.of<MediaHelperBloc>(context).add(ChangeListMedia(items: currentItems));
+                  }),
+            );
+          },
+          separatorBuilder: (BuildContext context, int index) {
+            return const SizedBox.shrink();
+          },
+        );
       }
       return Container();
     });
   ItemMediaCallback deleteImage;
   final Media item;
 
-  _WidgetItemMedia({@required this.item, @required this.deleteImage});
+  _WidgetItemMedia({required this.item, required this.deleteImage});
 
-  BuildContext _context;
   double positionIconDelete = -(120.0 - 36);
 
   @override
   Widget build(BuildContext context) {
-    _context = context;
     return GestureDetector(
         onTap: () {
           print("Show preview image or video");
         },
         child: Stack(
           alignment: Alignment.topRight,
-          overflow: Overflow.visible,
+          // overflow: Overflow.visible,
           children: <Widget>[
             Positioned.fill(
-                child: item.isVideo
+                child: (item.isVideo ?? false)
                     ? VideoWidget(
-                        pathFile: item.pathFile,
-                        isServerFile: item.isServerFile,
+                        pathFile: item.pathFile ?? '',
+                        isServerFile: item.isServerFile ?? false,
                         play: false,
                       )
                     : Container(
-                        margin: EdgeInsets.all(4.0),
+                        margin: const EdgeInsets.all(4.0),
                         decoration: BoxDecoration(
-                            color: Colors.white,
-                            border: Border.all(color: Colors.grey),
-                            borderRadius:
-                                BorderRadius.all(Radius.circular(8.0))),
-                        child: item.isServerFile
-                            ? CachedNetworkImage(
-                                placeholder: (context, url) =>
-                                    Icon(Icons.crop_original),
-                                imageUrl: item.pathFile)
-                            : Image.file(File(item.pathFile)),
+                            color: Colors.white, border: Border.all(color: Colors.grey), borderRadius: const BorderRadius.all(Radius.circular(8.0))),
+                        child: (item.isServerFile ?? false)
+                            ? CachedNetworkImage(placeholder: (context, url) => const Icon(Icons.crop_original), imageUrl: item.pathFile)
+                            : Image.file(File(item.pathFile ?? '')),
                       )),
             Positioned.fill(
                 top: positionIconDelete,
                 right: positionIconDelete,
                 child: IconButton(
-                    icon: Icon(
+                    icon: const Icon(
                       Icons.delete,
                       color: Colors.redAccent,
                       size: 24,

lib/presentation/custom_widgets/widget_rounded_rect_indicator.dart

   final BoxPainter _painter;
 
   RoundedRectIndicator({
-    @required Color color,
-    @required double radius,
+    required Color color,
+    required double radius,
     double padding = 0.0,
     double weight = 3.0,
   }) : _painter = _RectPainter(color, radius, padding, weight);
 
   @override
-  BoxPainter createBoxPainter([onChanged]) {
+  BoxPainter createBoxPainter([VoidCallback? onChanged]) {
     return _painter;
   }
 }
 
   @override
   void paint(Canvas canvas, Offset offset, ImageConfiguration cfg) {
-    var width = cfg.size.width;
-    var height = cfg.size.height;
+    var width = cfg.size?.width ?? 0.0;
+    var height = cfg.size?.height ?? 0.0;
 
     var left = 0.0;
     var top = height - indicatorPaddingBottom;

lib/presentation/custom_widgets/widget_search.dart

 
 class SearchWidget extends StatefulWidget {
   final Function(String) searchPressed;
-  SearchWidget({@required this.searchPressed});
+  SearchWidget({required this.searchPressed});
   @override
   _SearchWidgetState createState() => _SearchWidgetState();
 }
 
 class _SearchWidgetState extends State<SearchWidget> {
-  BuildContext _blocContext;
   TextEditingController _searchController = TextEditingController();
 
   @override
               padding: const EdgeInsets.only(right: 8, top: 0, bottom: 0),
               child: Container(
                 child: Padding(
-                  padding: const EdgeInsets.only(
-                      left: 16, right: 16, top: 4, bottom: 4),
+                  padding: const EdgeInsets.only(left: 16, right: 16, top: 4, bottom: 4),
                   child: TextField(
                     textInputAction: TextInputAction.done,
                     controller: _searchController,
                     cursorColor: AppColors.GRAY1,
                     decoration: InputDecoration(
                       suffixIcon: IconButton(
-                          icon: Icon(
+                          icon: const Icon(
                             Icons.search,
                             size: 30,
                           ),
 
   @override
   Widget build(BuildContext context) {
-    _blocContext = context;
     return Container(child: getSearchBarUI());
   }
 

lib/presentation/custom_widgets/widget_show_video.dart

   final bool isServerFile;
   final String pathFile;
 
-  const VideoWidget(
-      {Key key,
-      @required this.pathFile,
-      @required this.play,
-      @required this.isServerFile})
-      : super(key: key);
+  const VideoWidget({Key? key, required this.pathFile, required this.play, required this.isServerFile}) : super(key: key);
 
   @override
   _VideoWidgetState createState() => _VideoWidgetState();
 }
 
 class _VideoWidgetState extends State<VideoWidget> {
-  VideoPlayerController videoPlayerController;
-  Future<void> _initializeVideoPlayerFuture;
+  late VideoPlayerController videoPlayerController;
+  late Future<void> _initializeVideoPlayerFuture;
 
   @override
   void initState() {
       //       Ensure the first frame is shown after the video is initialized, even before the play button has been pressed.
       videoPlayerController.play();
       videoPlayerController.setVolume(0.0);
-      Timer.periodic(Duration(seconds: 1), (_) {
+      Timer.periodic(const Duration(seconds: 1), (_) {
         videoPlayerController.pause();
       });
       setState(() {});
       future: _initializeVideoPlayerFuture,
       builder: (context, snapshot) {
         if (snapshot.connectionState == ConnectionState.done) {
-          return new Container(
+          return Container(
             child: Container(
-              key: new PageStorageKey(widget.pathFile),
+              key: PageStorageKey(widget.pathFile),
               child: Container(
-                padding: EdgeInsets.all(1),
+                padding: const EdgeInsets.all(1),
                 width: 100,
                 height: 100,
                 decoration: BoxDecoration(
-                    color: Colors.white,
-                    border: Border.all(color: Colors.red),
-                    borderRadius: BorderRadius.all(Radius.circular(8.0))),
+                    color: Colors.white, border: Border.all(color: Colors.red), borderRadius: const BorderRadius.all(Radius.circular(8.0))),
                 child: VideoPlayer(videoPlayerController),
               ),
             ),
           );
         } else {
-          return Center(
+          return const Center(
             child: CircularProgressIndicator(),
           );
         }

lib/presentation/custom_widgets/widget_text_field_description.dart

 class TextFieldDescriptionWidget extends StatelessWidget {
   final TextEditingController controller;
   final Function onSaved;
-  TextFieldDescriptionWidget(
-      {@required this.onSaved, @required this.controller});
+  TextFieldDescriptionWidget({required this.onSaved, required this.controller});
   @override
   Widget build(BuildContext context) {
     return Container(
-      padding: EdgeInsets.all(8),
-      decoration: BoxDecoration(
-          color: AppColors.YELLOW.withOpacity(0.1),
-          borderRadius: BorderRadius.circular(8)),
+      padding: const EdgeInsets.all(8),
+      decoration: BoxDecoration(color: AppColors.YELLOW.withOpacity(0.1), borderRadius: BorderRadius.circular(8)),
       child: TextFormField(
         keyboardType: TextInputType.text,
         controller: controller,
-        decoration: InputDecoration(
-            labelText: "Ghi chú",
-            hintText: 'Ghi chú',
-            border: InputBorder.none),
-        onSaved: onSaved,
+        decoration: const InputDecoration(labelText: "Ghi chú", hintText: 'Ghi chú', border: InputBorder.none),
+        onSaved: (v) {
+          onSaved();
+        },
       ),
     );
   }

lib/presentation/custom_widgets/widget_text_form_field.dart

 
 class WidgetTextFormFieldNumber extends StatelessWidget {
   final TextEditingController textController;
-  final void Function(String) onSaved;
-  final void Function(String) validator;
+  final void Function(String?) onSaved;
+  final void Function(String?) validator;
   final void Function(String) onChanged;
   final String hintValue;
   WidgetTextFormFieldNumber(
-      {@required this.textController,
-      this.onSaved,
-      @required this.hintValue,
-      this.validator,
-      this.onChanged});
+      {required this.textController, required this.onSaved, required this.hintValue, required this.validator, required this.onChanged});
   @override
   Widget build(BuildContext context) {
     return TextFormField(
-      keyboardType: TextInputType.numberWithOptions(decimal: true),
+      keyboardType: const TextInputType.numberWithOptions(decimal: true),
       inputFormatters: [
         FilteringTextInputFormatter.allow(ConstCommon.regExpDecimal),
         ThousandsFormatter(allowFraction: true),
       decoration: InputDecoration(
         labelText: hintValue,
       ),
-      validator: validator ??
-          (String value) {
-            return Validators.validNumberOrEmpty(value, label_invalid_number);
-          },
+      validator: (v) {
+        validator(v);
+      },
       controller: textController,
-      onSaved: onSaved,
+      onSaved: (v) {
+        onSaved(v);
+      },
       onChanged: onChanged,
     );
   }

lib/presentation/custom_widgets/widget_toast.dart

 
 class WidgetToast extends StatelessWidget {
   String message;
-  Color color = Colors.green;
-  WidgetToast({@required this.message, this.color});
+  Color? color = Colors.green;
+  WidgetToast({required this.message, this.color});
 
   @override
   Widget build(BuildContext context) {
       child: Row(
         mainAxisSize: MainAxisSize.min,
         children: [
-          Icon(Icons.check),
-          SizedBox(
+          const Icon(Icons.check),
+          const SizedBox(
             width: 12.0,
           ),
           Text(message),

lib/presentation/custom_widgets/widget_utils.dart

 import 'package:get/get.dart';
 
 class Utils {
-  static void showSnackBarSuccess({String message}) {
+  static void showSnackBarSuccess({required String message}) {
     if (Get.isSnackbarOpen) Get.back();
     Get.snackbar(null, message,
-        icon: Icon(
+        icon: const Icon(
           Icons.done,
           color: Colors.white,
         ),
         backgroundColor: Colors.green);
   }
 
-  static void showSnackBarError({String message}) {
+  static void showSnackBarError({required String message}) {
     if (Get.isSnackbarOpen) Get.back();
     Get.snackbar(null, message,
-        icon: Icon(
+        icon: const Icon(
           Icons.error,
           color: Colors.white,
         ),
         backgroundColor: Colors.red);
   }
 
-  static void showSnackBarWarning({String message}) {
+  static void showSnackBarWarning({required String message}) {
     if (Get.isSnackbarOpen) Get.back();
     Get.snackbar(null, message,
-        icon: Icon(
+        icon: const Icon(
           Icons.warning,
           color: Colors.yellow,
         ),
   }
 
   static void showDialog(
-      {@required String title,
-      @required String message,
-      @required String textConfirm,
-      @required String textCancel,
-      @required Function() onConfirm}) {
+      {required String title, required String message, required String textConfirm, required String textCancel, required Function() onConfirm}) {
     if (Get.isDialogOpen) Get.back();
     Get.defaultDialog(
       title: title,
     );
   }
 
-  static void showDialogConfirmSupply({@required Function() onConfirm}) {
+  static void showDialogConfirmSupply({required Function() onConfirm}) {
     if (Get.isDialogOpen) Get.back();
     Get.defaultDialog(
         title: "Vật tư chưa được thêm",

lib/presentation/screens/account/sc_account.dart

   _clickSignOut() async {
     context.bloc<AuthenticationBloc>().add(AuthenticationLogoutRequested());
     try {
-      String pushKey = await pref.getString(DATA_CONST.PUSH_KEY);
+      var pushKey = await pref.getString(DATA_CONST.PUSH_KEY);
       if (pushKey.isNotEmpty) {
         _userRepository
             .deleteFcmToken(pushKey)
         child: Column(
           crossAxisAlignment: CrossAxisAlignment.start,
           children: <Widget>[
-            SizedBox(
+            const SizedBox(
               height: 8,
             ),
             Container(
-                padding: EdgeInsets.all(8),
+                padding: const EdgeInsets.all(8),
                 color: Colors.white,
-                child: Text(
+                child: const Text(
                   'Cá nhân',
                   style: TextStyle(fontWeight: FontWeight.w500, fontSize: 22),
                 )),
               ),
               Container(
                 padding:
-                    EdgeInsets.only(left: 12, right: 8, top: 14, bottom: 14),
+                    const EdgeInsets.only(left: 12, right: 8, top: 14, bottom: 14),
                 child: Row(
                   children: [
-                    Expanded(
+                    const Expanded(
                         child: Text(
                       'Phiên bản',
                       style:
               ),
               ButtonIconWidget(
                   title: 'Đăng xuất',
-                  titleStyle: TextStyle(
+                  titleStyle: const TextStyle(
                       fontSize: 16,
                       fontWeight: FontWeight.w100,
                       color: Colors.red),

lib/presentation/screens/actions/bloc/action_detail_bloc.dart

 
 class ActionDetailBloc extends Bloc<ActionDetailEvent, ActionDetailState> {
   final Repository repository;
-  ActionDetailBloc({@required this.repository}) : super(ActionDetailInitial());
+  ActionDetailBloc({required this.repository}) : super(ActionDetailInitial());
   final dio = DioProvider.instance();
 
   @override
       } else {
         try {
           yield ActionDetailLoading();
-          Response<String> response = await dio.get(
-              "${ConstCommon.baseUrl}/${event.apiActivity}/${event.activityId}");
+          Response<String> response = await dio.get("${ConstCommon.baseUrl}/${event.apiActivity}/${event.activityId}");
           final jsonData = json.decode(response.data);
           yield ActionDetailSuccess(item: jsonData);
         } catch (error) {
-          yield ActionDetailFailure(
-              errorString: AppException.handleError(error));
+          yield ActionDetailFailure(errorString: AppException.handleError(error));
         }
       }
     }

lib/presentation/screens/actions/bloc/action_detail_event.dart

   final bool isNeedFetchData;
   final String apiActivity;
   final int activityId;
-  FetchData(
-      {@required this.isNeedFetchData,
-      @required this.apiActivity,
-      @required this.activityId});
+  FetchData({required this.isNeedFetchData, required this.apiActivity, required this.activityId});
 }

lib/presentation/screens/actions/bloc/action_detail_state.dart

 
 class ActionDetailFailure extends ActionDetailState {
   final String errorString;
-  ActionDetailFailure({@required this.errorString});
+  ActionDetailFailure({required this.errorString});
 }
 
 class ActionDetailSuccess<T> extends ActionDetailState {
   final T item;
 
-  ActionDetailSuccess({this.item});
+  ActionDetailSuccess({required this.item});
 
-  @override
-  List<Object> get props => [item];
+  // @override
+  // List<Object> get props => [item];
 }

lib/presentation/screens/actions/bloc_get_harvest.dart

 
   Stream<dynamic> get actions => _getHarvestFetcher.stream;
 
-  void getHarvests(
-      Function(dynamic) onSuccess, Function(String) onError) async {
+  void getHarvests(Function(dynamic) onSuccess, Function(String) onError) async {
     try {
       _repository.getHarvests().then((value) {
         onSuccess(value);
       });
     } catch (e) {
       _getHarvestFetcher.addError(e);
-      onError(e);
+      onError(e.toString());
     }
   }
 

lib/presentation/screens/actions/controller/ChangeDevice.dart

 import 'package:get/get.dart';
 
 class ChangeDevice extends GetxController {
-  Device currentDevice;
-  int selectedDeviceId;
-  String selectedDeviceName;
+  Device currentDevice = Device();
+  int selectedDeviceId = -1;
+  String selectedDeviceName = '';
 
   void initValue() {
     currentDevice = Device();
 
   void change(Device device) {
     currentDevice = device;
-    selectedDeviceId = device.id;
-    selectedDeviceName = device.name;
+    selectedDeviceId = device.id ?? -1;
+    selectedDeviceName = device.name ?? '';
     update();
   }
 

lib/presentation/screens/actions/controller/ChangeFieldInForm.dart

 import 'package:get/get.dart';
 
 class ChangeFieldFormSupply extends GetxController {
-  bool isChanged;
+  bool isChanged = false;
   void init() {
     isChanged = false;
     update();

lib/presentation/screens/actions/controller/ChangeFormButton.dart

 import 'package:get/get.dart';
 
 class ChangeButtonInForm extends GetxController {
-  bool isEdit;
+  bool isEdit = false;
   void resetValue() {
     isEdit = false;
     update();

lib/presentation/screens/actions/controller/ChangeSupplyUsing.dart

 import 'package:get/get.dart';
 
 class ChangeSupplyUsing extends GetxController {
-  List<SuppliesUsing> currentItems;
-  SuppliesUsing currentSupplyUsing;
-  int currentIndex;
+  List<SuppliesUsing> currentItems = <SuppliesUsing>[];
+  SuppliesUsing currentSupplyUsing = SuppliesUsing();
+  int currentIndex = -1;
   void init(List<SuppliesUsing> initItems) {
     currentItems = initItems;
     currentSupplyUsing = SuppliesUsing();

lib/presentation/screens/actions/controller/ChangeUnit.dart

 import 'package:get/get.dart';
 
 class ChangeUnit extends GetxController {
-  List<String> currentUnits;
-  String selectedUnit;
+  List<String> currentUnits = [];
+  String selectedUnit = '';
 
   initValue() {
     currentUnits = [];

lib/presentation/screens/actions/crop_status/sc_edit_action_crop_status.dart

 class EditActionCropStatusScreen extends StatefulWidget {
   final int cropId;
   final bool isEdit;
-  final int activityId;
-  EditActionCropStatusScreen(
-      {@required this.cropId, this.isEdit = false, this.activityId});
+  final int? activityId;
+  EditActionCropStatusScreen({required this.cropId, this.isEdit = false, this.activityId});
   @override
-  _EditActionCropStatusScreenState createState() =>
-      _EditActionCropStatusScreenState();
+  _EditActionCropStatusScreenState createState() => _EditActionCropStatusScreenState();
 }
 
-class _EditActionCropStatusScreenState
-    extends State<EditActionCropStatusScreen> {
-  final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
+class _EditActionCropStatusScreenState extends State<EditActionCropStatusScreen> {
+  final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
   final _repository = Repository();
   GlobalKey<FormState> _formKey = GlobalKey();
   bool _autoValidate = false;
   final _executeByController = TextEditingController();
 
   DateTime executeTime = DateTime.now();
-  List<String> filePaths = List<String>();
+  List<String> filePaths = <String>[];
   var changeFileController = Get.put(ChangeFileController());
 
