[various] Enable avoid_dynamic_calls (flutter#6834)

* Enable the option

* Fix camera

* Fix webview

* Remove unnecessary 'call's from camera tests

* Fix maps

* Fix sign-in

* fix image_picker

* Fix IAP

* Fix shared_preferences

* Fix url_launcher_android

* Version bumps

* Fix tool

* Re-apply webview test fix

* Re-bump versions

* Fix one new tool issue

Author: stuartmorgan-g

analysis_options.yaml

@@ -68,7 +68,7 @@ linter:
     # - avoid_catching_errors # blocked on https://github.com/dart-lang/linter/issues/3023
     - avoid_classes_with_only_static_members
     - avoid_double_and_int_checks
-    # - avoid_dynamic_calls # LOCAL CHANGE - Needs to be enabled and violations fixed.
+    - avoid_dynamic_calls
     - avoid_empty_else
     - avoid_equals_and_hash_code_on_mutable_classes
     - avoid_escaping_inner_quotes

packages/camera/camera_android/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.10.2+1
+
+* Updates code for stricter lint checks.
+
 ## 0.10.2
 
 * Remove usage of deprecated quiver Optional type.

packages/camera/camera_android/lib/src/android_camera.dart

@@ -549,9 +549,9 @@ class AndroidCamera extends CameraPlatform {
   Future<dynamic> _handleDeviceMethodCall(MethodCall call) async {
     switch (call.method) {
       case 'orientation_changed':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _deviceEventStreamController.add(DeviceOrientationChangedEvent(
-            deserializeDeviceOrientation(
-                call.arguments['orientation']! as String)));
+            deserializeDeviceOrientation(arguments['orientation']! as String)));
         break;
       default:
         throw MissingPluginException();
@@ -566,21 +566,23 @@ class AndroidCamera extends CameraPlatform {
   Future<dynamic> handleCameraMethodCall(MethodCall call, int cameraId) async {
     switch (call.method) {
       case 'initialized':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(CameraInitializedEvent(
           cameraId,
-          call.arguments['previewWidth']! as double,
-          call.arguments['previewHeight']! as double,
-          deserializeExposureMode(call.arguments['exposureMode']! as String),
-          call.arguments['exposurePointSupported']! as bool,
-          deserializeFocusMode(call.arguments['focusMode']! as String),
-          call.arguments['focusPointSupported']! as bool,
+          arguments['previewWidth']! as double,
+          arguments['previewHeight']! as double,
+          deserializeExposureMode(arguments['exposureMode']! as String),
+          arguments['exposurePointSupported']! as bool,
+          deserializeFocusMode(arguments['focusMode']! as String),
+          arguments['focusPointSupported']! as bool,
         ));
         break;
       case 'resolution_changed':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(CameraResolutionChangedEvent(
           cameraId,
-          call.arguments['captureWidth']! as double,
-          call.arguments['captureHeight']! as double,
+          arguments['captureWidth']! as double,
+          arguments['captureHeight']! as double,
         ));
         break;
       case 'camera_closing':
@@ -589,23 +591,32 @@ class AndroidCamera extends CameraPlatform {
         ));
         break;
       case 'video_recorded':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(VideoRecordedEvent(
           cameraId,
-          XFile(call.arguments['path']! as String),
-          call.arguments['maxVideoDuration'] != null
-              ? Duration(
-                  milliseconds: call.arguments['maxVideoDuration']! as int)
+          XFile(arguments['path']! as String),
+          arguments['maxVideoDuration'] != null
+              ? Duration(milliseconds: arguments['maxVideoDuration']! as int)
               : null,
         ));
         break;
       case 'error':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(CameraErrorEvent(
           cameraId,
-          call.arguments['description']! as String,
+          arguments['description']! as String,
         ));
         break;
       default:
         throw MissingPluginException();
     }
   }
+
+  /// Returns the arguments of [call] as typed string-keyed Map.
+  ///
+  /// This does not do any type validation, so is only safe to call if the
+  /// arguments are known to be a map.
+  Map<String, Object?> _getArgumentDictionary(MethodCall call) {
+    return (call.arguments as Map<Object?, Object?>).cast<String, Object?>();
+  }
 }

packages/camera/camera_android/pubspec.yaml

@@ -2,7 +2,7 @@ name: camera_android
 description: Android implementation of the camera plugin.
 repository: https://github.com/flutter/plugins/tree/main/packages/camera/camera_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+camera%22
-version: 0.10.2
+version: 0.10.2+1
 
 environment:
   sdk: ">=2.14.0 <3.0.0"

packages/camera/camera_android/test/android_camera_test.dart

@@ -504,11 +504,13 @@ void main() {
       ]);
       expect(cameras.length, returnData.length);
       for (int i = 0; i < returnData.length; i++) {
+        final Map<String, Object?> typedData =
+            (returnData[i] as Map<dynamic, dynamic>).cast<String, Object?>();
         final CameraDescription cameraDescription = CameraDescription(
-          name: returnData[i]['name']! as String,
+          name: typedData['name']! as String,
           lensDirection:
-              parseCameraLensDirection(returnData[i]['lensFacing']! as String),
-          sensorOrientation: returnData[i]['sensorOrientation']! as int,
+              parseCameraLensDirection(typedData['lensFacing']! as String),
+          sensorOrientation: typedData['sensorOrientation']! as int,
         );
         expect(cameras[i], cameraDescription);
       }

packages/camera/camera_android_camerax/lib/src/instance_manager.dart

@@ -124,22 +124,26 @@ class InstanceManager {
   /// This method also expects the host `InstanceManager` to have a strong
   /// reference to the instance the identifier is associated with.
   T? getInstanceWithWeakReference<T extends Object>(int identifier) {
-    final Object? weakInstance = _weakInstances[identifier]?.target;
+    final T? weakInstance = _weakInstances[identifier]?.target as T?;
 
     if (weakInstance == null) {
-      final Object? strongInstance = _strongInstances[identifier];
+      final T? strongInstance = _strongInstances[identifier] as T?;
       if (strongInstance != null) {
-        final Object copy =
-            _copyCallbacks[identifier]!(strongInstance)! as Object;
+        // This cast is safe since it matches the argument type for
+        // _addInstanceWithIdentifier, which is the only place _copyCallbacks
+        // is populated.
+        final T Function(T) copyCallback =
+            _copyCallbacks[identifier]! as T Function(T);
+        final T copy = copyCallback(strongInstance);
         _identifiers[copy] = identifier;
-        _weakInstances[identifier] = WeakReference<Object>(copy);
+        _weakInstances[identifier] = WeakReference<T>(copy);
         _finalizer.attach(copy, identifier, detach: copy);
-        return copy as T;
+        return copy;
       }
-      return strongInstance as T?;
+      return strongInstance;
     }
 
-    return weakInstance as T;
+    return weakInstance;
   }
 
   /// Retrieves the identifier associated with instance.

packages/camera/camera_avfoundation/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.9.10+1
+
+* Updates code for stricter lint checks.
+
 ## 0.9.10
 
 * Remove usage of deprecated quiver Optional type.

