validate null or empty media

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

@@ -16,6 +16,7 @@ import 'package:farm_tpf/utils/const_common.dart';
 import 'package:farm_tpf/utils/const_string.dart';
 import 'package:farm_tpf/utils/const_style.dart';
 import 'package:farm_tpf/utils/pref.dart';
+import 'package:farm_tpf/utils/validators.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_datetime_picker/flutter_datetime_picker.dart';
@@ -391,7 +392,8 @@ class _EditActionCropStatusScreenState
                             executeTimeView = DateFormat("dd/MM/yyyy HH:mm")
                                 .format(executeTime);
                             //Show media
-                            if (_cropStatus.media.isNotEmpty) {
+                            if (Validators.stringNotNullOrEmpty(
+                                _cropStatus.media)) {
                               BlocProvider.of<MediaHelperBloc>(context).add(
                                   ChangeListMedia(
                                       items: UtilAction.convertFilePathToMedia(

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

@@ -360,7 +360,8 @@ class _EditActionDiseaseScreenState extends State<EditActionDiseaseScreen> {
                             executeTimeView = DateFormat("dd/MM/yyyy HH:mm")
                                 .format(executeTime);
                             //Show media
-                            if (_disease.media.isNotEmpty) {
+                            if (Validators.stringNotNullOrEmpty(
+                                _disease.media)) {
                               BlocProvider.of<MediaHelperBloc>(context).add(
                                   ChangeListMedia(
                                       items: UtilAction.convertFilePathToMedia(

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

@@ -17,6 +17,7 @@ import 'package:farm_tpf/utils/const_common.dart';
 import 'package:farm_tpf/utils/const_string.dart';
 import 'package:farm_tpf/utils/const_style.dart';
 import 'package:farm_tpf/utils/pref.dart';
+import 'package:farm_tpf/utils/validators.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_datetime_picker/flutter_datetime_picker.dart';
@@ -293,7 +294,8 @@ class _EditActionDungScreenState extends State<EditActionDungScreen> {
                                       DateFormat("dd/MM/yyyy HH:mm")
                                           .format(executeTime);
                                   //Show media
-                                  if (_dung.media.isNotEmpty) {
+                                  if (Validators.stringNotNullOrEmpty(
+                                      _dung.media)) {
                                     BlocProvider.of<MediaHelperBloc>(context)
                                         .add(ChangeListMedia(
                                             items: UtilAction

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

@@ -13,6 +13,7 @@ import 'package:farm_tpf/utils/const_common.dart';
 import 'package:farm_tpf/utils/const_string.dart';
 import 'package:farm_tpf/utils/const_style.dart';
 import 'package:farm_tpf/utils/pref.dart';
+import 'package:farm_tpf/utils/validators.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_datetime_picker/flutter_datetime_picker.dart';
@@ -240,7 +241,7 @@ class _EditActionEndScreenState extends State<EditActionEndScreen> {
                                   .format(executeTime);
                             } catch (_) {}
                             //Show media
-                            if (_end.media.isNotEmpty) {
+                            if (Validators.stringNotNullOrEmpty(_end.media)) {
                               BlocProvider.of<MediaHelperBloc>(context).add(
                                   ChangeListMedia(
                                       items: UtilAction.convertFilePathToMedia(

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

@@ -370,7 +370,8 @@ class _EditActionEnvironmentUpdateState
                             executeTimeView = DateFormat("dd/MM/yyyy HH:mm")
                                 .format(executeTime);
                             //Show media
-                            if (_environment.media.isNotEmpty) {
+                            if (Validators.stringNotNullOrEmpty(
+                                _environment.media)) {
                               BlocProvider.of<MediaHelperBloc>(context).add(
                                   ChangeListMedia(
                                       items: UtilAction.convertFilePathToMedia(

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

@@ -301,7 +301,8 @@ class _EditActionHarvestScreenState extends State<EditActionHarvestScreen> {
                                   .format(executeTime);
                             } catch (_) {}
                             //Show media
-                            if (_harvest.media.isNotEmpty) {
+                            if (Validators.stringNotNullOrEmpty(
+                                _harvest.media)) {
                               BlocProvider.of<MediaHelperBloc>(context).add(
                                   ChangeListMedia(
                                       items: UtilAction.convertFilePathToMedia(

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

@@ -18,6 +18,7 @@ import 'package:farm_tpf/utils/const_common.dart';
 import 'package:farm_tpf/utils/const_string.dart';
 import 'package:farm_tpf/utils/const_style.dart';
 import 'package:farm_tpf/utils/pref.dart';
+import 'package:farm_tpf/utils/validators.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_datetime_picker/flutter_datetime_picker.dart';
@@ -381,7 +382,8 @@ class _EditActionHarvestProcessScreenState
                                   .format(executeTime);
                             } catch (_) {}
                             //Show media
-                            if (_harvestProcess.media.isNotEmpty) {
+                            if (Validators.stringNotNullOrEmpty(
+                                _harvestProcess.media)) {
                               BlocProvider.of<MediaHelperBloc>(context).add(
                                   ChangeListMedia(
                                       items: UtilAction.convertFilePathToMedia(

