scan barcode screen

android/app/build.gradle

     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "com.example.farm_tpf"
-        minSdkVersion 16
+        minSdkVersion 18
         targetSdkVersion 28
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName

android/app/src/main/AndroidManifest.xml

          additional functionality it is fine to subclass or reimplement
          FlutterApplication and put your custom class here. -->
          <uses-permission android:name="android.permission.INTERNET"/>
+         <uses-permission android:name="android.permission.CAMERA" />
     <application
         android:name="io.flutter.app.FlutterApplication"
         android:label="farm_tpf"

android/build.gradle

 buildscript {
-    ext.kotlin_version = '1.3.50'
+    ext.kotlin_version = '1.3.61'
     repositories {
         google()
         jcenter()

ios/Podfile.lock

 PODS:
+  - barcode_scan (0.0.1):
+    - Flutter
+    - MTBBarcodeScanner
+    - SwiftProtobuf
   - Flutter (1.0.0)
+  - MTBBarcodeScanner (5.0.11)
   - path_provider_linux (0.0.1):
     - Flutter
   - shared_preferences (0.0.1):
     - Flutter
   - shared_preferences_web (0.0.1):
     - Flutter
+  - SwiftProtobuf (1.11.0)
 
 DEPENDENCIES:
+  - barcode_scan (from `.symlinks/plugins/barcode_scan/ios`)
   - Flutter (from `Flutter`)
   - path_provider_linux (from `.symlinks/plugins/path_provider_linux/ios`)
   - shared_preferences (from `.symlinks/plugins/shared_preferences/ios`)
   - shared_preferences_macos (from `.symlinks/plugins/shared_preferences_macos/ios`)
   - shared_preferences_web (from `.symlinks/plugins/shared_preferences_web/ios`)
 
+SPEC REPOS:
+  trunk:
+    - MTBBarcodeScanner
+    - SwiftProtobuf
+
 EXTERNAL SOURCES:
+  barcode_scan:
+    :path: ".symlinks/plugins/barcode_scan/ios"
   Flutter:
     :path: Flutter
   path_provider_linux:
     :path: ".symlinks/plugins/shared_preferences_web/ios"
 
 SPEC CHECKSUMS:
+  barcode_scan: a5c27959edfafaa0c771905bad0b29d6d39e4479
   Flutter: 0e3d915762c693b495b44d77113d4970485de6ec
+  MTBBarcodeScanner: f453b33c4b7dfe545d8c6484ed744d55671788cb
   path_provider_linux: 4d630dc393e1f20364f3e3b4a2ff41d9674a84e4
   shared_preferences: af6bfa751691cdc24be3045c43ec037377ada40d
   shared_preferences_linux: afefbfe8d921e207f01ede8b60373d9e3b566b78
   shared_preferences_macos: f3f29b71ccbb56bf40c9dd6396c9acf15e214087
   shared_preferences_web: 141cce0c3ed1a1c5bf2a0e44f52d31eeb66e5ea9
+  SwiftProtobuf: f889fe5772f90ef7d7b8aac352d1fddf39650713
 
 PODFILE CHECKSUM: c34e2287a9ccaa606aeceab922830efb9a6ff69a
 

ios/Runner.xcodeproj/project.pbxproj

 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 46;
+	objectVersion = 50;
 	objects = {
 
 /* Begin PBXBuildFile section */
 				1BA1D19EF353DFCE335E0C1F /* Pods-Runner.release.xcconfig */,
 				95FEBA268448B96856A798E7 /* Pods-Runner.profile.xcconfig */,
 			);
-			name = Pods;
 			path = Pods;
 			sourceTree = "<group>";
 		};
 			buildActionMask = 2147483647;
 			files = (
 			);
-			inputPaths = (
-				"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks.sh",
-				"${PODS_ROOT}/../Flutter/Flutter.framework",
-				"${BUILT_PRODUCTS_DIR}/shared_preferences/shared_preferences.framework",
+			inputFileListPaths = (
+				"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks-${CONFIGURATION}-input-files.xcfilelist",
 			);
 			name = "[CP] Embed Pods Frameworks";
-			outputPaths = (
-				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/Flutter.framework",
-				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/shared_preferences.framework",
+			outputFileListPaths = (
+				"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks-${CONFIGURATION}-output-files.xcfilelist",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				DEVELOPMENT_TEAM = C3DTD2JH94;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",
 				);
 				INFOPLIST_FILE = Runner/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
 				LIBRARY_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SUPPORTED_PLATFORMS = iphoneos;
-				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
+				SWIFT_COMPILATION_MODE = wholemodule;
+				SWIFT_OPTIMIZATION_LEVEL = "-O";
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;
 			};
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				DEVELOPMENT_TEAM = C3DTD2JH94;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",
 				);
 				INFOPLIST_FILE = Runner/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
 				LIBRARY_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				DEVELOPMENT_TEAM = C3DTD2JH94;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",
 				);
 				INFOPLIST_FILE = Runner/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
 				LIBRARY_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",

ios/Runner/Info.plist

 	</array>
 	<key>UIViewControllerBasedStatusBarAppearance</key>
 	<false/>
+	<!-- Camera Permission -->
+    <key>NSCameraUsageDescription</key>
+    <string>Camera permission is required for barcode scanning.</string>
 </dict>
 </plist>

lib/presentation/custom_widgets/widget_toast.dart

 
 class WidgetToast extends StatelessWidget {
   String message;
-  WidgetToast({@required this.message});
+  Color color = Colors.greenAccent;
+  WidgetToast({@required this.message, this.color});
 