   Future<Null> getSharedPrefs() async {
   }
 
   _validateInputs() async {
-    if (_formKey.currentState.validate()) {
-      _formKey.currentState.save();
+    if (_formKey.currentState!.validate()) {
+      _formKey.currentState!.save();
       LoadingDialog.showLoadingDialog(context);
       filePaths = Get.find<ChangeFileController>().newFiles;
       //Create request general model
       try {
-        RequestGeneralModel generalModel = RequestGeneralModel()
+        var generalModel = RequestGeneralModel()
           ..cropId = _cropStatus.cropId
           ..activityId = _cropStatus.activityId
           ..description = _cropStatus.description
           ..executeDate = _cropStatus.executeDate;
-        var generalDetail = List<ObjectUpdateDetail>();
+        var generalDetail = <ObjectUpdateDetail>[];
         generalDetail.add(ObjectUpdateDetail()
           ..name = "TY_LE_CAY_TRONG"
           ..index = _cropStatus.cropRate);
     return WidgetFieldDateTimePicker(
         initDateTime: executeTime,
         onUpdateDateTime: (selectedDate) {
-          _cropStatus.executeDate =
-              selectedDate.convertLocalDateTimeToStringUtcDateTime();
+          _cropStatus.executeDate = selectedDate.convertLocalDateTimeToStringUtcDateTime();
         });
   }
 
       hintValue: "Tỉ lệ lên cây",
       textController: _cropRateController,
       onSaved: (newValue) {
-        _cropStatus.cropRate = newValue;
+        _cropStatus.cropRate = newValue ?? '';
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "Số lượng lên cây",
       textController: _numTreeController,
       onSaved: (newValue) {
-        _cropStatus.numberOfTreeToGrow = newValue;
+        _cropStatus.numberOfTreeToGrow = newValue ?? '';
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "Chiều cao cây",
       textController: _heightOfTreeController,
       onSaved: (newValue) {
-        _cropStatus.heightOfTree = newValue;
+        _cropStatus.heightOfTree = newValue ?? '';
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "Số lá",
       textController: _numberOfLeafController,
       onSaved: (newValue) {
-        _cropStatus.numberOfLeaf = newValue;
+        _cropStatus.numberOfLeaf = newValue ?? '';
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "Kích thước lá",
       textController: _leafSizeController,
       onSaved: (newValue) {
-        _cropStatus.leafSize = newValue;
+        _cropStatus.leafSize = newValue ?? '';
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
   Widget _leafColorField() {
     return TextFormField(
       keyboardType: TextInputType.text,
-      decoration: InputDecoration(labelText: "Màu lá"),
+      decoration: const InputDecoration(labelText: "Màu lá"),
       controller: _leafColorController,
       onSaved: (newValue) {
-        _cropStatus.leafColor = newValue;
+        _cropStatus.leafColor = newValue ?? '';
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "Dài đốt thân",
       textController: _internodeLengthController,
       onSaved: (newValue) {
-        _cropStatus.internodeLength = newValue;
+        _cropStatus.internodeLength = newValue ?? '';
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
   Widget _abilityProduceBudsField() {
     return TextFormField(
       keyboardType: TextInputType.text,
-      decoration: InputDecoration(labelText: "Khả năng sinh chồi"),
+      decoration: const InputDecoration(labelText: "Khả năng sinh chồi"),
       controller: _abilityProduceBudsController,
       onSaved: (newValue) {
-        _cropStatus.abilityProduceBuds = newValue;
+        _cropStatus.abilityProduceBuds = newValue ?? '';
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
   Widget _executeByField() {
     return TextFormField(
       keyboardType: TextInputType.text,
-      decoration: InputDecoration(labelText: "Người thực hiện"),
+      decoration: const InputDecoration(labelText: "Người thực hiện"),
       enabled: false,
       controller: _executeByController,
       onSaved: (newValue) {},
               appBar: AppBarWidget(
                 isBack: true,
                 action: InkWell(
-                  child: Text(
+                  child: const Text(
                     'Huỷ',
-                    style: TextStyle(
-                        color: Colors.red, fontWeight: FontWeight.normal),
+                    style: TextStyle(color: Colors.red, fontWeight: FontWeight.normal),
                   ),
                   onTap: () {
                     if (Get.isSnackbarOpen) Get.back();
                   child: MultiBlocProvider(
                 providers: [
                   BlocProvider<ActionDetailBloc>(
-                      create: (context) =>
-                          ActionDetailBloc(repository: Repository())
-                            ..add(FetchData(
-                                isNeedFetchData: widget.isEdit,
-                                apiActivity: ConstCommon.apiDetailCropStatus,
-                                activityId: widget.activityId))),
+                    create: (context) => ActionDetailBloc(repository: Repository())
+                      ..add(
+                        FetchData(isNeedFetchData: widget.isEdit, apiActivity: ConstCommon.apiDetailCropStatus, activityId: widget.activityId ?? -1),
+                      ),
+                  ),
                   BlocProvider<MediaHelperBloc>(
-                    create: (context) =>
-                        MediaHelperBloc()..add(ChangeListMedia(items: [])),
+                    create: (context) => MediaHelperBloc()..add(ChangeListMedia(items: [])),
                   )
                 ],
                 child: Form(
                     key: _formKey,
-                    autovalidate: _autoValidate,
+                    // autovalidate: _autoValidate,
                     child: SafeArea(
                       child: SingleChildScrollView(
-                        child:
-                            BlocConsumer<ActionDetailBloc, ActionDetailState>(
+                        child: BlocConsumer<ActionDetailBloc, ActionDetailState>(
                           listener: (context, state) async {
                             if (state is ActionDetailFailure) {
                               print("fail");
                               print("success");
                               print(state.item);
                               _cropStatus = CropStatus.fromJson(state.item);
-                              _cropStatus.activityId = widget.activityId;
-                              _cropRateController.text = _cropStatus.cropRate
-                                  .formatStringToStringDecimal();
-                              _numTreeController.text = _cropStatus
-                                  .numberOfTreeToGrow
-                                  .formatStringToStringDecimal();
-                              _heightOfTreeController.text = _cropStatus
-                                  .heightOfTree
-                                  .formatStringToStringDecimal();
-                              _numberOfLeafController.text = _cropStatus
-                                  .numberOfLeaf
-                                  .formatStringToStringDecimal();
-                              _leafSizeController.text = _cropStatus.leafSize
-                                  .formatStringToStringDecimal();
-                              _leafColorController.text =
-                                  _cropStatus.leafColor ?? "";
-                              _abilityProduceBudsController.text =
-                                  _cropStatus.abilityProduceBuds ?? "";
-                              _internodeLengthController.text = _cropStatus
-                                  .internodeLength
-                                  .formatStringToStringDecimal();
-                              _descriptionController.text =
-                                  _cropStatus.description ?? "";
-                              _executeByController.text =
-                                  _cropStatus.executeBy ?? "";
+                              _cropStatus.activityId = widget.activityId ?? -1;
+                              _cropRateController.text = _cropStatus.cropRate?.formatStringToStringDecimal() ?? '';
+                              _numTreeController.text = _cropStatus.numberOfTreeToGrow?.formatStringToStringDecimal() ?? '';
+                              _heightOfTreeController.text = _cropStatus.heightOfTree?.formatStringToStringDecimal() ?? '';
+                              _numberOfLeafController.text = _cropStatus.numberOfLeaf?.formatStringToStringDecimal() ?? '';
+                              _leafSizeController.text = _cropStatus.leafSize?.formatStringToStringDecimal() ?? '';
+                              _leafColorController.text = _cropStatus.leafColor ?? "";
+                              _abilityProduceBudsController.text = _cropStatus.abilityProduceBuds ?? "";
+                              _internodeLengthController.text = _cropStatus.internodeLength?.formatStringToStringDecimal() ?? '';
+                              _descriptionController.text = _cropStatus.description ?? "";
+                              _executeByController.text = _cropStatus.executeBy ?? "";
 
-                              Get.find<ChangeDateTimePicker>().change(_cropStatus
-                                  .executeDate
-                                  .convertStringServerDateTimeToLocalDateTime());
+                              Get.find<ChangeDateTimePicker>().change(
+                                _cropStatus.executeDate?.convertStringServerDateTimeToLocalDateTime() ?? DateTime.now(),
+                              );
                               //Show media
-                              if (Validators.stringNotNullOrEmpty(
-                                  _cropStatus.media)) {
-                                BlocProvider.of<MediaHelperBloc>(context).add(
-                                    ChangeListMedia(
-                                        items:
-                                            UtilAction.convertFilePathToMedia(
-                                                _cropStatus.media)));
+                              if (Validators.stringNotNullOrEmpty(_cropStatus.media ?? '')) {
+                                BlocProvider.of<MediaHelperBloc>(context)
+                                    .add(ChangeListMedia(items: UtilAction.convertFilePathToMedia(_cropStatus.media ?? '')));
                               }
                             } else if (state is ActionDetailInitial) {
                               print("init");
                                 Padding(
                                   padding: const EdgeInsets.all(8.0),
                                   child: Column(
-                                    crossAxisAlignment:
-                                        CrossAxisAlignment.start,
+                                    crossAxisAlignment: CrossAxisAlignment.start,
                                     children: <Widget>[
-                                      Text(
+                                      const Text(
                                         plot_action_crop_status,
-                                        style: TextStyle(
-                                            fontWeight: FontWeight.w500,
-                                            fontSize: 22),
+                                        style: TextStyle(fontWeight: FontWeight.w500, fontSize: 22),
                                       ),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       Container(
                                         width: double.infinity,
-                                        child: Text(
+                                        child: const Text(
                                           "Ngày thực hiện *",
-                                          style: TextStyle(
-                                              color: Colors.black54,
-                                              fontSize: 13.0),
+                                          style: TextStyle(color: Colors.black54, fontSize: 13.0),
                                         ),
                                       ),
                                       _btnExecuteTimePicker(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _cropRateField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _numTreeField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _hightOfTreeField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _numberOfLeafField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _leafSizeField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _leafColorField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _internodeLengthField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _abilityProduceBudsField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _desciptionField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _executeByField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                     ],
                                   height: 16,
                                   color: Colors.grey[200],
                                 ),
-                                BlocBuilder<MediaHelperBloc, MediaHelperState>(
-                                    builder: (context, state) {
+                                BlocBuilder<MediaHelperBloc, MediaHelperState>(builder: (context, state) {
                                   if (state is MediaHelperSuccess) {
-                                    print("length: " +
-                                        state.items.length.toString());
+                                    print("length: " + state.items.length.toString());
                                     return WidgetMediaPicker(
                                         currentItems: state.items,
-                                        onChangeFiles: (newPathFiles,
-                                            deletePathFiles) async {
-                                          Get.find<ChangeFileController>()
-                                              .change(newPathFiles,
-                                                  deletePathFiles);
+                                        onChangeFiles: (newPathFiles, deletePathFiles) async {
+                                          Get.find<ChangeFileController>().change(newPathFiles, deletePathFiles);
                                         });
                                   } else {
-                                    return Center(
-                                        child: CircularProgressIndicator());
+                                    return const Center(child: CircularProgressIndicator());
                                   }
                                 }),
                                 Padding(
                                   child: ButtonWidget(
                                       title: 'CẬP NHẬT',
                                       onPressed: () {
-                                        FocusScopeNode currentFocus =
-                                            FocusScope.of(context);
+                                        var currentFocus = FocusScope.of(context);
                                         if (!currentFocus.hasPrimaryFocus) {
                                           currentFocus.unfocus();
                                         }

lib/presentation/screens/actions/disease/sc_edit_action_disease.dart

 class EditActionDiseaseScreen extends StatefulWidget {
   final int cropId;
   final bool isEdit;
-  final int activityId;
-  EditActionDiseaseScreen(
-      {@required this.cropId, this.isEdit = false, this.activityId});
+  final int? activityId;
+  EditActionDiseaseScreen({required this.cropId, this.isEdit = false, this.activityId});
   @override
-  _EditActionDiseaseScreenState createState() =>
-      _EditActionDiseaseScreenState();
+  _EditActionDiseaseScreenState createState() => _EditActionDiseaseScreenState();
 }
 
 class _EditActionDiseaseScreenState extends State<EditActionDiseaseScreen> {
-  final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
+  final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
   final _repository = Repository();
   GlobalKey<FormState> _formKey = GlobalKey();
   bool _autoValidate = false;
   final _executeByController = TextEditingController();
 
   DateTime executeTime = DateTime.now();
-  List<String> filePaths = List<String>();
+  List<String> filePaths = <String>[];
   var changeFileController = Get.put(ChangeFileController());
 
   Future<Null> getSharedPrefs() async {
   }
 
   _validateInputs() async {
-    if (_formKey.currentState.validate()) {
-      _formKey.currentState.save();
+    if (_formKey.currentState!.validate()) {
+      _formKey.currentState!.save();
       LoadingDialog.showLoadingDialog(context);
       filePaths = Get.find<ChangeFileController>().newFiles;
       //Create request general model
       try {
-        RequestDisease requestDisease = RequestDisease()
+        var requestDisease = RequestDisease()
           ..cropId = _disease.cropId
           ..activityId = _disease.activityId
           ..description = _disease.description
           ..executeDate = _disease.executeDate;
-        var generalDetail = List<ObjectUpdateDetail>();
+        var generalDetail = <ObjectUpdateDetail>[];
         generalDetail.add(ObjectUpdateDetail()
           ..name = "LOAI_DICH_HAI"
           ..index = _disease.typesOfPest);
     return WidgetFieldDateTimePicker(
         initDateTime: executeTime,
         onUpdateDateTime: (selectedDate) {
-          _disease.executeDate =
-              selectedDate.convertLocalDateTimeToStringUtcDateTime();
+          _disease.executeDate = selectedDate.convertLocalDateTimeToStringUtcDateTime();
         });
   }
 
   Widget _typeOfPestField() {
     return TextFormField(
       keyboardType: TextInputType.text,
-      decoration: InputDecoration(labelText: "Loại dịch hại *"),
+      decoration: const InputDecoration(labelText: "Loại dịch hại *"),
       controller: _typesOfPestController,
-      validator: (String value) {
-        return Validators.validateNotNullOrEmpty(
-            value, label_validate_input_empty);
+      validator: (value) {
+        return Validators.validateNotNullOrEmpty(value!, label_validate_input_empty);
       },
       onSaved: (newValue) {
-        _disease.typesOfPest = newValue;
+        _disease.typesOfPest = newValue!;
       },
     );
   }
   Widget _harmLevelField() {
     return TextFormField(
       keyboardType: TextInputType.text,
-      decoration: InputDecoration(labelText: "Mức độ gây hại"),
+      decoration: const InputDecoration(labelText: "Mức độ gây hại"),
       controller: _harmLevelController,
       onSaved: (newValue) {
-        _disease.harmLevel = newValue;
+        _disease.harmLevel = newValue!;
       },
     );
   }
       hintValue: "% cây",
       textController: _treePercentController,
       onSaved: (newValue) {
-        _disease.treePercent = newValue;
+        _disease.treePercent = newValue ?? '';
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
   Widget _locationField() {
     return TextFormField(
       keyboardType: TextInputType.text,
-      decoration: InputDecoration(labelText: "Vị trí"),
+      decoration: const InputDecoration(labelText: "Vị trí"),
       controller: _locationController,
       onSaved: (newValue) {
-        _disease.location = newValue;
+        _disease.location = newValue!;
       },
     );
   }
   Widget _naturalEnemyField() {
     return TextFormField(
       keyboardType: TextInputType.text,
-      decoration: InputDecoration(labelText: "Thiên địch"),
+      decoration: const InputDecoration(labelText: "Thiên địch"),
       controller: _naturalEnemyController,
       onSaved: (newValue) {
-        _disease.naturalEnemy = newValue;
+        _disease.naturalEnemy = newValue!;
       },
     );
   }
   Widget _treatmentMeasuresField() {
     return TextFormField(
       keyboardType: TextInputType.text,
-      decoration: InputDecoration(labelText: "Biện pháp xử lý"),
+      decoration: const InputDecoration(labelText: "Biện pháp xử lý"),
       controller: _treatmentMeasuresController,
       onSaved: (newValue) {
-        _disease.treatmentMeasures = newValue;
+        _disease.treatmentMeasures = newValue!;
       },
     );
   }
   Widget _executeByField() {
     return TextFormField(
       keyboardType: TextInputType.text,
-      decoration: InputDecoration(labelText: "Người thực hiện"),
+      decoration: const InputDecoration(labelText: "Người thực hiện"),
       enabled: false,
       controller: _executeByController,
       onSaved: (newValue) {},
               appBar: AppBarWidget(
                 isBack: true,
                 action: InkWell(
-                  child: Text(
+                  child: const Text(
                     'Huỷ',
-                    style: TextStyle(
-                        color: Colors.red, fontWeight: FontWeight.normal),
+                    style: TextStyle(color: Colors.red, fontWeight: FontWeight.normal),
                   ),
                   onTap: () {
                     if (Get.isSnackbarOpen) Get.back();
                   child: MultiBlocProvider(
                 providers: [
                   BlocProvider<ActionDetailBloc>(
-                      create: (context) =>
-                          ActionDetailBloc(repository: Repository())
-                            ..add(FetchData(
-                                isNeedFetchData: widget.isEdit,
-                                apiActivity: ConstCommon.apiDetailDisease,
-                                activityId: widget.activityId))),
+                    create: (context) => ActionDetailBloc(repository: Repository())
+                      ..add(
+                        FetchData(
+                          isNeedFetchData: widget.isEdit,
+                          apiActivity: ConstCommon.apiDetailDisease,
+                          activityId: widget.activityId ?? 0,
+                        ),
+                      ),
+                  ),
                   BlocProvider<MediaHelperBloc>(
-                    create: (context) =>
-                        MediaHelperBloc()..add(ChangeListMedia(items: [])),
+                    create: (context) => MediaHelperBloc()..add(ChangeListMedia(items: [])),
                   )
                 ],
                 child: Form(
                     key: _formKey,
-                    autovalidate: _autoValidate,
+                    // autovalidate: _autoValidate,
                     child: SafeArea(
                       child: SingleChildScrollView(
-                        child:
-                            BlocConsumer<ActionDetailBloc, ActionDetailState>(
+                        child: BlocConsumer<ActionDetailBloc, ActionDetailState>(
                           listener: (context, state) async {
                             if (state is ActionDetailFailure) {
                               LoadingDialog.hideLoadingDialog(context);
                               LoadingDialog.hideLoadingDialog(context);
                               print(state.item);
                               _disease = Disease.fromJson(state.item);
-                              _disease.activityId = widget.activityId;
-                              _typesOfPestController.text =
-                                  _disease.typesOfPest ?? "";
-                              _harmLevelController.text =
-                                  _disease.harmLevel ?? "";
-                              _treePercentController.text = _disease.treePercent
-                                  .formatStringToStringDecimal();
-                              _locationController.text =
-                                  _disease.location ?? "";
-                              _naturalEnemyController.text =
-                                  _disease.naturalEnemy ?? "";
-                              _treatmentMeasuresController.text =
-                                  _disease.treatmentMeasures ?? "";
-                              _descriptionController.text =
-                                  _disease.description ?? "";
-                              _executeByController.text = _disease.executeBy;
+                              _disease.activityId = widget.activityId ?? 0;
+                              _typesOfPestController.text = _disease.typesOfPest ?? "";
+                              _harmLevelController.text = _disease.harmLevel ?? "";
+                              _treePercentController.text = _disease.treePercent?.formatStringToStringDecimal() ?? '';
+                              _locationController.text = _disease.location ?? "";
+                              _naturalEnemyController.text = _disease.naturalEnemy ?? "";
+                              _treatmentMeasuresController.text = _disease.treatmentMeasures ?? "";
+                              _descriptionController.text = _disease.description ?? "";
+                              _executeByController.text = _disease.executeBy ?? '';
 
-                              Get.find<ChangeDateTimePicker>().change(_disease
-                                  .executeDate
-                                  .convertStringServerDateTimeToLocalDateTime());
+                              Get.find<ChangeDateTimePicker>().change(
+                                _disease.executeDate?.convertStringServerDateTimeToLocalDateTime() ?? DateTime.now(),
+                              );
                               //Show media
-                              if (Validators.stringNotNullOrEmpty(
-                                  _disease.media)) {
-                                BlocProvider.of<MediaHelperBloc>(context).add(
-                                    ChangeListMedia(
-                                        items:
-                                            UtilAction.convertFilePathToMedia(
-                                                _disease.media)));
+                              if (Validators.stringNotNullOrEmpty(_disease.media ?? '')) {
+                                BlocProvider.of<MediaHelperBloc>(context)
+                                    .add(ChangeListMedia(items: UtilAction.convertFilePathToMedia(_disease.media ?? '')));
                               }
                             } else if (state is ActionDetailInitial) {
                             } else if (state is ActionDetailLoading) {
                                 Padding(
                                   padding: const EdgeInsets.all(8.0),
                                   child: Column(
-                                    crossAxisAlignment:
-                                        CrossAxisAlignment.start,
+                                    crossAxisAlignment: CrossAxisAlignment.start,
                                     children: <Widget>[
-                                      Text(
+                                      const Text(
                                         plot_action_disease,
-                                        style: TextStyle(
-                                            fontWeight: FontWeight.w500,
-                                            fontSize: 22),
+                                        style: TextStyle(fontWeight: FontWeight.w500, fontSize: 22),
                                       ),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       Container(
                                         width: double.infinity,
-                                        child: Text(
+                                        child: const Text(
                                           "Ngày thực hiện *",
-                                          style: TextStyle(
-                                              color: Colors.black54,
-                                              fontSize: 13.0),
+                                          style: TextStyle(color: Colors.black54, fontSize: 13.0),
                                         ),
                                       ),
                                       _btnExecuteTimePicker(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _typeOfPestField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _harmLevelField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _treePercentField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _locationField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _naturalEnemyField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _treatmentMeasuresField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _descriptionField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _executeByField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                     ],
                                   height: 16,
                                   color: Colors.grey[200],
                                 ),
-                                BlocBuilder<MediaHelperBloc, MediaHelperState>(
-                                    builder: (context, state) {
+                                BlocBuilder<MediaHelperBloc, MediaHelperState>(builder: (context, state) {
                                   if (state is MediaHelperSuccess) {
                                     return WidgetMediaPicker(
                                         currentItems: state.items,
-                                        onChangeFiles: (newPathFiles,
-                                            deletePathFiles) async {
-                                          Get.find<ChangeFileController>()
-                                              .change(newPathFiles,
-                                                  deletePathFiles);
+                                        onChangeFiles: (newPathFiles, deletePathFiles) async {
+                                          Get.find<ChangeFileController>().change(newPathFiles, deletePathFiles);
                                         });
                                   } else {
-                                    return Center(
-                                        child: CircularProgressIndicator());
+                                    return const Center(child: CircularProgressIndicator());
                                   }
                                 }),
                                 Padding(
                                   child: ButtonWidget(
                                       title: 'CẬP NHẬT',
                                       onPressed: () {
-                                        FocusScopeNode currentFocus =
-                                            FocusScope.of(context);
+                                        var currentFocus = FocusScope.of(context);
                                         if (!currentFocus.hasPrimaryFocus) {
                                           currentFocus.unfocus();
                                         }

lib/presentation/screens/actions/dung/sc_edit_action_dung.dart

 class EditActionDungScreen extends StatefulWidget {
   final int cropId;
   final bool isEdit;
-  final int activityId;
-  EditActionDungScreen(
-      {@required this.cropId, this.isEdit = false, this.activityId});
+  final int? activityId;
+  EditActionDungScreen({required this.cropId, this.isEdit = false, this.activityId});
   @override
   _EditActionDungScreenState createState() => _EditActionDungScreenState();
 }
 
 class _EditActionDungScreenState extends State<EditActionDungScreen> {
-  final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
+  final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
   final _repository = Repository();
   GlobalKey<FormState> _formKey = GlobalKey();
   bool _autoValidate = false;
   final _weatherController = TextEditingController();
   final _executeByController = TextEditingController();
   final _quarantinePeriodController = TextEditingController();
-  List<SuppliesUsing> suppliesUsing = new List<SuppliesUsing>();
+  List<SuppliesUsing> suppliesUsing = <SuppliesUsing>[];
 
   DateTime executeTime = DateTime.now();
-  List<String> filePaths = List<String>();
+  List<String> filePaths = <String>[];
   var changeFileController = Get.put(ChangeFileController());
 
   Future<Null> getSharedPrefs() async {
     super.initState();
     getSharedPrefs();
     changeFileController.initValue();
-    _dung.suppliesUsing = new List<SuppliesUsing>();
+    _dung.suppliesUsing = <SuppliesUsing>[];
     _dung.cropId = widget.cropId;
   }
 
   _validateInputs() async {
-    if (_formKey.currentState.validate()) {
-      _formKey.currentState.save();
+    if (_formKey.currentState!.validate()) {
+      _formKey.currentState!.save();
       LoadingDialog.showLoadingDialog(context);
       filePaths = Get.find<ChangeFileController>().newFiles;
-      List<SuppliesUsing> newSups = [];
+      var newSups = <SuppliesUsing>[];
       suppliesUsing.forEach((sup) {
         var newSup = sup;
         newSup.suppliesInWarehouseId = sup.tbSuppliesInWarehouseId;
         }, (error) {
           LoadingDialog.hideLoadingDialog(context);
           Utils.showSnackBarError(message: AppException.handleError(error));
-        },
-            apiAddAction: ConstCommon.apiAddDung,
-            paramActivity: ConstCommon.paramsActionDung,
-            activityAction: activityDung,
-            filePaths: filePaths);
+        }, apiAddAction: ConstCommon.apiAddDung, paramActivity: ConstCommon.paramsActionDung, activityAction: activityDung, filePaths: filePaths);
       } else {
         //UPDATE
         _repository.updateAction((value) {
     return WidgetFieldDateTimePicker(
         initDateTime: executeTime,
         onUpdateDateTime: (selectedDate) {
-          _dung.executeDate =
-              selectedDate.convertLocalDateTimeToStringUtcDateTime();
+          _dung.executeDate = selectedDate.convertLocalDateTimeToStringUtcDateTime();
         });
   }
 
   Widget _purposeField() {
     return TextFormField(
       keyboardType: TextInputType.text,
-      decoration: InputDecoration(labelText: "Lý do sử dụng"),
+      decoration: const InputDecoration(labelText: "Lý do sử dụng"),
       controller: _purposeController,
       onSaved: (newValue) {
-        _dung.purpose = newValue;
+        _dung.purpose = newValue ?? '';
       },
     );
   }
       hintValue: "Thời gian cách ly",
       textController: _quarantinePeriodController,
       onSaved: (newValue) {
-        _dung.quarantinePeriod = newValue.parseDoubleThousand();
+        _dung.quarantinePeriod = (newValue ?? '0').parseDoubleThousand();
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
   Widget _weatherField() {
     return TextFormField(
       keyboardType: TextInputType.text,
-      decoration: InputDecoration(labelText: "Thời tiết"),
+      decoration: const InputDecoration(labelText: "Thời tiết"),
       controller: _weatherController,
       onSaved: (newValue) {
-        _dung.weatherConditions = newValue;
+        _dung.weatherConditions = newValue ?? '';
       },
     );
   }
   Widget _executeByField() {
     return TextFormField(
       keyboardType: TextInputType.text,
-      decoration: InputDecoration(labelText: "Người thực hiện"),
+      decoration: const InputDecoration(labelText: "Người thực hiện"),
       enabled: false,
       controller: _executeByController,
       onSaved: (newValue) {},
               appBar: AppBarWidget(
                 isBack: true,
                 action: InkWell(
-                  child: Text(
+                  child: const Text(
                     'Huỷ',
-                    style: TextStyle(
-                        color: Colors.red, fontWeight: FontWeight.normal),
+                    style: TextStyle(color: Colors.red, fontWeight: FontWeight.normal),
                   ),
                   onTap: () {
                     if (Get.isSnackbarOpen) Get.back();
                   child: MultiBlocProvider(
                       providers: [
                     BlocProvider<ActionDetailBloc>(
-                        create: (context) =>
-                            ActionDetailBloc(repository: Repository())
-                              ..add(FetchData(
-                                  isNeedFetchData: widget.isEdit,
-                                  apiActivity: ConstCommon.apiDetailDung,
-                                  activityId: widget.activityId))),
+                      create: (context) => ActionDetailBloc(repository: Repository())
+                        ..add(
+                          FetchData(isNeedFetchData: widget.isEdit, apiActivity: ConstCommon.apiDetailDung, activityId: widget.activityId ?? -1),
+                        ),
+                    ),
                     BlocProvider<MediaHelperBloc>(
-                      create: (context) =>
-                          MediaHelperBloc()..add(ChangeListMedia(items: [])),
+                      create: (context) => MediaHelperBloc()..add(ChangeListMedia(items: [])),
                     )
                   ],
                       child: Form(
                           key: _formKey,
-                          autovalidate: _autoValidate,
+                          // autovalidate: _autoValidate,
                           child: SafeArea(
                             child: SingleChildScrollView(
-                              child: BlocConsumer<ActionDetailBloc,
-                                  ActionDetailState>(
+                              child: BlocConsumer<ActionDetailBloc, ActionDetailState>(
                                 listener: (context, state) async {
                                   if (state is ActionDetailFailure) {
                                     LoadingDialog.hideLoadingDialog(context);
                                   } else if (state is ActionDetailSuccess) {
                                     LoadingDialog.hideLoadingDialog(context);
                                     _dung = Dung.fromJson(state.item);
-                                    _dung.activityId = widget.activityId;
-                                    _purposeController.text =
-                                        _dung.purpose ?? "";
-                                    _quarantinePeriodController.text = _dung
-                                        .quarantinePeriod
-                                        .formatNumtoStringDecimal();
-                                    _weatherController.text =
-                                        _dung.weatherConditions ?? "";
-                                    _descriptionController.text =
-                                        _dung.description;
-                                    _executeByController.text = _dung.executeBy;
-                                    Get.find<ChangeDateTimePicker>().change(_dung
-                                        .executeDate
-                                        .convertStringServerDateTimeToLocalDateTime());
+                                    _dung.activityId = widget.activityId ?? -1;
+                                    _purposeController.text = _dung.purpose ?? "";
+                                    _quarantinePeriodController.text = _dung.quarantinePeriod?.formatNumtoStringDecimal() ?? '';
+                                    _weatherController.text = _dung.weatherConditions ?? "";
+                                    _descriptionController.text = _dung.description ?? '';
+                                    _executeByController.text = _dung.executeBy ?? '';
+                                    Get.find<ChangeDateTimePicker>().change(
+                                      _dung.executeDate?.convertStringServerDateTimeToLocalDateTime() ?? DateTime.now(),
+                                    );
                                     //Show media
-                                    if (Validators.stringNotNullOrEmpty(
-                                        _dung.media)) {
+                                    if (Validators.stringNotNullOrEmpty(_dung.media ?? '')) {
                                       BlocProvider.of<MediaHelperBloc>(context)
-                                          .add(ChangeListMedia(
-                                              items: UtilAction
-                                                  .convertFilePathToMedia(
-                                                      _dung.media)));
+                                          .add(ChangeListMedia(items: UtilAction.convertFilePathToMedia(_dung.media ?? '')));
                                     }
                                     //list supply
-                                    suppliesUsing = _dung.suppliesUsing;
-                                    Get.find<ChangeSupplyUsing>()
-                                        .changeInitList(suppliesUsing);
+                                    suppliesUsing = _dung.suppliesUsing ?? <SuppliesUsing>[];
+                                    Get.find<ChangeSupplyUsing>().changeInitList(suppliesUsing);
                                   } else if (state is ActionDetailInitial) {
                                     print("init");
                                   } else if (state is ActionDetailLoading) {
                                       Padding(
                                         padding: const EdgeInsets.all(8.0),
                                         child: Column(
-                                          crossAxisAlignment:
-                                              CrossAxisAlignment.start,
+                                          crossAxisAlignment: CrossAxisAlignment.start,
                                           children: <Widget>[
-                                            Text(
+                                            const Text(
                                               plot_action_dung,
-                                              style: TextStyle(
-                                                  fontWeight: FontWeight.w500,
-                                                  fontSize: 22),
+                                              style: TextStyle(fontWeight: FontWeight.w500, fontSize: 22),
                                             ),
-                                            SizedBox(
+                                            const SizedBox(
                                               height: 8.0,
                                             ),
                                             Container(
                                               width: double.infinity,
-                                              child: Text(
+                                              child: const Text(
                                                 "Ngày thực hiện *",
-                                                style: TextStyle(
-                                                    color: Colors.black54,
-                                                    fontSize: 13.0),
+                                                style: TextStyle(color: Colors.black54, fontSize: 13.0),
                                               ),
                                             ),
                                             _btnExecuteTimePicker(),
-                                            SizedBox(
+                                            const SizedBox(
                                               height: 8.0,
                                             ),
                                             _purposeField(),
-                                            SizedBox(
+                                            const SizedBox(
                                               height: 8.0,
                                             ),
                                             _quarantinePeriodField(),
-                                            SizedBox(
+                                            const SizedBox(
                                               height: 8.0,
                                             ),
                                             _weatherField(),
-                                            SizedBox(
+                                            const SizedBox(
                                               height: 8.0,
                                             ),
                                             _desciptionField(),
-                                            SizedBox(
+                                            const SizedBox(
                                               height: 8.0,
                                             ),
                                             _executeByField(),
-                                            SizedBox(
+                                            const SizedBox(
                                               height: 8.0,
                                             ),
                                           ],
                                         height: 16,
                                         color: Colors.grey[200],
                                       ),
-                                      BlocBuilder<MediaHelperBloc,
-                                              MediaHelperState>(
-                                          builder: (context, state) {
+                                      BlocBuilder<MediaHelperBloc, MediaHelperState>(builder: (context, state) {
                                         if (state is MediaHelperSuccess) {
                                           return WidgetMediaPicker(
                                               currentItems: state.items,
-                                              onChangeFiles: (newPathFiles,
-                                                  deletePathFiles) async {
-                                                Get.find<ChangeFileController>()
-                                                    .change(newPathFiles,
-                                                        deletePathFiles);
+                                              onChangeFiles: (newPathFiles, deletePathFiles) async {
+                                                Get.find<ChangeFileController>().change(newPathFiles, deletePathFiles);
                                               });
                                         } else {
-                                          return Center(
-                                              child:
-                                                  CircularProgressIndicator());
+                                          return const Center(child: CircularProgressIndicator());
                                         }
                                       }),
                                       Padding(
                                         child: ButtonWidget(
                                             title: 'CẬP NHẬT',
                                             onPressed: () {
-                                              FocusScopeNode currentFocus =
-                                                  FocusScope.of(context);
-                                              if (!currentFocus
-                                                  .hasPrimaryFocus) {
+                                              var currentFocus = FocusScope.of(context);
+                                              if (!currentFocus.hasPrimaryFocus) {
                                                 currentFocus.unfocus();
                                               }
-                                              if (Get.find<
-                                                      ChangeFieldFormSupply>()
-                                                  .isChanged) {
-                                                Utils.showDialogConfirmSupply(
-                                                    onConfirm: () {
+                                              if (Get.find<ChangeFieldFormSupply>().isChanged) {
+                                                Utils.showDialogConfirmSupply(onConfirm: () {
                                                   Get.back();
                                                   _validateInputs();
                                                 });

lib/presentation/screens/actions/dung/widget_dung_supply.dart

 class WidgetDungSupply extends StatefulWidget {
   final List<SuppliesUsing> currentItems;
   final Function(List<SuppliesUsing> supplyChanges) onChangeSupplies;
-  WidgetDungSupply({this.currentItems, @required this.onChangeSupplies});
+  WidgetDungSupply({required this.currentItems, required this.onChangeSupplies});
   @override
   _WidgetDungSupplyState createState() => _WidgetDungSupplyState();
 }
         return Container(
             height: 120,
             child: ListView.builder(
-                physics: ClampingScrollPhysics(),
+                physics: const ClampingScrollPhysics(),
                 scrollDirection: Axis.horizontal,
                 shrinkWrap: true,
                 itemCount: value.currentItems.length,
                           ..name = editedSupplyUsing.equipmentName;
                         changeSelectedDevice.change(editedDevice);
 
-                        changeUnit
-                            .updateListByUnitName(editedSupplyUsing.supplyUnit);
-                        changeUnit.updateSelected(editedSupplyUsing.supplyUnit);
-                        _dosageController.text = editedSupplyUsing.dosage;
-                        _howToUseController.text = editedSupplyUsing.howToUse;
-                        _quantityController.text = editedSupplyUsing.quantity
-                            .formatNumtoStringDecimal();
+                        changeUnit.updateListByUnitName(editedSupplyUsing.supplyUnit ?? '');
+                        changeUnit.updateSelected(editedSupplyUsing.supplyUnit ?? '');
+                        _dosageController.text = editedSupplyUsing.dosage ?? '';
+                        _howToUseController.text = editedSupplyUsing.howToUse ?? '';
+                        _quantityController.text = editedSupplyUsing.quantity?.formatNumtoStringDecimal() ?? '';
                       },
                       child: Card(
                           child: Stack(
                         alignment: Alignment.bottomCenter,
-                        overflow: Overflow.visible,
+                        // overflow: Overflow.visible,
                         children: <Widget>[
                           Positioned(
                               child: ClipRRect(
                             borderRadius: BorderRadius.circular(8),
                             child: Container(
-                              padding: EdgeInsets.all(4),
+                              padding: const EdgeInsets.all(4),
                               width: 150,
                               child: Column(
                                 crossAxisAlignment: CrossAxisAlignment.center,
                                 mainAxisAlignment: MainAxisAlignment.center,
                                 children: [
-                                  SizedBox(
+                                  const SizedBox(
                                     height: 12.0,
                                   ),
                                   Flexible(
-                                    child: Text(
-                                        value.currentItems[index].supplyName ??
-                                            "",
-                                        overflow: TextOverflow.ellipsis,
-                                        maxLines: 1),
+                                    child: Text(value.currentItems[index].supplyName ?? "", overflow: TextOverflow.ellipsis, maxLines: 1),
                                   ),
-                                  Validators.stringNotNullOrEmpty(
-                                          value.currentItems[index].dosage)
+                                  Validators.stringNotNullOrEmpty(value.currentItems[index].dosage ?? '')
+                                      ? Flexible(child: Text("${value.currentItems[index].dosage ?? ""}"))
+                                      : const SizedBox(),
+                                  Validators.stringNotNullOrEmpty(value.currentItems[index].quantity?.formatNumtoStringDecimal() ?? '')
                                       ? Flexible(
                                           child: Text(
-                                              "${value.currentItems[index].dosage ?? ""}"))
-                                      : SizedBox(),
-                                  Validators.stringNotNullOrEmpty(value
-                                          .currentItems[index].quantity
-                                          .formatNumtoStringDecimal())
-                                      ? Flexible(
-                                          child: Text(
-                                              "${value.currentItems[index].quantity.formatNumtoStringDecimal() ?? ""} ${value.currentItems[index].supplyUnit ?? ""}"))
-                                      : SizedBox(),
-                                  Validators.stringNotNullOrEmpty(value
-                                          .currentItems[index].equipmentName)
-                                      ? Flexible(
-                                          child: Text(
-                                              "${value.currentItems[index].equipmentName ?? ""}"))
-                                      : SizedBox(),
-                                  Validators.stringNotNullOrEmpty(
-                                          value.currentItems[index].howToUse)
-                                      ? Flexible(
-                                          child: Text(
-                                              "${value.currentItems[index].howToUse ?? ""}"))
-                                      : SizedBox(),
+                                              "${value.currentItems[index].quantity?.formatNumtoStringDecimal() ?? ""} ${value.currentItems[index].supplyUnit ?? ""}"))
+                                      : const SizedBox(),
+                                  Validators.stringNotNullOrEmpty(value.currentItems[index].equipmentName ?? '')
+                                      ? Flexible(child: Text("${value.currentItems[index].equipmentName ?? ""}"))
+                                      : const SizedBox(),
+                                  Validators.stringNotNullOrEmpty(value.currentItems[index].howToUse ?? '')
+                                      ? Flexible(child: Text("${value.currentItems[index].howToUse ?? ""}"))
+                                      : const SizedBox(),
                                 ],
                               ),
                             ),
                             top: -10,
                             right: -10,
                             child: IconButton(
-                                icon: Icon(
+                                icon: const Icon(
                                   Icons.cancel,
                                   color: Colors.redAccent,
                                 ),
   Widget _btnSelectSubstrates() {
     return GetBuilder<ChangeSupply>(builder: (data) {
       return FlatButton(
-          padding:
-              EdgeInsets.only(top: 0.0, right: 0.0, bottom: 0.0, left: 0.0),
+          padding: const EdgeInsets.only(top: 0.0, right: 0.0, bottom: 0.0, left: 0.0),
           onPressed: () {
             var currentIndexEdit = changeSupplyUsing.currentIndex;
             Navigator.of(context)
                           type: ConstCommon.supplyTypeDung,
                           selectedId: changeSelectedSupply.selectedSupplyId,
                           currentItems: changeSupplyUsing.currentItems,
-                          currentEditId: (currentIndexEdit >= 0)
-                              ? changeSupplyUsing.currentItems[currentIndexEdit]
-                                  .tbSuppliesInWarehouseId
-                              : -1,
+                          currentEditId:
+                              (currentIndexEdit >= 0) ? changeSupplyUsing.currentItems[currentIndexEdit].tbSuppliesInWarehouseId ?? -1 : -1,
                         ),
                     fullscreenDialog: false))
                 .then((value) {
               if (value != null) {
                 var result = value as Supply;
                 changeSelectedSupply.change(result);
-                changeUnit.updateListByUnitName(result.unit);
+                changeUnit.updateListByUnitName(result.unit ?? '');
                 changeFormField.change(true);
               }
             });
               crossAxisAlignment: CrossAxisAlignment.start,
               children: [
                 Container(
-                    padding: EdgeInsets.only(
-                        top: 0.0, right: 0.0, bottom: 10.5, left: 0.0),
+                    padding: const EdgeInsets.only(top: 0.0, right: 0.0, bottom: 10.5, left: 0.0),
                     decoration: BoxDecoration(
                       border: Border(
-                          bottom: BorderSide(
-                              width: 1,
-                              color: isValid ? Colors.grey : Colors.red[900])),
+                        bottom: BorderSide(
+                          width: 1,
+                          color: isValid ? Colors.grey : Colors.red,
+                        ),
+                      ),
                     ),
                     child: Column(
                       crossAxisAlignment: CrossAxisAlignment.start,
                       children: [
                         Text(
                           'Tên thương mại *',
-                          style: TextStyle(
-                              fontSize: 13,
-                              fontWeight: FontWeight.normal,
-                              color:
-                                  isValid ? Colors.black54 : Colors.red[600]),
+                          style: TextStyle(fontSize: 13, fontWeight: FontWeight.normal, color: isValid ? Colors.black54 : Colors.red[600]),
                         ),
                         Row(
                           children: [
                             Expanded(
-                                child: Text(
-                                    changeSelectedSupply.selectedSupplyName ??
-                                        "Tên thương mại",
-                                    style: TextStyle(
-                                        fontSize: 14.0,
-                                        color: Colors.black87))),
-                            Icon(
+                                child: Text(changeSelectedSupply.selectedSupplyName ?? "Tên thương mại",
+                                    style: const TextStyle(fontSize: 14.0, color: Colors.black87))),
+                            const Icon(
                               Icons.arrow_drop_down,
                               color: Colors.grey,
                             ),
                         )
                       ],
                     )),
-                isValid ? SizedBox() : WidgetErrorTextField()
+                isValid ? const SizedBox() : WidgetErrorTextField()
               ],
             );
           }));
   Widget _btnSelectDevice() {
     return GetBuilder<ChangeDevice>(builder: (data) {
       return FlatButton(
-          padding:
-              EdgeInsets.only(top: 0.0, right: 0.0, bottom: 0.0, left: 0.0),
+          padding: const EdgeInsets.only(top: 0.0, right: 0.0, bottom: 0.0, left: 0.0),
           onPressed: () {
             Navigator.of(context)
-                .push(MaterialPageRoute(
-                    builder: (_) => ListDeviceActivity(
-                        selectedId: changeSelectedDevice.selectedDeviceId),
-                    fullscreenDialog: false))
+                .push(
+                    MaterialPageRoute(builder: (_) => ListDeviceActivity(selectedId: changeSelectedDevice.selectedDeviceId), fullscreenDialog: false))
                 .then((value) {
               if (value != null) {
                 var result = value as Device;
             });
           },
           child: Container(
-              padding: EdgeInsets.only(
-                  top: 0.0, right: 0.0, bottom: 10.5, left: 0.0),
-              decoration: BoxDecoration(
+              padding: const EdgeInsets.only(top: 0.0, right: 0.0, bottom: 10.5, left: 0.0),
+              decoration: const BoxDecoration(
                 border: kBorderTextField,
               ),
               child: Row(
                 children: [
                   GetBuilder<ChangeSupply>(
                       builder: (_) => Expanded(
-                          child: Text(
-                              changeSelectedDevice.selectedDeviceName ??
-                                  "Thiết bị",
-                              style: TextStyle(
-                                  fontSize: 14.0, color: Colors.black87)))),
-                  Icon(
+                          child: Text(changeSelectedDevice.selectedDeviceName ?? "Thiết bị",
+                              style: const TextStyle(fontSize: 14.0, color: Colors.black87)))),
+                  const Icon(
                     Icons.arrow_drop_down,
                     color: Colors.grey,
                   ),
             var oldSelected = data.selectedUnit;
             if (oldSelected == value) {
             } else {
-              assignValue = UtilAction.convertUnit(
-                  inputValue: assignValue,
-                  oldUnit: oldSelected,
-                  newUnit: value);
+              assignValue = UtilAction.convertUnit(inputValue: assignValue, oldUnit: oldSelected, newUnit: value ?? '');
             }
             _quantityController.text = assignValue.formatNumtoStringDecimal();
           }
-          changeUnit.updateSelected(value);
+          changeUnit.updateSelected(value ?? '');
         },
       );
     });
     return WidgetTextFormFieldNumber(
       hintValue: "Tổng lượng sử dụng *",
       textController: _quantityController,
-      validator: (String value) {
-        return Validators.validateNotNullOrEmpty(
-            value, label_validate_input_empty);
+      validator: (String? value) {
+        // return Validators.validateNotNullOrEmpty(value, label_validate_input_empty);
       },
       onChanged: (value) {
         if (!Validators.stringNotNullOrEmpty(value) &&
           changeFormField.change(true);
         }
       },
+      onSaved: (_) {},
     );
   }
 