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

@@ -543,7 +543,8 @@ class _EditActionNurseryState extends State<EditActionNurseryScreen> {
                                       DateFormat("dd/MM/yyyy HH:mm")
                                           .format(executeTime);
                                   //Show media
-                                  if (_nursery.media.isNotEmpty) {
+                                  if (Validators.stringNotNullOrEmpty(
+                                      _nursery.media)) {
                                     BlocProvider.of<MediaHelperBloc>(context)
                                         .add(ChangeListMedia(
                                             items: UtilAction

lib/presentation/screens/actions/other/sc_edit_action_other.dart

@@ -15,6 +15,7 @@ import 'package:farm_tpf/utils/const_common.dart';
 import 'package:farm_tpf/utils/const_string.dart';
 import 'package:farm_tpf/utils/const_style.dart';
 import 'package:farm_tpf/utils/pref.dart';
+import 'package:farm_tpf/utils/validators.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_datetime_picker/flutter_datetime_picker.dart';
@@ -298,7 +299,7 @@ class _EditActionOtherScreenState extends State<EditActionOtherScreen> {
                                   .format(executeTime);
                             } catch (_) {}
                             //Show media
-                            if (_other.media.isNotEmpty) {
+                            if (Validators.stringNotNullOrEmpty(_other.media)) {
                               BlocProvider.of<MediaHelperBloc>(context).add(
                                   ChangeListMedia(
                                       items: UtilAction.convertFilePathToMedia(

lib/presentation/screens/actions/packing/sc_edit_action_packing.dart

@@ -16,6 +16,7 @@ import 'package:farm_tpf/utils/const_common.dart';
 import 'package:farm_tpf/utils/const_string.dart';
 import 'package:farm_tpf/utils/const_style.dart';
 import 'package:farm_tpf/utils/pref.dart';
+import 'package:farm_tpf/utils/validators.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_datetime_picker/flutter_datetime_picker.dart';
@@ -364,7 +365,8 @@ class _EditActionPackingScreenState extends State<EditActionPackingScreen> {
                                   .format(executeTime);
                             } catch (_) {}
                             //Show media
-                            if (_packing.media.isNotEmpty) {
+                            if (Validators.stringNotNullOrEmpty(
+                                _packing.media)) {
                               BlocProvider.of<MediaHelperBloc>(context).add(
                                   ChangeListMedia(
                                       items: UtilAction.convertFilePathToMedia(

lib/presentation/screens/actions/plant/sc_edit_action_plant.dart

@@ -279,7 +279,8 @@ class _EditActionPlantScreenState extends State<EditActionPlantScreen> {
                                       DateFormat("dd/MM/yyyy HH:mm")
                                           .format(executeTime);
                                   //Show media
-                                  if (_plant.media.isNotEmpty) {
+                                  if (Validators.stringNotNullOrEmpty(
+                                      _plant.media)) {
                                     BlocProvider.of<MediaHelperBloc>(context)
                                         .add(ChangeListMedia(
                                             items: UtilAction

lib/presentation/screens/actions/sell/sc_edit_action_sell.dart

@@ -376,7 +376,7 @@ class _EditActionSellScreenState extends State<EditActionSellScreen> {
                                   .format(executeTime);
                             } catch (_) {}
                             //Show media
-                            if (_sell.media.isNotEmpty) {
+                            if (Validators.stringNotNullOrEmpty(_sell.media)) {
                               BlocProvider.of<MediaHelperBloc>(context).add(
                                   ChangeListMedia(
                                       items: UtilAction.convertFilePathToMedia(

lib/presentation/screens/actions/spraying/sc_edit_action_spraying.dart

@@ -17,6 +17,7 @@ import 'package:farm_tpf/utils/const_common.dart';
 import 'package:farm_tpf/utils/const_string.dart';
 import 'package:farm_tpf/utils/const_style.dart';
 import 'package:farm_tpf/utils/pref.dart';
+import 'package:farm_tpf/utils/validators.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_datetime_picker/flutter_datetime_picker.dart';
@@ -343,7 +344,8 @@ class _EditActionSprayingScreenState extends State<EditActionSprayingScreen> {
                                   } catch (_) {}
 
                                   //Show media
-                                  if (_spraying.media.isNotEmpty) {
+                                  if (Validators.stringNotNullOrEmpty(
+                                      _spraying.media)) {
                                     BlocProvider.of<MediaHelperBloc>(context)
                                         .add(ChangeListMedia(
                                             items: UtilAction

lib/presentation/screens/actions/use_water/sc_edit_action_user_water.dart

@@ -299,7 +299,8 @@ class _EditActionUseWaterScreenState extends State<EditActionUseWaterScreen> {
                                 .initWithSelectedByName(_useWater.waterType);
 
                             //Show media
-                            if (_useWater.media.isNotEmpty) {
+                            if (Validators.stringNotNullOrEmpty(
+                                _useWater.media)) {
                               BlocProvider.of<MediaHelperBloc>(context).add(
                                   ChangeListMedia(
                                       items: UtilAction.convertFilePathToMedia(