   @override
   Widget build(BuildContext context) {
       padding: const EdgeInsets.symmetric(horizontal: 24.0, vertical: 12.0),
       decoration: BoxDecoration(
         borderRadius: BorderRadius.circular(25.0),
-        color: Colors.greenAccent,
+        color: color,
       ),
       child: Row(
         mainAxisSize: MainAxisSize.min,

lib/presentation/screens/scan_barcode/sc_scan_barcode.dart

+import 'dart:io' show Platform;
+
+import 'package:barcode_scan/barcode_scan.dart';
+import 'package:farm_tpf/presentation/custom_widgets/widget_toast.dart';
+import 'package:farm_tpf/presentation/screens/home/home.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:fluttertoast/fluttertoast.dart';
+
+class ScanBarcodeScreen extends StatefulWidget {
+  @override
+  _ScanBarcodeScreenState createState() => _ScanBarcodeScreenState();
+}
+
+class _ScanBarcodeScreenState extends State<ScanBarcodeScreen> {
+  ScanResult scanResult;
+
+  var _aspectTolerance = 0.00;
+  var _selectedCamera = -1;
+  var _useAutoFocus = true;
+  var _autoEnableFlash = false;
+  final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
+  FlutterToast flutterToast;
+
+  @override
+  // ignore: type_annotate_public_apis
+  initState() {
+    super.initState();
+    flutterToast = FlutterToast(context);
+    scan();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      key: _scaffoldKey,
+      appBar: AppBar(
+        title: Text("Quét mã QR"),
+      ),
+      body: Center(
+        child: scanResult == null ? Container() : Text(scanResult?.rawContent),
+      ),
+    );
+  }
+
+  Future scan() async {
+    try {
+      var options = ScanOptions(
+        strings: {
+          "cancel": "Huỷ",
+          "flash_on": "Bật flash",
+          "flash_off": "Tắt flash",
+        },
+        useCamera: _selectedCamera,
+        autoEnableFlash: _autoEnableFlash,
+        android: AndroidOptions(
+          aspectTolerance: _aspectTolerance,
+          useAutoFocus: _useAutoFocus,
+        ),
+      );
+      var result = await BarcodeScanner.scan(options: options);
+      setState(() {
+        scanResult = result;
+        if (1 != 1) {
+          Navigator.of(context).pop();
+          Navigator.of(context)
+              .push(MaterialPageRoute(builder: (_) => HomePage()));
+        } else {
+          flutterToast.showToast(
+              child:
+                  WidgetToast(message: "Mã QR không đúng", color: Colors.red));
+          Navigator.of(context).pop();
+        }
+      });
+    } on PlatformException catch (e) {
+      var result = ScanResult(
+        type: ResultType.Error,
+        format: BarcodeFormat.unknown,
+      );
+
+      if (e.code == BarcodeScanner.cameraAccessDenied) {
+        setState(() {
+          result.rawContent = 'Vui lòng cấp quyền truy cập camera';
+        });
+      } else {
+        result.rawContent = 'Vui lòng cấp quyền truy cập camera.';
+      }
+      setState(() {
+        scanResult = result;
+      });
+      flutterToast.showToast(
+          child: WidgetToast(
+              message: "Vui lòng cấp quyền truy cập camera.",
+              color: Colors.red));
+      Navigator.of(context).pop();
+    }
+  }
+}

lib/presentation/screens/slide_menu/home_drawer.dart

 
   void setdDrawerListArray() {
     drawerList = <DrawerList>[
+      DrawerList(
+          index: DrawerIndex.ScanBarcode,
+          labelName: "Quét mã QR",
+          icon: Icon(Icons.scanner)),
       DrawerList(
         index: DrawerIndex.Home,
-        labelName: 'Trang chủ',
+        labelName: 'Danh sách lô',
         icon: Icon(Icons.home),
       ),
       DrawerList(
   }
 }
 
-enum DrawerIndex { Home, Setting }
+enum DrawerIndex { ScanBarcode, Home, Setting }
 
 class DrawerList {
   DrawerList({

lib/presentation/screens/slide_menu/navigation_home_screen.dart

 import 'package:farm_tpf/presentation/screens/home/home.dart';
 import 'package:farm_tpf/presentation/screens/profile/sc_update_profile.dart';
+import 'package:farm_tpf/presentation/screens/scan_barcode/sc_scan_barcode.dart';
 import 'package:farm_tpf/utils/const_color.dart';
 import 'package:flutter/material.dart';
 
         setState(() {
           screenView = UpdateProfileScreen();
         });
+      } else if (drawerIndex == DrawerIndex.ScanBarcode) {
+        Navigator.of(context)
+            .push(MaterialPageRoute(builder: (_) => ScanBarcodeScreen()));
+        // setState(() {
+        //   screenView = ScanBarcodeScreen();
+        // });
       } else {
         //do in your way......
       }

pubspec.lock

       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.4.1"
+  barcode_scan:
+    dependency: "direct main"
+    description:
+      name: barcode_scan
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.1"
   bloc:
     dependency: transitive
     description:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "3.0.13"
+  protobuf:
+    dependency: transitive
+    description:
+      name: protobuf
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.1"
   provider:
     dependency: transitive
     description:

pubspec.yaml

   fluttertoast: ^6.0.1
   pattern_formatter: ^1.0.2
   rxdart: ^0.23.0
+  barcode_scan: ^3.0.1
 
 dev_dependencies:
   flutter_test: