Migrating qr_code_scanner to mobile_scanner in talawa mobile

android/app/proguard-rules.pro

@@ -0,0 +1,4 @@
+# Please add these rules to your existing keep rules in order to suppress warnings.
+# This is generated automatically by the Android Gradle plugin.
+-dontwarn org.bouncycastle.jce.provider.BouncyCastleProvider
+-dontwarn org.bouncycastle.pqc.jcajce.provider.BouncyCastlePQCProvider

android/gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-all.zip

android/settings.gradle

@@ -19,7 +19,7 @@ pluginManagement {
 
 plugins {
     id "dev.flutter.flutter-plugin-loader" version "1.0.2"
-    id "com.android.application" version '7.3.0' apply false
+    id "com.android.application" version '8.1.1' apply false
     id "org.jetbrains.kotlin.android" version "1.8.10" apply false
     id("com.google.gms.google-services") version "4.4.1" apply false
 

devtools_options.yaml

@@ -0,0 +1,3 @@
+description: This file stores settings for Dart & Flutter DevTools.
+documentation: https://docs.flutter.dev/tools/devtools/extensions#configure-extension-enablement-states
+extensions:

lib/locator.dart

@@ -101,6 +101,7 @@ final actionHandlerService = locator<ActionHandlerService>();
 ///
 /// **returns**:
 ///   None
+
 Future<void> setupLocator() async {
   locator.registerSingleton(DataBaseMutationFunctions());
 

lib/splash_screen.dart

@@ -12,12 +12,18 @@ import 'package:talawa/utils/app_localization.dart';
 
 /// This widget return the SplashScreen. Splash Screen is the first screen that we see when we run our application. It is also known as Launch Screen.
 class SplashScreen extends StatefulWidget {
-  const SplashScreen({required Key key, this.mainScreenIndex = 0})
-      : super(key: key);
+  const SplashScreen({
+    required Key key,
+    this.mainScreenIndex = 0,
+    this.isTesting = false,
+  }) : super(key: key);
 
   /// This is required if url requires us to push different Screen to Home Screen.
   final int mainScreenIndex;
 
+  /// for testing purpose.
+  final bool isTesting;
+
   @override
   _SplashScreenState createState() => _SplashScreenState();
 }
@@ -206,6 +212,8 @@ class _SplashScreenState extends State<SplashScreen> {
   /// **returns**:
   ///   None
   void _handleUserLogIn(bool userLoggedIn) {
+    print(widget.isTesting);
+    if (widget.isTesting) return;
     Future.delayed(const Duration(milliseconds: 750)).then((value) async {
       final pushReplacementScreen = navigationService.pushReplacementScreen;
       if (!userLoggedIn) {
@@ -239,9 +247,9 @@ class _SplashScreenState extends State<SplashScreen> {
   }
 
   @override
-  void dispose() {
-    _sub.cancel();
+  Future<void> dispose() async {
     super.dispose();
+    await _sub.cancel();
   }
 
   @override

lib/view_model/pre_auth_view_models/select_organization_view_model.dart

@@ -2,7 +2,8 @@
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:graphql_flutter/graphql_flutter.dart';
-import 'package:qr_code_scanner/qr_code_scanner.dart';
+// import 'package:qr_code_scanner/qr_code_scanner.dart';
+import 'package:mobile_scanner/mobile_scanner.dart';
 import 'package:talawa/constants/routing_constants.dart';
 import 'package:talawa/enums/enums.dart';
 import 'package:talawa/locator.dart';

lib/view_model/pre_auth_view_models/set_url_view_model.dart

@@ -1,6 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:hive/hive.dart';
-import 'package:qr_code_scanner/qr_code_scanner.dart';
+import 'package:mobile_scanner/mobile_scanner.dart';
 import 'package:qr_flutter/qr_flutter.dart';
 import 'package:talawa/constants/app_strings.dart';
 import 'package:talawa/enums/enums.dart';
@@ -56,6 +56,9 @@
   /// qrValidator.
   AutovalidateMode validate = AutovalidateMode.disabled;
 
+  /// qrController.
+  final MobileScannerController controller = MobileScannerController();
+
   /// This function initialises the variables.
   ///
   /// **params**:
@@ -208,11 +211,13 @@
   ///
   /// **params**:
   /// * `context`: BuildContext
+  /// * `mockController`: MobileScannerController
   ///
   /// **returns**:
   ///   None
 
-  void scanQR(BuildContext context) {
+  void scanQR(BuildContext context, {MobileScannerController? mockController}) {
+    debugPrint('Scan QR called');
     showModalBottomSheet(
       context: context,
       barrierColor: Colors.transparent,
@@ -239,16 +244,30 @@
                 SizedBox(
                   height: 250,
                   width: 250,
-                  child: QRView(
-                    key: qrKey,
-                    onQRViewCreated: _onQRViewCreated,
-                    overlay: QrScannerOverlayShape(
-                      borderRadius: 10,
-                      borderLength: 20,
-                      borderWidth: 10,
-                      cutOutSize: 250,
-                    ),
-                    /*overlayMargin: EdgeInsets.all(50)*/
+                  child: MobileScanner(
+                    fit: BoxFit.contain,
+                    controller: controller,
+                    errorBuilder: (ctx, error, _) {
+                      final String errorMessage = onDetectError(error);
+                      debugPrint(errorMessage);
+
+                      WidgetsBinding.instance.addPostFrameCallback((_) {
+                        navigationService.showTalawaErrorSnackBar(
+                          errorMessage,
+                          MessageType.error,
+                        );
+                      });
+
+                      return Center(
+                        child: Text(
+                          errorMessage,
+                        ),
+                      );
+                    },
+                    onDetect: (capture) {
+                      debugPrint('onDetect called with capture: $capture');
+                      onQRViewCreated(capture, controller);
+                    },
                   ),
                 ),
                 SizedBox(
@@ -269,56 +288,93 @@
   /// This is the helper function which execute when the on QR view created.
   ///
   /// **params**:
-  /// * `controller`: QRViewController
+  /// * `scanData`: BarcodeCapture
+  /// * `controller`: MobileScannerController
   ///
   /// **returns**:
   ///   None
 
-  void _onQRViewCreated(QRViewController controller) {
-    controller.scannedDataStream.listen((scanData) {
-      /// if the scanData is not empty.
-      if (scanData.code!.isNotEmpty) {
-        print(scanData.code);
-        try {
-          final List<String> data = scanData.code!.split('?');
-          url.text = data[0];
-          final List<String> queries = data[1].split('&');
-          orgId = queries[0].split('=')[1];
-          Vibration.vibrate(duration: 100);
-          controller.stopCamera();
-          controller.dispose();
-          final box = Hive.box('url');
-          box.put(urlKey, url.text);
-          box.put(imageUrlKey, "${url.text}/talawa/");
-          graphqlConfig.getOrgUrl();
-          Navigator.pop(navigationService.navigatorKey.currentContext!);
-          navigationService.pushScreen('/selectOrg', arguments: orgId);
-        } on CameraException catch (e) {
-          debugPrint(e.toString());
-          navigationService.showTalawaErrorSnackBar(
-            "The Camera is not working",
-            MessageType.error,
-          );
-        } on QrEmbeddedImageException catch (e) {
-          debugPrint(e.toString());
-          navigationService.showTalawaErrorDialog(
-            "The QR is not Working",
-            MessageType.error,
-          );
-        } on QrUnsupportedVersionException catch (e) {
-          debugPrint(e.toString());
-          navigationService.showTalawaErrorDialog(
-            "This QR version is not Supported.",
-            MessageType.error,
-          );
-        } on Exception catch (e) {
-          debugPrint(e.toString());
-          navigationService.showTalawaErrorSnackBar(
-            "This QR is not for the App",
-            MessageType.error,
-          );
-        }
+  void onQRViewCreated(
+    BarcodeCapture scanData,
+    MobileScannerController? controller,
+  ) {
+    if (scanData.barcodes.isNotEmpty) {
+      debugPrint("Barcode: ${scanData.barcodes.first.displayValue}");
+      try {
+        final String code = scanData.barcodes.first.displayValue!;
+
+        final List<String> data = code.split('?');
+        url.text = data[0];
+        final List<String> queries = data[1].split('&');
+        orgId = queries[0].split('=')[1];
+        Vibration.vibrate(duration: 100);
+        controller!.stop();
+        controller.dispose();
+
+        final box = Hive.box('url');
+        box.put(urlKey, url.text);
+        box.put(imageUrlKey, "${url.text}/talawa/");
+        graphqlConfig.getOrgUrl();
+        Navigator.pop(navigationService.navigatorKey.currentContext!);
+        navigationService.pushScreen('/selectOrg', arguments: orgId);
+      } on QrEmbeddedImageException catch (e) {
+        debugPrint(e.toString());
+        navigationService.showTalawaErrorDialog(
+          "The QR is not Working",
+          MessageType.error,
+        );
+      } on QrUnsupportedVersionException catch (e) {
+        debugPrint(e.toString());
+        navigationService.showTalawaErrorDialog(
+          "This QR version is not Supported.",
+          MessageType.error,
+        );
+      } on Exception catch (e) {
+        debugPrint(e.toString());
+        navigationService.showTalawaErrorSnackBar(
+          "This QR is not for the App",
+          MessageType.error,
+        );
+      }
+    }
+  }
+
+  /// This function is used to handle the error.
+  ///
+  /// **params**:
+  /// * `error`: Object
+  ///
+  /// **returns**:
+  /// * `String`: The error message generated.
+
+  String onDetectError(Object error) {
+    String errorMsg = 'An unknown error occurred';
+
+    if (error is MobileScannerException) {
+      debugPrint(error.errorCode.toString());
+      switch (error.errorCode) {
+        case MobileScannerErrorCode.controllerDisposed:
+          errorMsg = 'Camera is disposed';
+          break;
+        case MobileScannerErrorCode.controllerAlreadyInitialized:
+          errorMsg = 'Camera is already in use';
+          break;
+        case MobileScannerErrorCode.controllerUninitialized:
+          errorMsg = 'Camera is not ready';
+          break;
+        case MobileScannerErrorCode.permissionDenied:
+          errorMsg = 'Please provide camera permission to scan QR code';
+          break;
+        case MobileScannerErrorCode.unsupported:
+          errorMsg = 'This device does not support scanning';
+          break;
+        case MobileScannerErrorCode.genericError:
+          errorMsg = 'Something went wrong while detecting the QR';
+          break;
+        default:
+          errorMsg = 'An unknown error occurred';
       }
-    });
+    }
+    return errorMsg;
   }
 }