         mainAxisAlignment: MainAxisAlignment.spaceBetween,
         children: [
           _.isEdit
-              ? OutlineButton(
-                  shape: RoundedRectangleBorder(
-                      borderRadius: new BorderRadius.circular(8.0)),
-                  child: Text("Huỷ"),
-                  onPressed: () {
+              ? InkWell(
+                  // shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8.0)),
+                  child: const Text("Huỷ"),
+                  onTap: () {
                     changeButton.resetValue();
                     _resetForm();
                     _hidenKeyboard(context);
                   })
-              : SizedBox(),
+              : const SizedBox(),
           _.isEdit
               ? Expanded(
                   child: FlatButton(
                       onPressed: () {
-                        if (_formSupplyKey.currentState.validate()) {
-                          _formSupplyKey.currentState.save();
+                        if (_formSupplyKey.currentState!.validate()) {
+                          _formSupplyKey.currentState!.save();
                           if (changeSelectedSupply.selectedSupplyId <= 0) {
                             changeSelectedSupply.changeValid(false);
                           } else {
                             changeSelectedSupply.changeValid(true);
                           }
-                          var currentSupply =
-                              changeSelectedSupply.currentSupply;
-                          var currentDevice =
-                              changeSelectedDevice.currentDevice;
-                          var currentQuantity =
-                              _quantityController.text.parseDoubleThousand();
-                          if (currentSupply.id != null &&
-                              (currentQuantity ?? 0) > 0) {
-                            var quantityWithCurrentSupplyUnit =
-                                UtilAction.convertUnit(
-                                    inputValue: currentQuantity,
-                                    oldUnit: changeUnit.selectedUnit,
-                                    newUnit: changeSelectedSupply
-                                        .currentSupply.unit);
-                            SuppliesUsing newSup = SuppliesUsing()
+                          var currentSupply = changeSelectedSupply.currentSupply;
+                          var currentDevice = changeSelectedDevice.currentDevice;
+                          var currentQuantity = _quantityController.text.parseDoubleThousand();
+                          if (currentSupply.id != null && (currentQuantity ?? 0) > 0) {
+                            var quantityWithCurrentSupplyUnit = UtilAction.convertUnit(
+                              inputValue: currentQuantity,
+                              oldUnit: changeUnit.selectedUnit,
+                              newUnit: changeSelectedSupply.currentSupply.unit ?? '',
+                            );
+                            var newSup = SuppliesUsing()
                               ..dosage = _dosageController.text
                               ..howToUse = _howToUseController.text
                               ..quantity = quantityWithCurrentSupplyUnit
                               ..equipmentName = currentDevice.name
                               ..supplyUnit = currentSupply.unit
                               ..unit = currentSupply.unit;
-                            changeSupplyUsing.editSupply(
-                                changeSupplyUsing.currentIndex, newSup);
+                            changeSupplyUsing.editSupply(changeSupplyUsing.currentIndex, newSup);
                             _resetForm();
                             _hidenKeyboard(context);
-                          } else if (currentSupply.id == null ||
-                              ((currentQuantity ?? 0) <= 0)) {
-                            Utils.showSnackBarWarning(
-                                message: "Vui lòng nhập vật tư và số lượng");
+                          } else if (currentSupply.id == null || ((currentQuantity ?? 0) <= 0)) {
+                            Utils.showSnackBarWarning(message: "Vui lòng nhập vật tư và số lượng");
                           }
                         } else {
-                          Utils.showSnackBarWarning(
-                              message: "Vui lòng nhập vật tư và số lượng");
+                          Utils.showSnackBarWarning(message: "Vui lòng nhập vật tư và số lượng");
                           if (changeSelectedSupply.selectedSupplyId <= 0) {
                             changeSelectedSupply.changeValid(false);
                           } else {
                           }
                         }
                       },
-                      child: Text(
+                      child: const Text(
                         "Sửa phân bón",
                         style: TextStyle(color: Colors.blue),
                       )),
               : Expanded(
                   child: FlatButton(
                       onPressed: () {
-                        if (_formSupplyKey.currentState.validate()) {
-                          _formSupplyKey.currentState.save();
+                        if (_formSupplyKey.currentState!.validate()) {
+                          _formSupplyKey.currentState!.save();
                           if (changeSelectedSupply.selectedSupplyId <= 0) {
                             changeSelectedSupply.changeValid(false);
                           } else {
                             changeSelectedSupply.changeValid(true);
                           }
-                          var currentSupply =
-                              changeSelectedSupply.currentSupply;
-                          var currentDevice =
-                              changeSelectedDevice.currentDevice;
-                          var currentQuantity =
-                              _quantityController.text.parseDoubleThousand();
-                          if (currentSupply.id != null &&
-                              (currentQuantity ?? 0) > 0) {
-                            var quantityWithCurrentSupplyUnit =
-                                UtilAction.convertUnit(
-                                    inputValue: currentQuantity,
-                                    oldUnit: changeUnit.selectedUnit,
-                                    newUnit: changeSelectedSupply
-                                        .currentSupply.unit);
-                            SuppliesUsing newSup = SuppliesUsing()
+                          var currentSupply = changeSelectedSupply.currentSupply;
+                          var currentDevice = changeSelectedDevice.currentDevice;
+                          var currentQuantity = _quantityController.text.parseDoubleThousand();
+                          if (currentSupply.id != null && (currentQuantity ?? 0) > 0) {
+                            var quantityWithCurrentSupplyUnit = UtilAction.convertUnit(
+                              inputValue: currentQuantity,
+                              oldUnit: changeUnit.selectedUnit,
+                              newUnit: changeSelectedSupply.currentSupply.unit ?? '',
+                            );
+                            var newSup = SuppliesUsing()
                               ..dosage = _dosageController.text
                               ..howToUse = _howToUseController.text
                               ..quantity = quantityWithCurrentSupplyUnit
                             changeSupplyUsing.addSupply(newSup);
                             _resetForm();
                             _hidenKeyboard(context);
-                          } else if (currentSupply.id == null ||
-                              ((currentQuantity ?? 0) <= 0)) {
-                            Utils.showSnackBarWarning(
-                                message: "Vui lòng nhập vật tư và số lượng");
+                          } else if (currentSupply.id == null || ((currentQuantity ?? 0) <= 0)) {
+                            Utils.showSnackBarWarning(message: "Vui lòng nhập vật tư và số lượng");
                           }
                         } else {
-                          Utils.showSnackBarWarning(
-                              message: "Vui lòng nhập vật tư và số lượng");
+                          Utils.showSnackBarWarning(message: "Vui lòng nhập vật tư và số lượng");
                           if (changeSelectedSupply.selectedSupplyId <= 0) {
                             changeSelectedSupply.changeValid(false);
                           } else {
                           //
                         }
                       },
-                      child: Text(
+                      child: const Text(
                         "+ Thêm phân bón",
                         style: TextStyle(color: Colors.blue),
                       )),
       child: Column(
         children: [
           Container(
-            padding: EdgeInsets.all(8.0),
-            margin: EdgeInsets.all(8.0),
+            padding: const EdgeInsets.all(8.0),
+            margin: const EdgeInsets.all(8.0),
             decoration: BoxDecoration(
-                shape: BoxShape.rectangle,
-                borderRadius: BorderRadius.circular(10),
-                color: Colors.white,
-                border: Border.all(color: Colors.grey[300])),
+              shape: BoxShape.rectangle,
+              borderRadius: BorderRadius.circular(10),
+              color: Colors.white,
+              border: Border.all(
+                color: Colors.grey,
+              ),
+            ),
             child: Column(
               children: [
                 _btnSelectSubstrates(),
                 TextFormField(
                   keyboardType: TextInputType.text,
                   controller: _dosageController,
-                  decoration: InputDecoration(labelText: "Liều lượng sử dụng"),
+                  decoration: const InputDecoration(labelText: "Liều lượng sử dụng"),
                   onSaved: (newValue) {},
                   onChanged: (value) {
-                    if (!Validators.stringNotNullOrEmpty(
-                            _quantityController.text) &&
-                        !Validators.stringNotNullOrEmpty(
-                            _howToUseController.text) &&
+                    if (!Validators.stringNotNullOrEmpty(_quantityController.text) &&
+                        !Validators.stringNotNullOrEmpty(_howToUseController.text) &&
                         !Validators.stringNotNullOrEmpty(value) &&
                         Get.find<ChangeSupply>().selectedSupplyId <= 0 &&
                         changeSelectedDevice.selectedDeviceId <= 0) {
                           child: _quantityField(),
                         ),
                       ),
-                      SizedBox(
+                      const SizedBox(
                         width: 16.0,
                       ),
                       Expanded(
                     ]),
                 Container(
                   width: double.infinity,
-                  child: Text(
+                  child: const Text(
                     "Thiết bị",
                     style: TextStyle(color: Colors.black54, fontSize: 13.0),
                   ),
                 TextFormField(
                   keyboardType: TextInputType.text,
                   controller: _howToUseController,
-                  decoration: InputDecoration(labelText: "Phương pháp sử dụng"),
+                  decoration: const InputDecoration(labelText: "Phương pháp sử dụng"),
                   onSaved: (newValue) {},
                   onChanged: (value) {
-                    if (!Validators.stringNotNullOrEmpty(
-                            _quantityController.text) &&
+                    if (!Validators.stringNotNullOrEmpty(_quantityController.text) &&
                         !Validators.stringNotNullOrEmpty(value) &&
-                        !Validators.stringNotNullOrEmpty(
-                            _dosageController.text) &&
+                        !Validators.stringNotNullOrEmpty(_dosageController.text) &&
                         Get.find<ChangeSupply>().selectedSupplyId <= 0 &&
                         changeSelectedDevice.selectedDeviceId <= 0) {
                       changeFormField.change(false);
   }
 
   _hidenKeyboard(BuildContext context) {
-    FocusScopeNode currentFocus = FocusScope.of(context);
+    var currentFocus = FocusScope.of(context);
     if (!currentFocus.hasPrimaryFocus) {
       currentFocus.unfocus();
     }
   Widget build(BuildContext context) {
     return Column(
       children: [
-        Padding(
-          padding: const EdgeInsets.all(8.0),
+        const Padding(
+          padding: EdgeInsets.all(8.0),
           child: Align(
             alignment: Alignment.centerLeft,
             child: Text(
           ),
         ),
         _buildListSupply(),
-        SizedBox(
+        const SizedBox(
           height: 8.0,
         ),
         _formEdit(),
-        SizedBox(
+        const SizedBox(
           height: 8.0,
         ),
       ],

lib/presentation/screens/actions/end/sc_edit_action_end.dart

 class EditActionEndScreen extends StatefulWidget {
   final int cropId;
   final bool isEdit;
-  final int activityId;
-  EditActionEndScreen(
-      {@required this.cropId, this.isEdit = false, this.activityId});
+  final int? activityId;
+  EditActionEndScreen({required this.cropId, this.isEdit = false, this.activityId});
   @override
   _EditActionEndScreenState createState() => _EditActionEndScreenState();
 }
 
 class _EditActionEndScreenState extends State<EditActionEndScreen> {
-  final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
+  final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
   final _repository = Repository();
   GlobalKey<FormState> _formKey = GlobalKey();
   bool _autoValidate = false;
 
   var pref = LocalPref();
   DateTime executeTime = DateTime.now();
-  List<String> filePaths = List<String>();
+  List<String> filePaths = <String>[];
   var changeFileController = Get.put(ChangeFileController());
 
   Future<Null> getSharedPrefs() async {
   }
 
   _validateInputs() async {
-    if (_formKey.currentState.validate()) {
-      _formKey.currentState.save();
+    if (_formKey.currentState!.validate()) {
+      _formKey.currentState!.save();
       LoadingDialog.showLoadingDialog(context);
       filePaths = Get.find<ChangeFileController>().newFiles;
       try {
           }, (error) {
             LoadingDialog.hideLoadingDialog(context);
             Utils.showSnackBarError(message: AppException.handleError(error));
-          },
-              apiAddAction: ConstCommon.apiAddEnd,
-              paramActivity: ConstCommon.paramsActionEnd,
-              activityAction: activityEnd,
-              filePaths: filePaths);
+          }, apiAddAction: ConstCommon.apiAddEnd, paramActivity: ConstCommon.paramsActionEnd, activityAction: activityEnd, filePaths: filePaths);
         } else {
           //UPDATE
           _repository.updateAction((value) {
     return WidgetFieldDateTimePicker(
         initDateTime: executeTime,
         onUpdateDateTime: (selectedDate) {
-          _end.executeDate =
-              selectedDate.convertLocalDateTimeToStringUtcDateTime();
+          _end.executeDate = selectedDate.convertLocalDateTimeToStringUtcDateTime();
         });
   }
 
   Widget _executeByField() {
     return TextFormField(
       keyboardType: TextInputType.text,
-      decoration: InputDecoration(labelText: "Người thực hiện"),
+      decoration: const InputDecoration(labelText: "Người thực hiện"),
       enabled: false,
       controller: _executeByController,
       onSaved: (newValue) {},
               appBar: AppBarWidget(
                 isBack: true,
                 action: InkWell(
-                  child: Text(
+                  child: const Text(
                     'Huỷ',
-                    style: TextStyle(
-                        color: Colors.red, fontWeight: FontWeight.normal),
+                    style: TextStyle(color: Colors.red, fontWeight: FontWeight.normal),
                   ),
                   onTap: () {
                     if (Get.isSnackbarOpen) Get.back();
                   child: MultiBlocProvider(
                 providers: [
                   BlocProvider<ActionDetailBloc>(
-                      create: (context) =>
-                          ActionDetailBloc(repository: Repository())
-                            ..add(FetchData(
-                                isNeedFetchData: widget.isEdit,
-                                apiActivity: ConstCommon.apiDetailEnd,
-                                activityId: widget.activityId))),
+                    create: (context) => ActionDetailBloc(repository: Repository())
+                      ..add(
+                        FetchData(isNeedFetchData: widget.isEdit, apiActivity: ConstCommon.apiDetailEnd, activityId: widget.activityId ?? -1),
+                      ),
+                  ),
                   BlocProvider<MediaHelperBloc>(
-                    create: (context) =>
-                        MediaHelperBloc()..add(ChangeListMedia(items: [])),
+                    create: (context) => MediaHelperBloc()..add(ChangeListMedia(items: [])),
                   )
                 ],
                 child: Form(
                     key: _formKey,
-                    autovalidate: _autoValidate,
+                    // autovalidate: _autoValidate,
                     child: SafeArea(
                       child: SingleChildScrollView(
-                        child:
-                            BlocConsumer<ActionDetailBloc, ActionDetailState>(
+                        child: BlocConsumer<ActionDetailBloc, ActionDetailState>(
                           listener: (context, state) async {
                             if (state is ActionDetailFailure) {
                               LoadingDialog.hideLoadingDialog(context);
                             } else if (state is ActionDetailSuccess) {
                               LoadingDialog.hideLoadingDialog(context);
                               _end = End.fromJson(state.item);
-                              _end.activityId = widget.activityId;
-                              _descriptionController.text =
-                                  _end.description ?? "";
-                              _executeByController.text = _end.createdByName;
+                              _end.activityId = widget.activityId ?? -1;
+                              _descriptionController.text = _end.description ?? "";
+                              _executeByController.text = _end.createdByName ?? '';
 
-                              Get.find<ChangeDateTimePicker>().change(_end
-                                  .executeDate
-                                  .convertStringServerDateTimeToLocalDateTime());
+                              Get.find<ChangeDateTimePicker>().change(
+                                _end.executeDate?.convertStringServerDateTimeToLocalDateTime() ?? DateTime.now(),
+                              );
                               //Show media
-                              if (Validators.stringNotNullOrEmpty(_end.media)) {
+                              if (Validators.stringNotNullOrEmpty(_end.media ?? '')) {
                                 BlocProvider.of<MediaHelperBloc>(context).add(
-                                    ChangeListMedia(
-                                        items:
-                                            UtilAction.convertFilePathToMedia(
-                                                _end.media)));
+                                  ChangeListMedia(
+                                    items: UtilAction.convertFilePathToMedia(_end.media ?? ''),
+                                  ),
+                                );
                               }
                             } else if (state is ActionDetailInitial) {
                             } else if (state is ActionDetailLoading) {
                                 Padding(
                                   padding: const EdgeInsets.all(8.0),
                                   child: Column(
-                                    crossAxisAlignment:
-                                        CrossAxisAlignment.start,
+                                    crossAxisAlignment: CrossAxisAlignment.start,
                                     children: <Widget>[
-                                      Text(
+                                      const Text(
                                         plot_action_finish,
-                                        style: TextStyle(
-                                            fontWeight: FontWeight.w500,
-                                            fontSize: 22),
+                                        style: TextStyle(fontWeight: FontWeight.w500, fontSize: 22),
                                       ),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       Container(
                                         width: double.infinity,
-                                        child: Text(
+                                        child: const Text(
                                           "Ngày thực hiện *",
-                                          style: TextStyle(
-                                              color: Colors.black54,
-                                              fontSize: 13.0),
+                                          style: TextStyle(color: Colors.black54, fontSize: 13.0),
                                         ),
                                       ),
                                       _btnExecuteTimePicker(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _descriptionField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _executeByField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                     ],
                                   height: 16,
                                   color: Colors.grey[200],
                                 ),
-                                BlocBuilder<MediaHelperBloc, MediaHelperState>(
-                                    builder: (context, state) {
+                                BlocBuilder<MediaHelperBloc, MediaHelperState>(builder: (context, state) {
                                   if (state is MediaHelperSuccess) {
                                     return WidgetMediaPicker(
                                         currentItems: state.items,
-                                        onChangeFiles: (newPathFiles,
-                                            deletePathFiles) async {
-                                          Get.find<ChangeFileController>()
-                                              .change(newPathFiles,
-                                                  deletePathFiles);
+                                        onChangeFiles: (newPathFiles, deletePathFiles) async {
+                                          Get.find<ChangeFileController>().change(newPathFiles, deletePathFiles);
                                         });
                                   } else {
-                                    return Center(
-                                        child: CircularProgressIndicator());
+                                    return const Center(child: CircularProgressIndicator());
                                   }
                                 }),
                                 Padding(
                                   child: ButtonWidget(
                                       title: 'CẬP NHẬT',
                                       onPressed: () {
-                                        FocusScopeNode currentFocus =
-                                            FocusScope.of(context);
+                                        var currentFocus = FocusScope.of(context);
                                         if (!currentFocus.hasPrimaryFocus) {
                                           currentFocus.unfocus();
                                         }

lib/presentation/screens/actions/environment_update/sc_edit_action_environment_update.dart

 class EditActionEnvironmentUpdate extends StatefulWidget {
   final int cropId;
   final bool isEdit;
-  final int activityId;
-  EditActionEnvironmentUpdate(
-      {@required this.cropId, this.isEdit = false, this.activityId});
+  final int? activityId;
+  EditActionEnvironmentUpdate({required this.cropId, this.isEdit = false, this.activityId});
   @override
-  _EditActionEnvironmentUpdateState createState() =>
-      _EditActionEnvironmentUpdateState();
+  _EditActionEnvironmentUpdateState createState() => _EditActionEnvironmentUpdateState();
 }
 
-class _EditActionEnvironmentUpdateState
-    extends State<EditActionEnvironmentUpdate> {
-  final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
+class _EditActionEnvironmentUpdateState extends State<EditActionEnvironmentUpdate> {
+  final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
   final _repository = Repository();
   GlobalKey<FormState> _formKey = GlobalKey();
   bool _autoValidate = false;
   final _executeByController = TextEditingController();
 
   DateTime executeTime = DateTime.now();
-  List<String> filePaths = List<String>();
+  List<String> filePaths = <String>[];
   var changeFileController = Get.put(ChangeFileController());
 
   Future<Null> getSharedPrefs() async {
   }
 
   _validateInputs() async {
-    if (_formKey.currentState.validate()) {
-      _formKey.currentState.save();
+    if (_formKey.currentState!.validate()) {
+      _formKey.currentState!.save();
       LoadingDialog.showLoadingDialog(context);
       filePaths = Get.find<ChangeFileController>().newFiles;
       //Create request general model
       try {
-        RequestEnvironment requestEnvironment = RequestEnvironment()
+        var requestEnvironment = RequestEnvironment()
           ..cropId = _environment.cropId
           ..activityId = _environment.activityId
           ..executeDate = _environment.executeDate;
-        var envDetail = List<EnvDetail>();
+        var envDetail = <EnvDetail>[];
         envDetail.add(EnvDetail()
           ..name = "EC"
           ..index = _environment.ec);
           ..name = "LLN"
           ..index = _environment.lln);
         requestEnvironment.envDetail = envDetail;
-        requestEnvironment.mediaDel =
-            Get.find<ChangeFileController>().deleteFiles;
-        var activityEnvironmentUpdate =
-            jsonEncode(requestEnvironment.toJson()).toString();
+        requestEnvironment.mediaDel = Get.find<ChangeFileController>().deleteFiles;
+        var activityEnvironmentUpdate = jsonEncode(requestEnvironment.toJson()).toString();
         //ADD NEW
         if (_environment.activityId == null) {
           _repository.createAction((value) {
     return WidgetFieldDateTimePicker(
         initDateTime: executeTime,
         onUpdateDateTime: (selectedDate) {
-          _environment.executeDate =
-              selectedDate.convertLocalDateTimeToStringUtcDateTime();
+          _environment.executeDate = selectedDate.convertLocalDateTimeToStringUtcDateTime();
         });
   }
 
       hintValue: "EC",
       textController: _ecController,
       onSaved: (newValue) {
-        _environment.ec = newValue;
+        _environment.ec = newValue ?? '';
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "pH",
       textController: _phController,
       onSaved: (newValue) {
-        _environment.pH = newValue;
+        _environment.pH = newValue ?? '';
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "Nhiệt độ dung dịch",
       textController: _ocddController,
       onSaved: (newValue) {
-        _environment.ocdd = newValue;
+        _environment.ocdd = newValue ?? '';
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "Nhiệt độ môi trường",
       textController: _temperatureController,
       onSaved: (newValue) {
-        _environment.temperature = newValue;
+        _environment.temperature = newValue ?? '';
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "Độ ẩm",
       textController: _doController,
       onSaved: (newValue) {
-        _environment.dodo = newValue;
+        _environment.dodo = newValue ?? '';
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "Lưu lượng nước",
       textController: _llnController,
       onSaved: (newValue) {
-        _environment.lln = newValue;
+        _environment.lln = newValue ?? '';
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
   Widget _executeByField() {
     return TextFormField(
       keyboardType: TextInputType.text,
-      decoration: InputDecoration(labelText: "Người thực hiện"),
+      decoration: const InputDecoration(labelText: "Người thực hiện"),
       enabled: false,
       controller: _executeByController,
       onSaved: (newValue) {},
               appBar: AppBarWidget(
                 isBack: true,
                 action: InkWell(
-                  child: Text(
+                  child: const Text(
                     'Huỷ',
-                    style: TextStyle(
-                        color: Colors.red, fontWeight: FontWeight.normal),
+                    style: TextStyle(color: Colors.red, fontWeight: FontWeight.normal),
                   ),
                   onTap: () {
                     if (Get.isSnackbarOpen) Get.back();
                   child: MultiBlocProvider(
                 providers: [
                   BlocProvider<ActionDetailBloc>(
-                      create: (context) =>
-                          ActionDetailBloc(repository: Repository())
-                            ..add(FetchData(
-                                isNeedFetchData: widget.isEdit,
-                                apiActivity: ConstCommon.apiDetailEnvUpdate,
-                                activityId: widget.activityId))),
+                    create: (context) => ActionDetailBloc(repository: Repository())
+                      ..add(
+                        FetchData(
+                          isNeedFetchData: widget.isEdit,
+                          apiActivity: ConstCommon.apiDetailEnvUpdate,
+                          activityId: widget.activityId ?? -1,
+                        ),
+                      ),
+                  ),
                   BlocProvider<MediaHelperBloc>(
-                    create: (context) =>
-                        MediaHelperBloc()..add(ChangeListMedia(items: [])),
+                    create: (context) => MediaHelperBloc()..add(ChangeListMedia(items: [])),
                   )
                 ],
                 child: Form(
                     key: _formKey,
-                    autovalidate: _autoValidate,
+                    // autovalidate: _autoValidate,
                     child: SafeArea(
                       child: SingleChildScrollView(
-                        child:
-                            BlocConsumer<ActionDetailBloc, ActionDetailState>(
+                        child: BlocConsumer<ActionDetailBloc, ActionDetailState>(
                           listener: (context, state) async {
                             if (state is ActionDetailFailure) {
                               print("fail");
                               print(state.item);
                               _environment = Environment.fromJson(state.item);
                               //Parse theo API :')
-                              _environment.environmentUpdates
-                                  .forEach((envDetail) {
+                              _environment.environmentUpdates?.forEach((envDetail) {
                                 switch (envDetail.tbEnvironmentalName) {
                                   case "EC":
-                                    _environment.ec =
-                                        envDetail.index.toString();
+                                    _environment.ec = envDetail.index.toString();
                                     break;
                                   case "pH":
-                                    _environment.pH =
-                                        envDetail.index.toString();
+                                    _environment.pH = envDetail.index.toString();
                                     break;
                                   case "OCDD":
-                                    _environment.ocdd =
-                                        envDetail.index.toString();
+                                    _environment.ocdd = envDetail.index.toString();
                                     break;
                                   case "TEMPERATURE":
-                                    _environment.temperature =
-                                        envDetail.index.toString();
+                                    _environment.temperature = envDetail.index.toString();
                                     break;
                                   case "DO":
-                                    _environment.dodo =
-                                        envDetail.index.toString();
+                                    _environment.dodo = envDetail.index.toString();
                                     break;
                                   case "LLN":
-                                    _environment.lln =
-                                        envDetail.index.toString();
+                                    _environment.lln = envDetail.index.toString();
                                     break;
                                   default:
                                     break;
                                 }
                               });
-                              _environment.activityId = widget.activityId;
-                              _ecController.text =
-                                  _environment.ec.formatStringToStringDecimal();
-                              _phController.text =
-                                  _environment.pH.formatStringToStringDecimal();
-                              _ocddController.text = _environment.ocdd
-                                  .formatStringToStringDecimal();
-                              _temperatureController.text = _environment
-                                  .temperature
-                                  .formatStringToStringDecimal();
-                              _doController.text = _environment.dodo
-                                  .formatStringToStringDecimal();
-                              _llnController.text = _environment.lln
-                                  .formatStringToStringDecimal();
-                              _executeByController.text =
-                                  _environment.executeBy;
+                              _environment.activityId = widget.activityId ?? -1;
+                              _ecController.text = _environment.ec?.formatStringToStringDecimal() ?? '';
+                              _phController.text = _environment.pH?.formatStringToStringDecimal() ?? '';
+                              _ocddController.text = _environment.ocdd?.formatStringToStringDecimal() ?? '';
+                              _temperatureController.text = _environment.temperature?.formatStringToStringDecimal() ?? '';
+                              _doController.text = _environment.dodo?.formatStringToStringDecimal() ?? '';
+                              _llnController.text = _environment.lln?.formatStringToStringDecimal() ?? '';
+                              _executeByController.text = _environment.executeBy ?? '';
 
-                              Get.find<ChangeDateTimePicker>().change(_environment
-                                  .executeDate
-                                  .convertStringServerDateTimeToLocalDateTime());
+                              Get.find<ChangeDateTimePicker>().change(
+                                _environment.executeDate?.convertStringServerDateTimeToLocalDateTime() ?? DateTime.now(),
+                              );
                               //Show media
-                              if (Validators.stringNotNullOrEmpty(
-                                  _environment.media)) {
-                                BlocProvider.of<MediaHelperBloc>(context).add(
-                                    ChangeListMedia(
-                                        items:
-                                            UtilAction.convertFilePathToMedia(
-                                                _environment.media)));
+                              if (Validators.stringNotNullOrEmpty(_environment.media ?? '')) {
+                                BlocProvider.of<MediaHelperBloc>(context)
+                                    .add(ChangeListMedia(items: UtilAction.convertFilePathToMedia(_environment.media ?? '')));
                               }
                             } else if (state is ActionDetailInitial) {
                               print("init");
                                 Padding(
                                   padding: const EdgeInsets.all(8.0),
                                   child: Column(
-                                    crossAxisAlignment:
-                                        CrossAxisAlignment.start,
+                                    crossAxisAlignment: CrossAxisAlignment.start,
                                     children: <Widget>[
-                                      Text(
+                                      const Text(
                                         plot_action_environment_update,
-                                        style: TextStyle(
-                                            fontWeight: FontWeight.w500,
-                                            fontSize: 22),
+                                        style: TextStyle(fontWeight: FontWeight.w500, fontSize: 22),
                                       ),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       Container(
                                         width: double.infinity,
-                                        child: Text(
+                                        child: const Text(
                                           "Ngày thực hiện *",
-                                          style: TextStyle(
-                                              color: Colors.black54,
-                                              fontSize: 13.0),
+                                          style: TextStyle(color: Colors.black54, fontSize: 13.0),
                                         ),
                                       ),
                                       _btnExecuteTimePicker(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _ecField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _phField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _ocddField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _temperatureField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _doField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _llnField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _executeByField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                     ],
                                   height: 16,
                                   color: Colors.grey[200],
                                 ),
-                                BlocBuilder<MediaHelperBloc, MediaHelperState>(
-                                    builder: (context, state) {
+                                BlocBuilder<MediaHelperBloc, MediaHelperState>(builder: (context, state) {
                                   if (state is MediaHelperSuccess) {
                                     return WidgetMediaPicker(
                                         currentItems: state.items,
-                                        onChangeFiles: (newPathFiles,
-                                            deletePathFiles) async {
-                                          Get.find<ChangeFileController>()
-                                              .change(newPathFiles,
-                                                  deletePathFiles);
+                                        onChangeFiles: (newPathFiles, deletePathFiles) async {
+                                          Get.find<ChangeFileController>().change(newPathFiles, deletePathFiles);
                                         });
                                   } else {
-                                    return Center(
-                                        child: CircularProgressIndicator());
+                                    return const Center(child: CircularProgressIndicator());
                                   }
                                 }),
                                 Padding(
                                   child: ButtonWidget(
                                       title: 'CẬP NHẬT',
                                       onPressed: () {
-                                        FocusScopeNode currentFocus =
-                                            FocusScope.of(context);
+                                        var currentFocus = FocusScope.of(context);
                                         if (!currentFocus.hasPrimaryFocus) {
                                           currentFocus.unfocus();
                                         }

lib/presentation/screens/actions/harvest/sc_edit_action_harvest.dart

 class EditActionHarvestScreen extends StatefulWidget {
   final int cropId;
   final bool isEdit;
-  final int activityId;
-  EditActionHarvestScreen(
-      {@required this.cropId, this.isEdit = false, this.activityId});
+  final int? activityId;
+  EditActionHarvestScreen({required this.cropId, this.isEdit = false, this.activityId});
   @override
-  _EditActionHarvestScreenState createState() =>
-      _EditActionHarvestScreenState();
+  _EditActionHarvestScreenState createState() => _EditActionHarvestScreenState();
 }
 
 class _EditActionHarvestScreenState extends State<EditActionHarvestScreen> {
-  final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
+  final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
   final _repository = Repository();
   GlobalKey<FormState> _formKey = GlobalKey();
   bool _autoValidate = false;
 
   var pref = LocalPref();
   DateTime executeTime = DateTime.now();
-  List<String> filePaths = List<String>();
+  List<String> filePaths = <String>[];
   var changeFileController = Get.put(ChangeFileController());
 
   Future<Null> getSharedPrefs() async {
   }
 
   _validateInputs() async {
-    if (_formKey.currentState.validate()) {
-      _formKey.currentState.save();
+    if (_formKey.currentState!.validate()) {
+      _formKey.currentState!.save();
       LoadingDialog.showLoadingDialog(context);
       filePaths = Get.find<ChangeFileController>().newFiles;
       try {
     return WidgetFieldDateTimePicker(
         initDateTime: executeTime,
         onUpdateDateTime: (selectedDate) {
-          _harvest.executeDate =
-              selectedDate.convertLocalDateTimeToStringUtcDateTime();
+          _harvest.executeDate = selectedDate.convertLocalDateTimeToStringUtcDateTime();
         });
   }
 
       hintValue: "Số lượng/khối lượng loại 1",
       textController: _l1Controller,
       onSaved: (newValue) {
-        _harvest.collectedQuantityLv1 = newValue.parseDoubleThousand();
+        _harvest.collectedQuantityLv1 = (newValue ?? '0').parseDoubleThousand();
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "Số lượng/khối lượng loại 2",
       textController: _l2Controller,
       onSaved: (newValue) {
-        _harvest.collectedQuantityLv2 = newValue.parseDoubleThousand();
+        _harvest.collectedQuantityLv2 = (newValue ?? '0').parseDoubleThousand();
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "Số lượng/khối lượng loại 3",
       textController: _l3Controller,
       onSaved: (newValue) {
-        _harvest.collectedQuantityLv3 = newValue.parseDoubleThousand();
+        _harvest.collectedQuantityLv3 = (newValue ?? '0').parseDoubleThousand();
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "Số lượng/khối lượng loại bỏ",
       textController: _removedQuantityController,
       onSaved: (newValue) {
-        _harvest.removedQuantity = newValue.parseDoubleThousand();
+        _harvest.removedQuantity = (newValue ?? '0').parseDoubleThousand();
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
   Widget _executeByField() {
     return TextFormField(
       keyboardType: TextInputType.text,
-      decoration: InputDecoration(labelText: "Người thực hiện"),
+      decoration: const InputDecoration(labelText: "Người thực hiện"),
       enabled: false,
       controller: _executeByController,
       onSaved: (newValue) {},
               appBar: AppBarWidget(
                 isBack: true,
                 action: InkWell(
-                  child: Text(
+                  child: const Text(
                     'Huỷ',
-                    style: TextStyle(
-                        color: Colors.red, fontWeight: FontWeight.normal),
+                    style: TextStyle(color: Colors.red, fontWeight: FontWeight.normal),
                   ),
                   onTap: () {
                     if (Get.isSnackbarOpen) Get.back();
                   child: MultiBlocProvider(
                 providers: [
                   BlocProvider<ActionDetailBloc>(
-                      create: (context) =>
-                          ActionDetailBloc(repository: Repository())
-                            ..add(FetchData(
-                                isNeedFetchData: widget.isEdit,
-                                apiActivity: ConstCommon.apiDetailHarvest,
-                                activityId: widget.activityId))),
+                    create: (context) => ActionDetailBloc(repository: Repository())
+                      ..add(
+                        FetchData(
+                          isNeedFetchData: widget.isEdit,
+                          apiActivity: ConstCommon.apiDetailHarvest,
+                          activityId: widget.activityId ?? -1,
+                        ),
+                      ),
+                  ),
                   BlocProvider<MediaHelperBloc>(
-                    create: (context) =>
-                        MediaHelperBloc()..add(ChangeListMedia(items: [])),
+                    create: (context) => MediaHelperBloc()..add(ChangeListMedia(items: [])),
                   )
                 ],
                 child: Form(
                     key: _formKey,
-                    autovalidate: _autoValidate,
+                    // autovalidate: _autoValidate,
                     child: SafeArea(
                       child: SingleChildScrollView(
-                        child:
-                            BlocConsumer<ActionDetailBloc, ActionDetailState>(
+                        child: BlocConsumer<ActionDetailBloc, ActionDetailState>(
                           listener: (context, state) async {
                             if (state is ActionDetailFailure) {
                               LoadingDialog.hideLoadingDialog(context);
                               LoadingDialog.hideLoadingDialog(context);
                               print(state.item);
                               _harvest = Harvest.fromJson(state.item);
-                              _harvest.activityId = widget.activityId;
-                              _l1Controller.text = _harvest.collectedQuantityLv1
-                                  .formatNumtoStringDecimal();
-                              _l2Controller.text = _harvest.collectedQuantityLv2
-                                  .formatNumtoStringDecimal();
-                              _l3Controller.text = _harvest.collectedQuantityLv3
-                                  .formatNumtoStringDecimal();
-                              _removedQuantityController.text = _harvest
-                                  .removedQuantity
-                                  .formatNumtoStringDecimal();
-                              _descriptionController.text =
-                                  _harvest.description ?? "";
-                              _executeByController.text = _harvest.executeBy;
+                              _harvest.activityId = widget.activityId ?? -1;
+                              _l1Controller.text = _harvest.collectedQuantityLv1?.formatNumtoStringDecimal() ?? '';
+                              _l2Controller.text = _harvest.collectedQuantityLv2?.formatNumtoStringDecimal() ?? '';
+                              _l3Controller.text = _harvest.collectedQuantityLv3?.formatNumtoStringDecimal() ?? '';
+                              _removedQuantityController.text = _harvest.removedQuantity?.formatNumtoStringDecimal() ?? '';
+                              _descriptionController.text = _harvest.description ?? "";
+                              _executeByController.text = _harvest.executeBy ?? '';
 
-                              Get.find<ChangeDateTimePicker>().change(_harvest
-                                  .executeDate
-                                  .convertStringServerDateTimeToLocalDateTime());
+                              Get.find<ChangeDateTimePicker>()
+                                  .change(_harvest.executeDate?.convertStringServerDateTimeToLocalDateTime() ?? DateTime.now());
                               //Show media
-                              if (Validators.stringNotNullOrEmpty(
-                                  _harvest.media)) {
-                                BlocProvider.of<MediaHelperBloc>(context).add(
-                                    ChangeListMedia(
-                                        items:
-                                            UtilAction.convertFilePathToMedia(
-                                                _harvest.media)));
+                              if (Validators.stringNotNullOrEmpty(_harvest.media ?? '')) {
+                                BlocProvider.of<MediaHelperBloc>(context)
+                                    .add(ChangeListMedia(items: UtilAction.convertFilePathToMedia(_harvest.media ?? '')));
                               }
                             } else if (state is ActionDetailInitial) {
                             } else if (state is ActionDetailLoading) {
                                 Padding(
                                   padding: const EdgeInsets.all(8.0),
                                   child: Column(
-                                    crossAxisAlignment:
-                                        CrossAxisAlignment.start,
+                                    crossAxisAlignment: CrossAxisAlignment.start,
                                     children: <Widget>[
-                                      Text(
+                                      const Text(
                                         plot_action_harvest,
-                                        style: TextStyle(
-                                            fontWeight: FontWeight.w500,
-                                            fontSize: 22),
+                                        style: TextStyle(fontWeight: FontWeight.w500, fontSize: 22),
                                       ),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       Container(
                                         width: double.infinity,
-                                        child: Text(
+                                        child: const Text(
                                           "Ngày thực hiện *",
-                                          style: TextStyle(
-                                              color: Colors.black54,
-                                              fontSize: 13.0),
+                                          style: TextStyle(color: Colors.black54, fontSize: 13.0),
                                         ),
                                       ),
                                       _btnExecuteTimePicker(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _l1Field(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _l2Field(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _l3Field(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _removedQuantityField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _descriptionField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _executeByField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                     ],
                                   height: 16,
                                   color: Colors.grey[200],
                                 ),
-                                BlocBuilder<MediaHelperBloc, MediaHelperState>(
-                                    builder: (context, state) {
+                                BlocBuilder<MediaHelperBloc, MediaHelperState>(builder: (context, state) {
                                   if (state is MediaHelperSuccess) {
                                     return WidgetMediaPicker(
                                         currentItems: state.items,
-                                        onChangeFiles: (newPathFiles,
-                                            deletePathFiles) async {
-                                          Get.find<ChangeFileController>()
-                                              .change(newPathFiles,
-                                                  deletePathFiles);
+                                        onChangeFiles: (newPathFiles, deletePathFiles) async {
+                                          Get.find<ChangeFileController>().change(newPathFiles, deletePathFiles);
                                         });
                                   } else {
-                                    return Center(
-                                        child: CircularProgressIndicator());
+                                    return const Center(child: CircularProgressIndicator());
                                   }
                                 }),
                                 Container(
                                           harvestId: _harvest.id,
                                         ));
                                       } else {
-                                        Get.to(EditActionHarvestProcessScreen(
-                                            cropId: widget.cropId));
+                                        Get.to(EditActionHarvestProcessScreen(cropId: widget.cropId));
                                       }
                                     }),
                                 ButtonIconWidget(
                                           harvestId: _harvest.id,
                                         ));
                                       } else {
-                                        Get.to(EditActionPackingScreen(
-                                            cropId: widget.cropId));
+                                        Get.to(EditActionPackingScreen(cropId: widget.cropId));
                                       }
                                     }),
                                 ButtonIconWidget(
                                           harvestId: _harvest.id,
                                         ));
                                       } else {
-                                        Get.to(EditActionSellScreen(
-                                            cropId: widget.cropId));
+                                        Get.to(EditActionSellScreen(cropId: widget.cropId));
                                       }
                                     }),
-                                SizedBox(
+                                const SizedBox(
                                   height: 16,
                                 ),
                                 Padding(
                                   child: ButtonWidget(
                                       title: 'CẬP NHẬT',
                                       onPressed: () {
-                                        FocusScopeNode currentFocus =
-                                            FocusScope.of(context);
+                                        var currentFocus = FocusScope.of(context);
                                         if (!currentFocus.hasPrimaryFocus) {
                                           currentFocus.unfocus();
                                         }

lib/presentation/screens/actions/harvest_process/sc_edit_action_harvest_process.dart

 class EditActionHarvestProcessScreen extends StatefulWidget {
   final int cropId;
   final bool isEdit;
-  final int activityId;
-  final int harvestId;
-  EditActionHarvestProcessScreen(
-      {@required this.cropId,
-      this.isEdit = false,
-      this.activityId,
-      this.harvestId});
+  final int? activityId;
+  final int? harvestId;
+  EditActionHarvestProcessScreen({
+    required this.cropId,
+    this.isEdit = false,
+    this.activityId,
+    this.harvestId,
+  });
   @override
-  _EditActionHarvestProcessScreenState createState() =>
-      _EditActionHarvestProcessScreenState();
+  _EditActionHarvestProcessScreenState createState() => _EditActionHarvestProcessScreenState();
 }
 
-class _EditActionHarvestProcessScreenState
-    extends State<EditActionHarvestProcessScreen> {
-  final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
+class _EditActionHarvestProcessScreenState extends State<EditActionHarvestProcessScreen> {
+  final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
   final _repository = Repository();
   GlobalKey<FormState> _formKey = GlobalKey();
   bool _autoValidate = false;
   TextEditingController _removedQuantityController = TextEditingController();
   TextEditingController _descriptionController = TextEditingController();
   final _executeByController = TextEditingController();
-  List<SuppliesUsing> suppliesUsing = new List<SuppliesUsing>();
+  List<SuppliesUsing> suppliesUsing = <SuppliesUsing>[];
 
   var pref = LocalPref();
-  List<Harvest> _harvests = List<Harvest>();
-  Harvest harvestValue;
-  String executeTimeView;
+  List<Harvest> _harvests = <Harvest>[];
+  Harvest harvestValue = Harvest();
+  String executeTimeView = '';
   DateTime executeTime = DateTime.now();
-  List<String> filePaths = List<String>();
+  List<String> filePaths = <String>[];
   var changeFileController = Get.put(ChangeFileController());
 
   Future<Null> getSharedPrefs() async {
     super.initState();
     getSharedPrefs();
     changeFileController.initValue();
-    _harvestProcess.suppliesUsing = new List<SuppliesUsing>();
-    _harvestProcess.executeDate =
-        executeTime.convertLocalDateTimeToStringUtcDateTime();
+    _harvestProcess.suppliesUsing = <SuppliesUsing>[];
+    _harvestProcess.executeDate = executeTime.convertLocalDateTimeToStringUtcDateTime();
     executeTimeView = executeTime.displayDateTime_DDMMYYYY_HHmm();
     _harvestProcess.cropId = widget.cropId;
 
   }
 
   _validateInputs() async {
-    if (_formKey.currentState.validate()) {
-      _formKey.currentState.save();
+    if (_formKey.currentState!.validate()) {
+      _formKey.currentState!.save();
       LoadingDialog.showLoadingDialog(context);
       filePaths = Get.find<ChangeFileController>().newFiles;
-      List<SuppliesUsing> newSups = [];
+      var newSups = <SuppliesUsing>[];
       suppliesUsing.forEach((sup) {
         var newSup = sup;
         newSup.suppliesInWarehouseId = sup.tbSuppliesInWarehouseId;
       _harvestProcess.suppliesUsing = newSups;
       _harvestProcess.mediaDel = Get.find<ChangeFileController>().deleteFiles;
       try {
-        var activityHarvestProcess =
-            jsonEncode(_harvestProcess.toJson()).toString();
+        var activityHarvestProcess = jsonEncode(_harvestProcess.toJson()).toString();
         //ADD NEW
         if (_harvestProcess.activityId == null) {
           _repository.createAction((value) {
         if (snapshot.hasData) {
           return DropdownButtonFormField<Harvest>(
               value: harvestValue,
-              hint: Text("Mã thu hoạch"),
-              onChanged: (Harvest newValue) {
+              hint: const Text("Mã thu hoạch"),
+              onChanged: (Harvest? newValue) {
                 setState(() {
-                  harvestValue = newValue;
-                  _harvestProcess.harvestId = newValue.id;
+                  harvestValue = newValue ?? Harvest();
+                  _harvestProcess.harvestId = newValue?.id ?? -1;
                 });
               },
               isExpanded: true,
               items: _buildDropMenu(_harvests));
         } else {
-          return Center(
+          return const Center(
             child: CircularProgressIndicator(),
           );
         }
 
   Widget _btnExecuteTimePicker() {
     return FlatButton(
-        padding: EdgeInsets.only(top: 0.0, right: 0.0, bottom: 0.0, left: 0.0),
+        padding: const EdgeInsets.only(top: 0.0, right: 0.0, bottom: 0.0, left: 0.0),
         onPressed: () {
-          DatePicker.showDateTimePicker(context,
-              showTitleActions: true, onChanged: (date) {}, onConfirm: (date) {
+          DatePicker.showDateTimePicker(context, showTitleActions: true, onChanged: (date) {}, onConfirm: (date) {
             setState(() {
               executeTime = date;
-              _harvestProcess.executeDate =
-                  executeTime.convertLocalDateTimeToStringUtcDateTime();
+              _harvestProcess.executeDate = executeTime.convertLocalDateTimeToStringUtcDateTime();
               executeTimeView = executeTime.displayDateTime_DDMMYYYY_HHmm();
             });
           }, currentTime: executeTime, locale: LocaleType.vi);
         },
         child: Container(
-            padding:
-                EdgeInsets.only(top: 0.0, right: 0.0, bottom: 10.5, left: 0.0),
-            decoration: BoxDecoration(
+            padding: const EdgeInsets.only(top: 0.0, right: 0.0, bottom: 10.5, left: 0.0),
+            decoration: const BoxDecoration(
               border: kBorderTextField,
             ),
             child: Row(
                     child: Text(
                   //TODO: check condition
                   executeTimeView == null ? "$executeTime" : executeTimeView,
-                  style: TextStyle(fontSize: 14.0, color: Colors.black87),
+                  style: const TextStyle(fontSize: 14.0, color: Colors.black87),
                 )),
-                Icon(
+                const Icon(
                   Icons.date_range,
                   color: Colors.grey,
                 ),
       hintValue: "Số lượng/khối lượng loại 1",
       textController: _l1Controller,
       onSaved: (newValue) {
-        _harvestProcess.quantityLv1 = newValue.parseDoubleThousand();
+        _harvestProcess.quantityLv1 = (newValue ?? '0').parseDoubleThousand();
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "Số lượng/khối lượng loại 2",
       textController: _l2Controller,
       onSaved: (newValue) {
-        _harvestProcess.quantityLv2 = newValue.parseDoubleThousand();
+        _harvestProcess.quantityLv2 = (newValue ?? '0').parseDoubleThousand();
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "Số lượng/khối lượng loại 3",
       textController: _l3Controller,
       onSaved: (newValue) {
-        _harvestProcess.quantityLv3 = newValue.parseDoubleThousand();
+        _harvestProcess.quantityLv3 = (newValue ?? '0').parseDoubleThousand();
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "Số lượng/khối lượng loại bỏ",
       textController: _removedQuantityController,
       onSaved: (newValue) {
-        _harvestProcess.removedQuantity = newValue.parseDoubleThousand();
+        _harvestProcess.removedQuantity = (newValue ?? '0').parseDoubleThousand();
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
   Widget _executeByField() {
     return TextFormField(
       keyboardType: TextInputType.text,
-      decoration: InputDecoration(labelText: "Người thực hiện"),
+      decoration: const InputDecoration(labelText: "Người thực hiện"),
       enabled: false,
       controller: _executeByController,
       onSaved: (newValue) {},
               appBar: AppBarWidget(
                 isBack: true,
                 action: InkWell(
-                  child: Text(
+                  child: const Text(
                     'Huỷ',
-                    style: TextStyle(
-                        color: Colors.red, fontWeight: FontWeight.normal),
+                    style: TextStyle(color: Colors.red, fontWeight: FontWeight.normal),
                   ),
                   onTap: () {
                     if (Get.isSnackbarOpen) Get.back();
                   child: MultiBlocProvider(
                 providers: [
                   BlocProvider<ActionDetailBloc>(
-                      create: (context) =>
-                          ActionDetailBloc(repository: Repository())
-                            ..add(FetchData(
-                                isNeedFetchData: widget.isEdit,
-                                apiActivity:
-                                    ConstCommon.apiDetailHarvestProcess,
-                                activityId: widget.activityId))),
+                    create: (context) => ActionDetailBloc(repository: Repository())
+                      ..add(
+                        FetchData(
+                          isNeedFetchData: widget.isEdit,
+                          apiActivity: ConstCommon.apiDetailHarvestProcess,
+                          activityId: widget.activityId ?? -1,
+                        ),
+                      ),
+                  ),
                   BlocProvider<MediaHelperBloc>(
-                    create: (context) =>
-                        MediaHelperBloc()..add(ChangeListMedia(items: [])),
+                    create: (context) => MediaHelperBloc()..add(ChangeListMedia(items: [])),
                   )
                 ],
                 child: Form(
                     key: _formKey,
-                    autovalidate: _autoValidate,
+                    // autovalidate: _autoValidate,
                     child: SafeArea(
                       child: SingleChildScrollView(
-                        child:
-                            BlocConsumer<ActionDetailBloc, ActionDetailState>(
+                        child: BlocConsumer<ActionDetailBloc, ActionDetailState>(
                           listener: (context, state) async {
                             if (state is ActionDetailFailure) {
                               LoadingDialog.hideLoadingDialog(context);
                             } else if (state is ActionDetailSuccess) {
                               LoadingDialog.hideLoadingDialog(context);
                               print(state.item);
-                              _harvestProcess =
-                                  HarvestProcess.fromJson(state.item);
-                              _harvestProcess.activityId = widget.activityId;
-                              _l1Controller.text = _harvestProcess.quantityLv1
-                                  .formatNumtoStringDecimal();
-                              _l2Controller.text = _harvestProcess.quantityLv2
-                                  .formatNumtoStringDecimal();
-                              _l3Controller.text = _harvestProcess.quantityLv3
-                                  .formatNumtoStringDecimal();
-                              _removedQuantityController.text = _harvestProcess
-                                  .removedQuantity
-                                  .formatNumtoStringDecimal();
-                              _descriptionController.text =
-                                  _harvestProcess.description ?? "";
-                              _executeByController.text =
-                                  _harvestProcess.executeBy;
+                              _harvestProcess = HarvestProcess.fromJson(state.item);
+                              _harvestProcess.activityId = widget.activityId ?? -1;
+                              _l1Controller.text = _harvestProcess.quantityLv1?.formatNumtoStringDecimal() ?? '';
+                              _l2Controller.text = _harvestProcess.quantityLv2?.formatNumtoStringDecimal() ?? '';
+                              _l3Controller.text = _harvestProcess.quantityLv3?.formatNumtoStringDecimal() ?? '';
+                              _removedQuantityController.text = _harvestProcess.removedQuantity?.formatNumtoStringDecimal() ?? '';
+                              _descriptionController.text = _harvestProcess.description ?? "";
+                              _executeByController.text = _harvestProcess.executeBy ?? '';
 
                               //select harvest
                               getHarvestBloc.getHarvests((data) {
                                 }
                               }, (err) {});
 
-                              executeTime = _harvestProcess.executeDate
-                                  .convertStringServerDateTimeToLocalDateTime();
-                              executeTimeView =
-                                  executeTime.displayDateTime_DDMMYYYY_HHmm();
+                              executeTime = _harvestProcess.executeDate?.convertStringServerDateTimeToLocalDateTime() ?? DateTime.now();
+                              executeTimeView = executeTime.displayDateTime_DDMMYYYY_HHmm();
                               //Show media
-                              if (Validators.stringNotNullOrEmpty(
-                                  _harvestProcess.media)) {
-                                BlocProvider.of<MediaHelperBloc>(context).add(
-                                    ChangeListMedia(
-                                        items:
-                                            UtilAction.convertFilePathToMedia(
-                                                _harvestProcess.media)));
+                              if (Validators.stringNotNullOrEmpty(_harvestProcess.media ?? '')) {
+                                BlocProvider.of<MediaHelperBloc>(context)
+                                    .add(ChangeListMedia(items: UtilAction.convertFilePathToMedia(_harvestProcess.media ?? '')));
                               }
                               //list supply
-                              suppliesUsing = _harvestProcess.suppliesUsing;
-                              Get.find<ChangeSupplyUsing>()
-                                  .changeInitList(suppliesUsing);
+                              suppliesUsing = _harvestProcess.suppliesUsing ?? <SuppliesUsing>[];
+                              Get.find<ChangeSupplyUsing>().changeInitList(suppliesUsing);
                             } else if (state is ActionDetailInitial) {
                             } else if (state is ActionDetailLoading) {
                               LoadingDialog.showLoadingDialog(context);
                                 Padding(
                                   padding: const EdgeInsets.all(8.0),
                                   child: Column(
-                                    crossAxisAlignment:
-                                        CrossAxisAlignment.start,
+                                    crossAxisAlignment: CrossAxisAlignment.start,
                                     children: <Widget>[
-                                      Text(
+                                      const Text(
                                         plot_action_harvest_process,
-                                        style: TextStyle(
-                                            fontWeight: FontWeight.w500,
-                                            fontSize: 22),
+                                        style: TextStyle(fontWeight: FontWeight.w500, fontSize: 22),
                                       ),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       Container(
                                         width: double.infinity,
-                                        child: Text(
+                                        child: const Text(
                                           "Ngày thực hiện *",
-                                          style: TextStyle(
-                                              color: Colors.black54,
-                                              fontSize: 13.0),
+                                          style: TextStyle(color: Colors.black54, fontSize: 13.0),
                                         ),
                                       ),
                                       _btnExecuteTimePicker(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _dropdownHarvest(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _l1Field(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _l2Field(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _l3Field(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _removedQuantityField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _descriptionField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _executeByField(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                     ],
                                     onChangeSupplies: (value) {
                                       suppliesUsing = value;
                                     }),
-                                SizedBox(
+                                const SizedBox(
                                   height: 8.0,
                                 ),
                                 Container(
                                   height: 16,
                                   color: Colors.grey[200],
                                 ),
-                                BlocBuilder<MediaHelperBloc, MediaHelperState>(
-                                    builder: (context, state) {
+                                BlocBuilder<MediaHelperBloc, MediaHelperState>(builder: (context, state) {
                                   if (state is MediaHelperSuccess) {
                                     return WidgetMediaPicker(
                                         currentItems: state.items,
-                                        onChangeFiles: (newPathFiles,
-                                            deletePathFiles) async {
-                                          Get.find<ChangeFileController>()
-                                              .change(newPathFiles,
-                                                  deletePathFiles);
+                                        onChangeFiles: (newPathFiles, deletePathFiles) async {
+                                          Get.find<ChangeFileController>().change(newPathFiles, deletePathFiles);
                                         });
                                   } else {
-                                    return Center(
-                                        child: CircularProgressIndicator());
+                                    return const Center(child: CircularProgressIndicator());
                                   }
                                 }),
                                 Padding(
                                   child: ButtonWidget(
                                       title: 'CẬP NHẬT',
                                       onPressed: () {
-                                        FocusScopeNode currentFocus =
-                                            FocusScope.of(context);
+                                        var currentFocus = FocusScope.of(context);
                                         if (!currentFocus.hasPrimaryFocus) {
                                           currentFocus.unfocus();
                                         }
-                                        if (Get.find<ChangeFieldFormSupply>()
-                                            .isChanged) {
-                                          Utils.showDialogConfirmSupply(
-                                              onConfirm: () {
+                                        if (Get.find<ChangeFieldFormSupply>().isChanged) {
+                                          Utils.showDialogConfirmSupply(onConfirm: () {
                                             Get.back();
                                             _validateInputs();
                                           });

lib/presentation/screens/actions/harvest_process/widget_harvest_process_supply.dart

 class WidgetHarvestProcessSupply extends StatefulWidget {
   final List<SuppliesUsing> currentItems;
   final Function(List<SuppliesUsing> supplyChanges) onChangeSupplies;
-  WidgetHarvestProcessSupply(
-      {this.currentItems, @required this.onChangeSupplies});
+  WidgetHarvestProcessSupply({required this.currentItems, required this.onChangeSupplies});
   @override
-  _WidgetHarvestProcessSupplyState createState() =>
-      _WidgetHarvestProcessSupplyState();
+  _WidgetHarvestProcessSupplyState createState() => _WidgetHarvestProcessSupplyState();
 }
 
-class _WidgetHarvestProcessSupplyState
-    extends State<WidgetHarvestProcessSupply> {
+class _WidgetHarvestProcessSupplyState extends State<WidgetHarvestProcessSupply> {
   final _dosageController = TextEditingController();
   final _quantityController = TextEditingController();
   final _howToUseController = TextEditingController();
         return Container(
             height: 120,
             child: ListView.builder(
-                physics: ClampingScrollPhysics(),
+                physics: const ClampingScrollPhysics(),
                 scrollDirection: Axis.horizontal,
                 shrinkWrap: true,
                 itemCount: value.currentItems.length,
                           ..name = editedSupplyUsing.equipmentName;
                         changeSelectedDevice.change(editedDevice);
 