packages/camera/camera_avfoundation/lib/src/avfoundation_camera.dart

@@ -555,9 +555,9 @@ class AVFoundationCamera extends CameraPlatform {
   Future<dynamic> _handleDeviceMethodCall(MethodCall call) async {
     switch (call.method) {
       case 'orientation_changed':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _deviceEventStreamController.add(DeviceOrientationChangedEvent(
-            deserializeDeviceOrientation(
-                call.arguments['orientation']! as String)));
+            deserializeDeviceOrientation(arguments['orientation']! as String)));
         break;
       default:
         throw MissingPluginException();
@@ -572,21 +572,23 @@ class AVFoundationCamera extends CameraPlatform {
   Future<dynamic> handleCameraMethodCall(MethodCall call, int cameraId) async {
     switch (call.method) {
       case 'initialized':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(CameraInitializedEvent(
           cameraId,
-          call.arguments['previewWidth']! as double,
-          call.arguments['previewHeight']! as double,
-          deserializeExposureMode(call.arguments['exposureMode']! as String),
-          call.arguments['exposurePointSupported']! as bool,
-          deserializeFocusMode(call.arguments['focusMode']! as String),
-          call.arguments['focusPointSupported']! as bool,
+          arguments['previewWidth']! as double,
+          arguments['previewHeight']! as double,
+          deserializeExposureMode(arguments['exposureMode']! as String),
+          arguments['exposurePointSupported']! as bool,
+          deserializeFocusMode(arguments['focusMode']! as String),
+          arguments['focusPointSupported']! as bool,
         ));
         break;
       case 'resolution_changed':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(CameraResolutionChangedEvent(
           cameraId,
-          call.arguments['captureWidth']! as double,
-          call.arguments['captureHeight']! as double,
+          arguments['captureWidth']! as double,
+          arguments['captureHeight']! as double,
         ));
         break;
       case 'camera_closing':
@@ -595,23 +597,32 @@ class AVFoundationCamera extends CameraPlatform {
         ));
         break;
       case 'video_recorded':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(VideoRecordedEvent(
           cameraId,
-          XFile(call.arguments['path']! as String),
-          call.arguments['maxVideoDuration'] != null
-              ? Duration(
-                  milliseconds: call.arguments['maxVideoDuration']! as int)
+          XFile(arguments['path']! as String),
+          arguments['maxVideoDuration'] != null
+              ? Duration(milliseconds: arguments['maxVideoDuration']! as int)
               : null,
         ));
         break;
       case 'error':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(CameraErrorEvent(
           cameraId,
-          call.arguments['description']! as String,
+          arguments['description']! as String,
         ));
         break;
       default:
         throw MissingPluginException();
     }
   }
+
+  /// Returns the arguments of [call] as typed string-keyed Map.
+  ///
+  /// This does not do any type validation, so is only safe to call if the
+  /// arguments are known to be a map.
+  Map<String, Object?> _getArgumentDictionary(MethodCall call) {
+    return (call.arguments as Map<Object?, Object?>).cast<String, Object?>();
+  }
 }

packages/camera/camera_avfoundation/pubspec.yaml

@@ -2,7 +2,7 @@ name: camera_avfoundation
 description: iOS implementation of the camera plugin.
 repository: https://github.com/flutter/plugins/tree/main/packages/camera/camera_avfoundation
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+camera%22
-version: 0.9.10
+version: 0.9.10+1
 
 environment:
   sdk: ">=2.14.0 <3.0.0"

packages/camera/camera_avfoundation/test/avfoundation_camera_test.dart

@@ -478,6 +478,9 @@ void main() {
     test('Should fetch CameraDescription instances for available cameras',
         () async {
       // Arrange
+      // This deliberately uses 'dynamic' since that's what actual platform
+      // channel results will be, so using typed mock data could mask type
+      // handling bugs in the code under test.
       final List<dynamic> returnData = <dynamic>[
         <String, dynamic>{
           'name': 'Test 1',
@@ -504,11 +507,13 @@ void main() {
       ]);
       expect(cameras.length, returnData.length);
       for (int i = 0; i < returnData.length; i++) {
+        final Map<String, Object?> typedData =
+            (returnData[i] as Map<dynamic, dynamic>).cast<String, Object?>();
         final CameraDescription cameraDescription = CameraDescription(
-          name: returnData[i]['name']! as String,
+          name: typedData['name']! as String,
           lensDirection:
-              parseCameraLensDirection(returnData[i]['lensFacing']! as String),
-          sensorOrientation: returnData[i]['sensorOrientation']! as int,
+              parseCameraLensDirection(typedData['lensFacing']! as String),
+          sensorOrientation: typedData['sensorOrientation']! as int,
         );
         expect(cameras[i], cameraDescription);
       }