-                        changeUnit
-                            .updateListByUnitName(editedSupplyUsing.supplyUnit);
-                        changeUnit.updateSelected(editedSupplyUsing.supplyUnit);
-                        _dosageController.text = editedSupplyUsing.dosage;
-                        _howToUseController.text = editedSupplyUsing.howToUse;
-                        _quantityController.text = editedSupplyUsing.quantity
-                            .formatNumtoStringDecimal();
+                        changeUnit.updateListByUnitName(editedSupplyUsing.supplyUnit ?? '');
+                        changeUnit.updateSelected(editedSupplyUsing.supplyUnit ?? '');
+                        _dosageController.text = editedSupplyUsing.dosage ?? '';
+                        _howToUseController.text = editedSupplyUsing.howToUse ?? '';
+                        _quantityController.text = editedSupplyUsing.quantity?.formatNumtoStringDecimal() ?? '';
                       },
                       child: Card(
                           child: Stack(
                         alignment: Alignment.bottomCenter,
-                        overflow: Overflow.visible,
+                        // overflow: Overflow.visible,
                         children: <Widget>[
                           Positioned(
                               child: ClipRRect(
                             borderRadius: BorderRadius.circular(8),
                             child: Container(
-                              padding: EdgeInsets.all(4),
+                              padding: const EdgeInsets.all(4),
                               width: 150,
                               child: Column(
                                 mainAxisAlignment: MainAxisAlignment.center,
                                 children: [
-                                  SizedBox(
+                                  const SizedBox(
                                     height: 12.0,
                                   ),
                                   Flexible(
-                                    child: Text(
-                                        value.currentItems[index].supplyName ??
-                                            "",
-                                        overflow: TextOverflow.ellipsis,
-                                        maxLines: 1),
+                                    child: Text(value.currentItems[index].supplyName ?? "", overflow: TextOverflow.ellipsis, maxLines: 1),
                                   ),
-                                  Validators.stringNotNullOrEmpty(
-                                          value.currentItems[index].dosage)
+                                  Validators.stringNotNullOrEmpty(value.currentItems[index].dosage ?? '')
+                                      ? Flexible(child: Text("${value.currentItems[index].dosage ?? ""}"))
+                                      : const SizedBox(),
+                                  Validators.stringNotNullOrEmpty(value.currentItems[index].quantity?.formatNumtoStringDecimal() ?? '')
                                       ? Flexible(
                                           child: Text(
-                                              "${value.currentItems[index].dosage ?? ""}"))
-                                      : SizedBox(),
-                                  Validators.stringNotNullOrEmpty(value
-                                          .currentItems[index].quantity
-                                          .formatNumtoStringDecimal())
-                                      ? Flexible(
-                                          child: Text(
-                                              "${value.currentItems[index].quantity.formatNumtoStringDecimal() ?? ""} ${value.currentItems[index].supplyUnit ?? ""}"))
-                                      : SizedBox(),
-                                  Validators.stringNotNullOrEmpty(value
-                                          .currentItems[index].equipmentName)
-                                      ? Flexible(
-                                          child: Text(
-                                              "${value.currentItems[index].equipmentName ?? ""}"))
-                                      : SizedBox(),
-                                  Validators.stringNotNullOrEmpty(
-                                          value.currentItems[index].howToUse)
-                                      ? Flexible(
-                                          child: Text(
-                                              "${value.currentItems[index].howToUse ?? ""}"))
-                                      : SizedBox(),
+                                              "${value.currentItems[index].quantity?.formatNumtoStringDecimal() ?? ""} ${value.currentItems[index].supplyUnit ?? ""}"))
+                                      : const SizedBox(),
+                                  Validators.stringNotNullOrEmpty(value.currentItems[index].equipmentName ?? '')
+                                      ? Flexible(child: Text("${value.currentItems[index].equipmentName ?? ""}"))
+                                      : const SizedBox(),
+                                  Validators.stringNotNullOrEmpty(value.currentItems[index].howToUse ?? '')
+                                      ? Flexible(child: Text("${value.currentItems[index].howToUse ?? ""}"))
+                                      : const SizedBox(),
                                 ],
                               ),
                             ),
                             top: -10,
                             right: -10,
                             child: IconButton(
-                                icon: Icon(
+                                icon: const Icon(
                                   Icons.cancel,
                                   color: Colors.redAccent,
                                 ),
   Widget _btnSelectSubstrates() {
     return GetBuilder<ChangeSupply>(builder: (data) {
       return FlatButton(
-          padding:
-              EdgeInsets.only(top: 0.0, right: 0.0, bottom: 0.0, left: 0.0),
+          padding: const EdgeInsets.only(top: 0.0, right: 0.0, bottom: 0.0, left: 0.0),
           onPressed: () {
             var currentIndexEdit = changeSupplyUsing.currentIndex;
             Navigator.of(context)
                           type: ConstCommon.supplyTypeAll,
                           selectedId: changeSelectedSupply.selectedSupplyId,
                           currentItems: changeSupplyUsing.currentItems,
-                          currentEditId: (currentIndexEdit >= 0)
-                              ? changeSupplyUsing.currentItems[currentIndexEdit]
-                                  .tbSuppliesInWarehouseId
-                              : -1,
+                          currentEditId:
+                              (currentIndexEdit >= 0) ? changeSupplyUsing.currentItems[currentIndexEdit].tbSuppliesInWarehouseId ?? -1 : -1,
                         ),
                     fullscreenDialog: false))
                 .then((value) {
               if (value != null) {
                 var result = value as Supply;
                 changeSelectedSupply.change(result);
-                changeUnit.updateListByUnitName(result.unit);
+                changeUnit.updateListByUnitName(result.unit ?? '');
                 changeFormField.change(true);
               }
             });
               crossAxisAlignment: CrossAxisAlignment.start,
               children: [
                 Container(
-                    padding: EdgeInsets.only(
-                        top: 0.0, right: 0.0, bottom: 10.5, left: 0.0),
+                    padding: const EdgeInsets.only(top: 0.0, right: 0.0, bottom: 10.5, left: 0.0),
                     decoration: BoxDecoration(
                       border: Border(
-                          bottom: BorderSide(
-                              width: 1,
-                              color: isValid ? Colors.grey : Colors.red[900])),
+                        bottom: BorderSide(
+                          width: 1,
+                          color: isValid ? Colors.grey : Colors.red,
+                        ),
+                      ),
                     ),
                     child: Column(
                       crossAxisAlignment: CrossAxisAlignment.start,
                       children: [
                         Text(
                           'Hoá chất xử lý *',
-                          style: TextStyle(
-                              fontSize: 13,
-                              fontWeight: FontWeight.normal,
-                              color:
-                                  isValid ? Colors.black54 : Colors.red[600]),
+                          style: TextStyle(fontSize: 13, fontWeight: FontWeight.normal, color: isValid ? Colors.black54 : Colors.red[600]),
                         ),
                         Row(
                           children: [
                             Expanded(
-                                child: Text(
-                                    changeSelectedSupply.selectedSupplyName ??
-                                        "Hoá chất xử lý",
-                                    style: TextStyle(
-                                        fontSize: 14.0,
-                                        color: Colors.black87))),
-                            Icon(
+                                child: Text(changeSelectedSupply.selectedSupplyName ?? "Hoá chất xử lý",
+                                    style: const TextStyle(fontSize: 14.0, color: Colors.black87))),
+                            const Icon(
                               Icons.arrow_drop_down,
                               color: Colors.grey,
                             ),
                         ),
                       ],
                     )),
-                isValid ? SizedBox() : WidgetErrorTextField()
+                isValid ? const SizedBox() : WidgetErrorTextField()
               ],
             );
           }));
   Widget _btnSelectDevice() {
     return GetBuilder<ChangeDevice>(builder: (data) {
       return FlatButton(
-          padding:
-              EdgeInsets.only(top: 0.0, right: 0.0, bottom: 0.0, left: 0.0),
+          padding: const EdgeInsets.only(top: 0.0, right: 0.0, bottom: 0.0, left: 0.0),
           onPressed: () {
             Navigator.of(context)
-                .push(MaterialPageRoute(
-                    builder: (_) => ListDeviceActivity(
-                        selectedId: changeSelectedDevice.selectedDeviceId),
-                    fullscreenDialog: false))
+                .push(
+                    MaterialPageRoute(builder: (_) => ListDeviceActivity(selectedId: changeSelectedDevice.selectedDeviceId), fullscreenDialog: false))
                 .then((value) {
               if (value != null) {
                 var result = value as Device;
             });
           },
           child: Container(
-              padding: EdgeInsets.only(
-                  top: 0.0, right: 0.0, bottom: 10.5, left: 0.0),
-              decoration: BoxDecoration(
+              padding: const EdgeInsets.only(top: 0.0, right: 0.0, bottom: 10.5, left: 0.0),
+              decoration: const BoxDecoration(
                 border: kBorderTextField,
               ),
               child: Row(
                 children: [
                   GetBuilder<ChangeSupply>(
                       builder: (_) => Expanded(
-                          child: Text(
-                              changeSelectedDevice.selectedDeviceName ??
-                                  "Thiết bị",
-                              style: TextStyle(
-                                  fontSize: 14.0, color: Colors.black87)))),
-                  Icon(
+                          child: Text(changeSelectedDevice.selectedDeviceName ?? "Thiết bị",
+                              style: const TextStyle(fontSize: 14.0, color: Colors.black87)))),
+                  const Icon(
                     Icons.arrow_drop_down,
                     color: Colors.grey,
                   ),
             var oldSelected = data.selectedUnit;
             if (oldSelected == value) {
             } else {
-              assignValue = UtilAction.convertUnit(
-                  inputValue: assignValue,
-                  oldUnit: oldSelected,
-                  newUnit: value);
+              assignValue = UtilAction.convertUnit(inputValue: assignValue, oldUnit: oldSelected, newUnit: value ?? '');
             }
             _quantityController.text = assignValue.formatNumtoStringDecimal();
           }
-          changeUnit.updateSelected(value);
+          changeUnit.updateSelected(value ?? '');
         },
       );
     });
     return WidgetTextFormFieldNumber(
       hintValue: "Tổng lượng sử dụng *",
       textController: _quantityController,
-      validator: (String value) {
-        return Validators.validateNotNullOrEmpty(
-            value, label_validate_input_empty);
+      validator: (String? value) {
+        // return Validators.validateNotNullOrEmpty(value, label_validate_input_empty);
       },
       onChanged: (value) {
         if (!Validators.stringNotNullOrEmpty(value) &&
           changeFormField.change(true);
         }
       },
+      onSaved: (_) {},
     );
   }
 
         mainAxisAlignment: MainAxisAlignment.spaceBetween,
         children: [
           _.isEdit
-              ? OutlineButton(
-                  shape: RoundedRectangleBorder(
-                      borderRadius: new BorderRadius.circular(8.0)),
-                  child: Text("Huỷ"),
-                  onPressed: () {
+              ? InkWell(
+                  // shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8.0)),
+                  child: const Text("Huỷ"),
+                  onTap: () {
                     changeButton.resetValue();
                     _resetForm();
                     _hidenKeyboard(context);
                   })
-              : SizedBox(),
+              : const SizedBox(),
           _.isEdit
               ? Expanded(
                   child: FlatButton(
                       onPressed: () {
-                        if (_formSupplyKey.currentState.validate()) {
-                          _formSupplyKey.currentState.save();
+                        if (_formSupplyKey.currentState!.validate()) {
+                          _formSupplyKey.currentState!.save();
                           if (changeSelectedSupply.selectedSupplyId <= 0) {
                             changeSelectedSupply.changeValid(false);
                           } else {
                             changeSelectedSupply.changeValid(true);
                           }
-                          var currentSupply =
-                              changeSelectedSupply.currentSupply;
-                          var currentDevice =
-                              changeSelectedDevice.currentDevice;
-                          var currentQuantity =
-                              _quantityController.text.parseDoubleThousand();
-                          if (currentSupply.id != null &&
-                              (currentQuantity ?? 0) > 0) {
-                            var quantityWithCurrentSupplyUnit =
-                                UtilAction.convertUnit(
-                                    inputValue: currentQuantity,
-                                    oldUnit: changeUnit.selectedUnit,
-                                    newUnit: changeSelectedSupply
-                                        .currentSupply.unit);
-                            SuppliesUsing newSup = SuppliesUsing()
+                          var currentSupply = changeSelectedSupply.currentSupply;
+                          var currentDevice = changeSelectedDevice.currentDevice;
+                          var currentQuantity = _quantityController.text.parseDoubleThousand();
+                          if (currentSupply.id != null && (currentQuantity ?? 0) > 0) {
+                            var quantityWithCurrentSupplyUnit = UtilAction.convertUnit(
+                              inputValue: currentQuantity,
+                              oldUnit: changeUnit.selectedUnit,
+                              newUnit: changeSelectedSupply.currentSupply.unit ?? '',
+                            );
+                            var newSup = SuppliesUsing()
                               ..dosage = _dosageController.text
                               ..howToUse = _howToUseController.text
                               ..quantity = quantityWithCurrentSupplyUnit
                               ..equipmentName = currentDevice.name
                               ..supplyUnit = currentSupply.unit
                               ..unit = currentSupply.unit;
-                            changeSupplyUsing.editSupply(
-                                changeSupplyUsing.currentIndex, newSup);
+                            changeSupplyUsing.editSupply(changeSupplyUsing.currentIndex, newSup);
                             _resetForm();
                             _hidenKeyboard(context);
-                          } else if (currentSupply.id == null ||
-                              ((currentQuantity ?? 0) <= 0)) {
-                            Utils.showSnackBarWarning(
-                                message: "Vui lòng nhập vật tư và số lượng");
+                          } else if (currentSupply.id == null || ((currentQuantity ?? 0) <= 0)) {
+                            Utils.showSnackBarWarning(message: "Vui lòng nhập vật tư và số lượng");
                           }
                         } else {
-                          Utils.showSnackBarWarning(
-                              message: "Vui lòng nhập vật tư và số lượng");
+                          Utils.showSnackBarWarning(message: "Vui lòng nhập vật tư và số lượng");
                           if (changeSelectedSupply.selectedSupplyId <= 0) {
                             changeSelectedSupply.changeValid(false);
                           } else {
                           }
                         }
                       },
-                      child: Text(
+                      child: const Text(
                         "Sửa hoá chất xử lý",
                         style: TextStyle(color: Colors.blue),
                       )),
               : Expanded(
                   child: FlatButton(
                       onPressed: () {
-                        if (_formSupplyKey.currentState.validate()) {
-                          _formSupplyKey.currentState.save();
+                        if (_formSupplyKey.currentState!.validate()) {
+                          _formSupplyKey.currentState!.save();
                           if (changeSelectedSupply.selectedSupplyId <= 0) {
                             changeSelectedSupply.changeValid(false);
                           } else {
                             changeSelectedSupply.changeValid(true);
                           }
-                          var currentSupply =
-                              changeSelectedSupply.currentSupply;
-                          var currentDevice =
-                              changeSelectedDevice.currentDevice;
-                          var currentQuantity =
-                              _quantityController.text.parseDoubleThousand();
-                          if (currentSupply.id != null &&
-                              (currentQuantity ?? 0) > 0) {
-                            var quantityWithCurrentSupplyUnit =
-                                UtilAction.convertUnit(
-                                    inputValue: currentQuantity,
-                                    oldUnit: changeUnit.selectedUnit,
-                                    newUnit: changeSelectedSupply
-                                        .currentSupply.unit);
-                            SuppliesUsing newSup = SuppliesUsing()
+                          var currentSupply = changeSelectedSupply.currentSupply;
+                          var currentDevice = changeSelectedDevice.currentDevice;
+                          var currentQuantity = _quantityController.text.parseDoubleThousand();
+                          if (currentSupply.id != null && (currentQuantity ?? 0) > 0) {
+                            var quantityWithCurrentSupplyUnit = UtilAction.convertUnit(
+                              inputValue: currentQuantity,
+                              oldUnit: changeUnit.selectedUnit,
+                              newUnit: changeSelectedSupply.currentSupply.unit ?? '',
+                            );
+                            var newSup = SuppliesUsing()
                               ..dosage = _dosageController.text
                               ..howToUse = _howToUseController.text
                               ..quantity = quantityWithCurrentSupplyUnit
                             changeSupplyUsing.addSupply(newSup);
                             _resetForm();
                             _hidenKeyboard(context);
-                          } else if (currentSupply.id == null ||
-                              ((currentQuantity ?? 0) <= 0)) {
-                            Utils.showSnackBarWarning(
-                                message: "Vui lòng nhập vật tư và số lượng");
+                          } else if (currentSupply.id == null || ((currentQuantity ?? 0) <= 0)) {
+                            Utils.showSnackBarWarning(message: "Vui lòng nhập vật tư và số lượng");
                           }
                         } else {
-                          Utils.showSnackBarWarning(
-                              message: "Vui lòng nhập vật tư và số lượng");
+                          Utils.showSnackBarWarning(message: "Vui lòng nhập vật tư và số lượng");
                           if (changeSelectedSupply.selectedSupplyId <= 0) {
                             changeSelectedSupply.changeValid(false);
                           } else {
                           }
                         }
                       },
-                      child: Text(
+                      child: const Text(
                         "+ Thêm hoá chất xử lý",
                         style: TextStyle(color: Colors.blue),
                       )),
       child: Column(
         children: [
           Container(
-            padding: EdgeInsets.all(8.0),
-            margin: EdgeInsets.all(8.0),
+            padding: const EdgeInsets.all(8.0),
+            margin: const EdgeInsets.all(8.0),
             decoration: BoxDecoration(
-                shape: BoxShape.rectangle,
-                borderRadius: BorderRadius.circular(10),
-                color: Colors.white,
-                border: Border.all(color: Colors.grey[300])),
+              shape: BoxShape.rectangle,
+              borderRadius: BorderRadius.circular(10),
+              color: Colors.white,
+              border: Border.all(
+                color: Colors.grey,
+              ),
+            ),
             child: Column(
               children: [
                 _btnSelectSubstrates(),
                 TextFormField(
                   keyboardType: TextInputType.text,
                   controller: _dosageController,
-                  decoration: InputDecoration(labelText: "Liều lượng sử dụng"),
+                  decoration: const InputDecoration(labelText: "Liều lượng sử dụng"),
                   onSaved: (newValue) {},
                   onChanged: (value) {
-                    if (!Validators.stringNotNullOrEmpty(
-                            _quantityController.text) &&
-                        !Validators.stringNotNullOrEmpty(
-                            _howToUseController.text) &&
+                    if (!Validators.stringNotNullOrEmpty(_quantityController.text) &&
+                        !Validators.stringNotNullOrEmpty(_howToUseController.text) &&
                         !Validators.stringNotNullOrEmpty(value) &&
                         Get.find<ChangeSupply>().selectedSupplyId <= 0 &&
                         changeSelectedDevice.selectedDeviceId <= 0) {
                           child: _quantityField(),
                         ),
                       ),
-                      SizedBox(
+                      const SizedBox(
                         width: 16.0,
                       ),
                       Expanded(
                     ]),
                 Container(
                   width: double.infinity,
-                  child: Text(
+                  child: const Text(
                     "Thiết bị",
                     style: TextStyle(color: Colors.black54, fontSize: 13.0),
                   ),
                 TextFormField(
                   keyboardType: TextInputType.text,
                   controller: _howToUseController,
-                  decoration: InputDecoration(labelText: "Phương pháp sử dụng"),
+                  decoration: const InputDecoration(labelText: "Phương pháp sử dụng"),
                   onSaved: (newValue) {},
                   onChanged: (value) {
-                    if (!Validators.stringNotNullOrEmpty(
-                            _quantityController.text) &&
+                    if (!Validators.stringNotNullOrEmpty(_quantityController.text) &&
                         !Validators.stringNotNullOrEmpty(value) &&
-                        !Validators.stringNotNullOrEmpty(
-                            _dosageController.text) &&
+                        !Validators.stringNotNullOrEmpty(_dosageController.text) &&
                         Get.find<ChangeSupply>().selectedSupplyId <= 0 &&
                         changeSelectedDevice.selectedDeviceId <= 0) {
                       changeFormField.change(false);
   }
 
   _hidenKeyboard(BuildContext context) {
-    FocusScopeNode currentFocus = FocusScope.of(context);
+    var currentFocus = FocusScope.of(context);
     if (!currentFocus.hasPrimaryFocus) {
       currentFocus.unfocus();
     }
   Widget build(BuildContext context) {
     return Column(
       children: [
-        Padding(
-          padding: const EdgeInsets.all(8.0),
+        const Padding(
+          padding: EdgeInsets.all(8.0),
           child: Align(
             alignment: Alignment.centerLeft,
             child: Text(
           ),
         ),
         _buildListSupply(),
-        SizedBox(
+        const SizedBox(
           height: 8.0,
         ),
         _formEdit()

lib/presentation/screens/actions/nursery/bloc/expansion_list_bloc.dart

     ExpansionListEvent event,
   ) async* {
     if (event is AddNew) {
-      List<NurseryDetail> items = new List<NurseryDetail>();
-      for (int i = 0; i < event.items.length; i++) {
+      var items = <NurseryDetail>[];
+      for (var i = 0; i < event.items.length; i++) {
         var current = event.items[i];
         items.add(NurseryDetail.clone(current));
       }
       yield ExpansionListSuccess(items: items);
     } else if (event is DeleteItem) {
-      List<NurseryDetail> items = new List<NurseryDetail>();
-      for (int i = 0; i < event.items.length; i++) {
+      var items = <NurseryDetail>[];
+      for (var i = 0; i < event.items.length; i++) {
         var current = event.items[i];
         if (i == event.index) {
           //ignore
 
       yield ExpansionListSuccess(items: items);
     } else if (event is Update) {
-      List<NurseryDetail> items = new List<NurseryDetail>();
-      for (int i = 0; i < event.items.length; i++) {
+      var items = <NurseryDetail>[];
+      for (var i = 0; i < event.items.length; i++) {
         var current = event.items[i];
         if (i == event.index) {
           items.add(NurseryDetail.clone(event.item));

lib/presentation/screens/actions/nursery/bloc/expansion_list_event.dart

   final int index;
   final NurseryDetail item;
   final List<NurseryDetail> items;
-  Update({@required this.index, @required this.item, @required this.items});
+  Update({required this.index, required this.item, required this.items});
 }
 
 class AddNew extends ExpansionListEvent {
   final List<NurseryDetail> items;
-  AddNew({@required this.items});
+  AddNew({required this.items});
 }
 
 class DeleteItem extends ExpansionListEvent {
   final int index;
   final List<NurseryDetail> items;
-  DeleteItem({@required this.index, @required this.items});
+  DeleteItem({required this.index, required this.items});
 }

lib/presentation/screens/actions/nursery/bloc/expansion_list_state.dart

 
 class ExpansionListFailure extends ExpansionListState {
   final String errorString;
-  ExpansionListFailure({@required this.errorString});
+  ExpansionListFailure({required this.errorString});
 }
 
 class ExpansionListSuccess extends ExpansionListState {
   final List<NurseryDetail> items;
 
-  const ExpansionListSuccess({this.items});
+  const ExpansionListSuccess({required this.items});
 
-  ExpansionListSuccess copyWith({List<NurseryDetail> items}) {
+  ExpansionListSuccess copyWith({List<NurseryDetail>? items}) {
     return ExpansionListSuccess(items: items ?? this.items);
   }
 

lib/presentation/screens/actions/nursery/sc_edit_action_nursery.dart

 class EditActionNurseryScreen extends StatefulWidget {
   final int cropId;
   final bool isEdit;
-  final int activityId;
-  EditActionNurseryScreen(
-      {@required this.cropId, this.isEdit = false, this.activityId});
+  final int? activityId;
+  EditActionNurseryScreen({required this.cropId, this.isEdit = false, this.activityId});
   @override
   _EditActionNurseryState createState() => _EditActionNurseryState();
 }
 
 class _EditActionNurseryState extends State<EditActionNurseryScreen> {
-  final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
+  final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
   final _repository = Repository();
   GlobalKey<FormState> _formKey = GlobalKey();
   GlobalKey<FormState> _formWorkerKey = GlobalKey();
   TextEditingController _trayNumberController = TextEditingController();
   final _executeByController = TextEditingController();
   DateTime executeTime = DateTime.now();
-  List<NurseryDetail> currentNurseryDetail = List<NurseryDetail>();
+  List<NurseryDetail> currentNurseryDetail = <NurseryDetail>[];
   int currentIndexUpdate = -1;
   bool isResetForm = true;
   final changeSupply = Get.put(ChangeSupply());
   int selectedSupplyId = -1;
-  List<String> filePaths = List<String>();
+  List<String> filePaths = <String>[];
   var changeFileController = Get.put(ChangeFileController());
 
   Future<Null> getSharedPrefs() async {
     getSharedPrefs();
     changeSupply.initValue();
     changeFileController.initValue();
-    _nursery.nurseryDetail = new List<NurseryDetail>();
+    _nursery.nurseryDetail = <NurseryDetail>[];
     _nursery.cropId = widget.cropId;
   }
 
   _validateInputs() async {
-    if (_formKey.currentState.validate()) {
-      _formKey.currentState.save();
+    if (_formKey.currentState!.validate()) {
+      _formKey.currentState!.save();
       LoadingDialog.showLoadingDialog(context);
       _nursery.nurseryDetail = currentNurseryDetail;
       filePaths = Get.find<ChangeFileController>().newFiles;
     return WidgetFieldDateTimePicker(
         initDateTime: executeTime,
         onUpdateDateTime: (selectedDate) {
-          _nursery.executeDate =
-              selectedDate.convertLocalDateTimeToStringUtcDateTime();
+          _nursery.executeDate = selectedDate.convertLocalDateTimeToStringUtcDateTime();
         });
   }
 
   Widget _btnSelectSubstrates() {
     return FlatButton(
-        padding: EdgeInsets.only(top: 0.0, right: 0.0, bottom: 0.0, left: 0.0),
+        padding: const EdgeInsets.only(top: 0.0, right: 0.0, bottom: 0.0, left: 0.0),
         onPressed: () {
           Navigator.of(context)
               .push(MaterialPageRoute(
           });
         },
         child: Container(
-            padding:
-                EdgeInsets.only(top: 0.0, right: 0.0, bottom: 10.5, left: 0.0),
-            decoration: BoxDecoration(
+            padding: const EdgeInsets.only(top: 0.0, right: 0.0, bottom: 10.5, left: 0.0),
+            decoration: const BoxDecoration(
               border: kBorderTextField,
             ),
             child: Row(
               children: [
                 GetBuilder<ChangeSupply>(
                     builder: (_) => Expanded(
-                        child: Text(
-                            changeSupply.selectedSupplyName == null
-                                ? "Loại giá thể"
-                                : changeSupply.selectedSupplyName.toString(),
-                            style: TextStyle(
-                                fontSize: 14.0, color: Colors.black87)))),
-                Icon(
+                        child: Text(changeSupply.selectedSupplyName == null ? "Loại giá thể" : changeSupply.selectedSupplyName.toString(),
+                            style: const TextStyle(fontSize: 14.0, color: Colors.black87)))),
+                const Icon(
                   Icons.arrow_drop_down,
                   color: Colors.grey,
                 ),
       hintValue: "Chiều dài mầm",
       textController: _seedLengthController,
       onSaved: (newValue) {
-        _nursery.seedLength = newValue.parseDoubleThousand();
+        _nursery.seedLength = (newValue ?? '0').parseDoubleThousand();
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "Số lượng hạt gieo",
       textController: _quantityController,
       onSaved: (newValue) {
-        _nursery.quantity = newValue.parseDoubleThousand();
+        _nursery.quantity = (newValue ?? '0').parseDoubleThousand();
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
       hintValue: "Thời gian ngâm hạt",
       textController: _seedIncubationTimeController,
       onSaved: (newValue) {
-        _nursery.seedIncubationTime = newValue.parseDoubleThousand();
+        _nursery.seedIncubationTime = (newValue ?? '0').parseDoubleThousand();
       },
+      onChanged: (_) {},
+      validator: (_) {},
     );
   }
 
   Widget _executeByField() {
     return TextFormField(
       keyboardType: TextInputType.text,
-      decoration: InputDecoration(labelText: "Người thực hiện"),
+      decoration: const InputDecoration(labelText: "Người thực hiện"),
       enabled: false,
       controller: _executeByController,
       onSaved: (newValue) {},
   Widget _btnAddWorker() {
     //TODO :check flow error sua item -> xoa list -> bam nut them
     return Builder(builder: (context) {
-      return BlocConsumer<StatusAddFormBloc, StatusAddFormState>(
-          listener: (context, state) {
+      return BlocConsumer<StatusAddFormBloc, StatusAddFormState>(listener: (context, state) {
         if (state is Edit) {
           isResetForm = false;
-          _workerNameController.text = state.nurseryDetail.workerName;
-          _trayNumberController.text = state.nurseryDetail.trayNumber;
+          _workerNameController.text = state.nurseryDetail.workerName ?? '';
+          _trayNumberController.text = state.nurseryDetail.trayNumber ?? '';
         } else if (state is Delete) {
           if (currentIndexUpdate == state.index) {
             isResetForm = true;
           child: Column(
             children: [
               Container(
-                padding: EdgeInsets.all(8.0),
-                margin: EdgeInsets.all(8),
+                padding: const EdgeInsets.all(8.0),
+                margin: const EdgeInsets.all(8),
                 decoration: BoxDecoration(
-                    shape: BoxShape.rectangle,
-                    borderRadius: BorderRadius.circular(10),
-                    color: Colors.white,
-                    border: Border.all(color: Colors.grey[300])),
+                    shape: BoxShape.rectangle, borderRadius: BorderRadius.circular(10), color: Colors.white, border: Border.all(color: Colors.grey)),
                 child: Column(
                   children: [
                     TextFormField(
                       keyboardType: TextInputType.text,
                       controller: _workerNameController,
-                      decoration: InputDecoration(labelText: "Tên công nhân *"),
+                      decoration: const InputDecoration(labelText: "Tên công nhân *"),
                       validator: (value) {
-                        return Validators.validateNotNullOrEmpty(
-                            value, label_validate_input_empty);
+                        return Validators.validateNotNullOrEmpty(value ?? '', label_validate_input_empty);
                       },
                       onSaved: (newValue) {},
                     ),
                     TextFormField(
                       keyboardType: TextInputType.text,
                       controller: _trayNumberController,
-                      decoration: InputDecoration(labelText: "Ươm khây số"),
+                      decoration: const InputDecoration(labelText: "Ươm khây số"),
                       onSaved: (newValue) {},
                     ),
                   ],
                 ),
               ),
               Container(
-                margin: EdgeInsets.all(8),
+                margin: const EdgeInsets.all(8),
                 child: Row(
                   mainAxisAlignment: MainAxisAlignment.spaceBetween,
                   mainAxisSize: MainAxisSize.max,
                   children: [
                     isResetForm
                         ? Container()
-                        : OutlineButton(
-                            shape: RoundedRectangleBorder(
-                                borderRadius: new BorderRadius.circular(8.0)),
-                            child: Text("Huỷ"),
-                            onPressed: () {
+                        : InkWell(
+                            // shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8.0)),
+                            child: const Text("Huỷ"),
+                            onTap: () {
                               context.bloc<StatusAddFormBloc>().add(Reset());
                             }),
                     Expanded(
                       child: FlatButton(
                           onPressed: () {
-                            if (_formWorkerKey.currentState.validate()) {
-                              _formWorkerKey.currentState.save();
-                              if (Validators.stringNotNullOrEmpty(
-                                  _workerNameController.text)) {
-                                NurseryDetail _nurseryDetail = NurseryDetail()
+                            if (_formWorkerKey.currentState!.validate()) {
+                              _formWorkerKey.currentState!.save();
+                              if (Validators.stringNotNullOrEmpty(_workerNameController.text)) {
+                                var _nurseryDetail = NurseryDetail()
                                   ..workerName = _workerNameController.text
                                   ..trayNumber = _trayNumberController.text;
 
                                 if (state is Edit) {
-                                  context.bloc<ExpansionListBloc>().add(Update(
-                                      index: state.index,
-                                      item: _nurseryDetail,
-                                      items: state.items));
+                                  context.bloc<ExpansionListBloc>().add(
+                                        Update(
+                                          index: state.index,
+                                          item: _nurseryDetail,
+                                          items: state.items ?? <NurseryDetail>[],
+                                        ),
+                                      );
                                 } else {
-                                  currentNurseryDetail.insert(
-                                      0, _nurseryDetail);
-                                  BlocProvider.of<ExpansionListBloc>(context)
-                                      .add(AddNew(items: currentNurseryDetail));
+                                  currentNurseryDetail.insert(0, _nurseryDetail);
+                                  BlocProvider.of<ExpansionListBloc>(context).add(AddNew(items: currentNurseryDetail));
                                 }
                                 context.bloc<StatusAddFormBloc>().add(Reset());
                               } else {
-                                Utils.showSnackBarWarning(
-                                    message: "Vui lòng nhập tên công nhân");
+                                Utils.showSnackBarWarning(message: "Vui lòng nhập tên công nhân");
                               }
                             } else {
                               //
-                              if (!Validators.stringNotNullOrEmpty(
-                                  _workerNameController.text)) {
-                                Utils.showSnackBarWarning(
-                                    message: "Vui lòng nhập tên công nhân");
+                              if (!Validators.stringNotNullOrEmpty(_workerNameController.text)) {
+                                Utils.showSnackBarWarning(message: "Vui lòng nhập tên công nhân");
                               }
                             }
                           },
                           child: Text(
-                            (state is Edit)
-                                ? "Sửa người thực hiện"
-                                : "+ Thêm người thực hiện",
-                            style: TextStyle(color: Colors.blue),
+                            (state is Edit) ? "Sửa người thực hiện" : "+ Thêm người thực hiện",
+                            style: const TextStyle(color: Colors.blue),
                           )),
                     )
                   ],
 
   Widget _buildListAddWorker() {
     return Builder(builder: (context) {
-      return BlocBuilder<ExpansionListBloc, ExpansionListState>(
-          builder: (context, state) {
+      return BlocBuilder<ExpansionListBloc, ExpansionListState>(builder: (context, state) {
         if (state is ExpansionListSuccess) {
           currentNurseryDetail = state.items;
           if (currentNurseryDetail.isEmpty) {
           return Container(
               height: 70,
               child: ListView.builder(
-                  physics: ClampingScrollPhysics(),
+                  physics: const ClampingScrollPhysics(),
                   scrollDirection: Axis.horizontal,
                   shrinkWrap: true,
                   itemCount: currentNurseryDetail.length,
                           print("edit worker");
                           currentIndexUpdate = index;
                           context.bloc<StatusAddFormBloc>().add(Changed(
-                              status: CRUDStatus.edit,
-                              index: index,
-                              nurseryDetail: currentNurseryDetail[index],
-                              items: currentNurseryDetail));
+                              status: CRUDStatus.edit, index: index, nurseryDetail: currentNurseryDetail[index], items: currentNurseryDetail));
                         },
                         child: Card(
                             child: Stack(
                           alignment: Alignment.bottomCenter,
-                          overflow: Overflow.visible,
+                          // overflow: Overflow.visible,
                           children: <Widget>[
                             Positioned(
                                 child: ClipRRect(
                               borderRadius: BorderRadius.circular(8),
                               child: Container(
-                                padding: EdgeInsets.all(4),
+                                padding: const EdgeInsets.all(4),
                                 width: 120,
                                 child: Column(
                                   mainAxisAlignment: MainAxisAlignment.center,
                                   children: [
-                                    SizedBox(
+                                    const SizedBox(
                                       height: 12.0,
                                     ),
                                     Flexible(
-                                      child: Text(
-                                          currentNurseryDetail[index]
-                                                  .workerName ??
-                                              "",
-                                          overflow: TextOverflow.ellipsis,
-                                          maxLines: 1),
+                                      child: Text(currentNurseryDetail[index].workerName ?? "", overflow: TextOverflow.ellipsis, maxLines: 1),
                                     ),
-                                    Validators.stringNotNullOrEmpty(
-                                            currentNurseryDetail[index]
-                                                .trayNumber)
-                                        ? Flexible(
-                                            child: Text(
-                                                currentNurseryDetail[index]
-                                                        .trayNumber ??
-                                                    ""))
-                                        : SizedBox()
+                                    Validators.stringNotNullOrEmpty(currentNurseryDetail[index].trayNumber ?? '')
+                                        ? Flexible(child: Text(currentNurseryDetail[index].trayNumber ?? ""))
+                                        : const SizedBox()
                                   ],
                                 ),
                               ),
                               top: -10,
                               right: -10,
                               child: IconButton(
-                                  icon: Icon(
+                                  icon: const Icon(
                                     Icons.cancel,
                                     color: Colors.redAccent,
                                   ),
                                   onPressed: () {
                                     print("Delete worker");
-                                    context.bloc<ExpansionListBloc>().add(
-                                        DeleteItem(
-                                            index: index,
-                                            items: currentNurseryDetail));
-                                    context.bloc<StatusAddFormBloc>().add(
-                                        Changed(
-                                            status: CRUDStatus.delete,
-                                            index: index,
-                                            nurseryDetail:
-                                                currentNurseryDetail[index],
-                                            items: currentNurseryDetail));
+                                    context.bloc<ExpansionListBloc>().add(DeleteItem(index: index, items: currentNurseryDetail));
+                                    context.bloc<StatusAddFormBloc>().add(Changed(
+                                        status: CRUDStatus.delete,
+                                        index: index,
+                                        nurseryDetail: currentNurseryDetail[index],
+                                        items: currentNurseryDetail));
                                   }),
                             )
                           ],
               appBar: AppBarWidget(
                 isBack: true,
                 action: InkWell(
-                  child: Text(
+                  child: const Text(
                     'Huỷ',
-                    style: TextStyle(
-                        color: Colors.red, fontWeight: FontWeight.normal),
+                    style: TextStyle(color: Colors.red, fontWeight: FontWeight.normal),
                   ),
                   onTap: () {
                     if (Get.isSnackbarOpen) Get.back();
                       create: (context) => StatusAddFormBloc(),
                     ),
                     BlocProvider<ActionDetailBloc>(
-                        create: (context) =>
-                            ActionDetailBloc(repository: Repository())
-                              ..add(FetchData(
-                                  isNeedFetchData: widget.isEdit,
-                                  apiActivity: ConstCommon.apiDetailNursery,
-                                  activityId: widget.activityId))),
+                      create: (context) => ActionDetailBloc(repository: Repository())
+                        ..add(
+                          FetchData(
+                            isNeedFetchData: widget.isEdit,
+                            apiActivity: ConstCommon.apiDetailNursery,
+                            activityId: widget.activityId ?? -1,
+                          ),
+                        ),
+                    ),
                     BlocProvider<MediaHelperBloc>(
-                      create: (context) =>
-                          MediaHelperBloc()..add(ChangeListMedia(items: [])),
+                      create: (context) => MediaHelperBloc()..add(ChangeListMedia(items: [])),
                     )
                   ],
                       child: Form(
                           key: _formKey,
-                          autovalidate: _autoValidate,
+                          // autovalidate: _autoValidate,
                           child: SafeArea(
                             child: SingleChildScrollView(
-                              child: BlocConsumer<ActionDetailBloc,
-                                  ActionDetailState>(
+                              child: BlocConsumer<ActionDetailBloc, ActionDetailState>(
                                 listener: (context, state) async {
                                   if (state is ActionDetailFailure) {
                                     print("fail");
                                     print("success");
                                     print(state.item);
                                     _nursery = Nursery.fromJson(state.item);
-                                    _seedLengthController.text = _nursery
-                                        .seedLength
-                                        .formatNumtoStringDecimal();
-                                    _quantityController.text = _nursery.quantity
-                                        .formatNumtoStringDecimal();
-                                    _seedIncubationTimeController.text =
-                                        _nursery.seedIncubationTime
-                                            .formatNumtoStringDecimal();
-                                    _descriptionController.text =
-                                        _nursery.description;
-                                    _executeByController.text =
-                                        _nursery.executeBy;
-                                    Get.find<ChangeDateTimePicker>().change(_nursery
-                                        .executeDate
-                                        .convertStringServerDateTimeToLocalDateTime());
+                                    _seedLengthController.text = _nursery.seedLength?.formatNumtoStringDecimal() ?? '';
+                                    _quantityController.text = _nursery.quantity?.formatNumtoStringDecimal() ?? '';
+                                    _seedIncubationTimeController.text = _nursery.seedIncubationTime?.formatNumtoStringDecimal() ?? '';
+                                    _descriptionController.text = _nursery.description ?? '';
+                                    _executeByController.text = _nursery.executeBy ?? '';
+                                    Get.find<ChangeDateTimePicker>().change(
+                                      _nursery.executeDate?.convertStringServerDateTimeToLocalDateTime() ?? DateTime.now(),
+                                    );
                                     //Show media
-                                    if (Validators.stringNotNullOrEmpty(
-                                        _nursery.media)) {
+                                    if (Validators.stringNotNullOrEmpty(_nursery.media ?? '')) {
                                       BlocProvider.of<MediaHelperBloc>(context)
-                                          .add(ChangeListMedia(
-                                              items: UtilAction
-                                                  .convertFilePathToMedia(
-                                                      _nursery.media)));
+                                          .add(ChangeListMedia(items: UtilAction.convertFilePathToMedia(_nursery.media ?? '')));
                                     }
                                     //Show worker
-                                    if (_nursery.nurseryDetail.length > 0) {
-                                      BlocProvider.of<ExpansionListBloc>(
-                                              context)
-                                          .add(AddNew(
-                                              items: _nursery.nurseryDetail));
+                                    if (_nursery.nurseryDetail != null) {
+                                      if (_nursery.nurseryDetail!.length > 0) {
+                                        BlocProvider.of<ExpansionListBloc>(context).add(AddNew(items: _nursery.nurseryDetail!));
+                                      }
                                     }
                                     //change subStrates
+
                                     if (_nursery.substratesId != null) {
-                                      Get.find<ChangeSupply>()
-                                          .changeByIdAndName(
-                                              _nursery.substratesId,
-                                              _nursery.substrateName);
+                                      Get.find<ChangeSupply>().changeByIdAndName(_nursery.substratesId!.toInt(), _nursery.substrateName ?? '');
                                     }
                                   } else if (state is ActionDetailInitial) {
                                     print("init");
                                   return Column(
                                     children: [
                                       Padding(
-                                        padding: EdgeInsets.all(8),
+                                        padding: const EdgeInsets.all(8),
                                         child: Column(
-                                          crossAxisAlignment:
-                                              CrossAxisAlignment.start,
+                                          crossAxisAlignment: CrossAxisAlignment.start,
                                           children: <Widget>[
-                                            Text(
+                                            const Text(
                                               'Ươm',
-                                              style: TextStyle(
-                                                  fontWeight: FontWeight.w500,
-                                                  fontSize: 22),
+                                              style: TextStyle(fontWeight: FontWeight.w500, fontSize: 22),
                                             ),
-                                            SizedBox(
+                                            const SizedBox(
                                               height: 8.0,
                                             ),
                                             Container(
                                               width: double.infinity,
-                                              child: Text(
+                                              child: const Text(
                                                 "Ngày thực hiện *",
-                                                style: TextStyle(
-                                                    color: Colors.black54,
-                                                    fontSize: 13.0),
+                                                style: TextStyle(color: Colors.black54, fontSize: 13.0),
                                               ),
                                             ),
                                             _btnExecuteTimePicker(),
-                                            SizedBox(
+                                            const SizedBox(
                                               height: 8.0,
                                             ),
                                             Container(
                                               width: double.infinity,
-                                              child: Text(
+                                              child: const Text(
                                                 "Loại giá thể",
-                                                style: TextStyle(
-                                                    color: Colors.black54,
-                                                    fontSize: 13.0),
+                                                style: TextStyle(color: Colors.black54, fontSize: 13.0),
                                               ),
                                             ),
                                             _btnSelectSubstrates(),
-                                            SizedBox(
+                                            const SizedBox(
                                               height: 8.0,
                                             ),
                                             _seedLengthField(),
-                                            SizedBox(
+                                            const SizedBox(
                                               height: 8.0,
                                             ),
                                             _quantityField(),
-                                            SizedBox(
+                                            const SizedBox(
                                               height: 8.0,
                                             ),
                                             _seedIncubationTimeField(),
-                                            SizedBox(
+                                            const SizedBox(
                                               height: 8.0,
                                             ),
                                             _desciptionField(),
-                                            SizedBox(
+                                            const SizedBox(
                                               height: 8.0,
                                             ),
                                             _executeByField(),
-                                            SizedBox(
+                                            const SizedBox(
                                               height: 8.0,
                                             ),
                                           ],
                                         height: 16,
                                         color: Colors.grey[200],
                                       ),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _buildListAddWorker(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       _btnAddWorker(),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
                                       Container(
                                         height: 16,
                                         color: Colors.grey[200],
                                       ),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 8.0,
                                       ),
-                                      BlocBuilder<MediaHelperBloc,
-                                              MediaHelperState>(
-                                          builder: (context, state) {
+                                      BlocBuilder<MediaHelperBloc, MediaHelperState>(builder: (context, state) {
                                         if (state is MediaHelperSuccess) {
-                                          print("length: " +
-                                              state.items.length.toString());
+                                          print("length: " + state.items.length.toString());
                                           return WidgetMediaPicker(
                                               currentItems: state.items,
-                                              onChangeFiles: (newPathFiles,
-                                                  deletePathFiles) async {
-                                                Get.find<ChangeFileController>()
-                                                    .change(newPathFiles,
-                                                        deletePathFiles);
+                                              onChangeFiles: (newPathFiles, deletePathFiles) async {
+                                                Get.find<ChangeFileController>().change(newPathFiles, deletePathFiles);
                                               });
                                         } else {
-                                          return Center(
-                                              child:
-                                                  CircularProgressIndicator());
+                                          return const Center(child: CircularProgressIndicator());
                                         }
                                       }),
-                                      SizedBox(
+                                      const SizedBox(
                                         height: 16,
                                       ),
                                       Padding(
                                         child: ButtonWidget(
                                             title: 'CẬP NHẬT',
                                             onPressed: () {
-                                              FocusScopeNode currentFocus =
-                                                  FocusScope.of(context);
-                                              if (!currentFocus
-                                                  .hasPrimaryFocus) {
+                                              var currentFocus = FocusScope.of(context);
+                                              if (!currentFocus.hasPrimaryFocus) {
                                                 currentFocus.unfocus();
                                               }
-                                              if (!Validators
-                                                      .stringNotNullOrEmpty(
-                                                          _workerNameController
-                                                              .text) &&
-                                                  !Validators
-                                                      .stringNotNullOrEmpty(
-                                                          _trayNumberController
-                                                              .text)) {
+                                              if (!Validators.stringNotNullOrEmpty(_workerNameController.text) &&
+                                                  !Validators.stringNotNullOrEmpty(_trayNumberController.text)) {
                                                 _validateInputs();
                                               } else {
                                                 Utils.showDialog(
-                                                    title:
-                                                        "Tên công nhân hoặc khây trồng đang cập nhật",
-                                                    message:
-                                                        "Bạn có muốn cập nhật?",
+                                                    title: "Tên công nhân hoặc khây trồng đang cập nhật",
+                                                    message: "Bạn có muốn cập nhật?",
                                                     textConfirm: "Tiếp tục",
                                                     textCancel: "Xem lại",
                                                     onConfirm: () {