[image_picker] Switch Android to internal method channel (flutter#5958)

packages/image_picker/image_picker_android/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.8.5+1
+
+* Switches to an internal method channel implementation.
+
 ## 0.8.5
 
 * Updates gradle to 7.1.2.

packages/image_picker/image_picker_android/android/src/main/java/io/flutter/plugins/imagepicker/ImagePickerPlugin.java

@@ -183,7 +183,7 @@ ImagePickerDelegate getDelegate() {
   private static final String METHOD_CALL_RETRIEVE = "retrieve";
   private static final int CAMERA_DEVICE_FRONT = 1;
   private static final int CAMERA_DEVICE_REAR = 0;
-  private static final String CHANNEL = "plugins.flutter.io/image_picker";
+  private static final String CHANNEL = "plugins.flutter.io/image_picker_android";
 
   private static final int SOURCE_CAMERA = 0;
   private static final int SOURCE_GALLERY = 1;

packages/image_picker/image_picker_android/lib/image_picker_android.dart

@@ -0,0 +1,282 @@
+// Copyright 2013 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:flutter/foundation.dart';
+import 'package:flutter/services.dart';
+
+import 'package:image_picker_platform_interface/image_picker_platform_interface.dart';
+
+const MethodChannel _channel =
+    MethodChannel('plugins.flutter.io/image_picker_android');
+
+/// An Android implementation of [ImagePickerPlatform].
+class ImagePickerAndroid extends ImagePickerPlatform {
+  /// The MethodChannel that is being used by this implementation of the plugin.
+  @visibleForTesting
+  MethodChannel get channel => _channel;
+
+  /// Registers this class as the default platform implementation.
+  static void registerWith() {
+    ImagePickerPlatform.instance = ImagePickerAndroid();
+  }
+
+  @override
+  Future<PickedFile?> pickImage({
+    required ImageSource source,
+    double? maxWidth,
+    double? maxHeight,
+    int? imageQuality,
+    CameraDevice preferredCameraDevice = CameraDevice.rear,
+  }) async {
+    final String? path = await _getImagePath(
+      source: source,
+      maxWidth: maxWidth,
+      maxHeight: maxHeight,
+      imageQuality: imageQuality,
+      preferredCameraDevice: preferredCameraDevice,
+    );
+    return path != null ? PickedFile(path) : null;
+  }
+
+  @override
+  Future<List<PickedFile>?> pickMultiImage({
+    double? maxWidth,
+    double? maxHeight,
+    int? imageQuality,
+  }) async {
+    final List<dynamic>? paths = await _getMultiImagePath(
+      maxWidth: maxWidth,
+      maxHeight: maxHeight,
+      imageQuality: imageQuality,
+    );
+    if (paths == null) {
+      return null;
+    }
+
+    return paths.map((dynamic path) => PickedFile(path as String)).toList();
+  }
+
+  Future<List<dynamic>?> _getMultiImagePath({
+    double? maxWidth,
+    double? maxHeight,
+    int? imageQuality,
+  }) {
+    if (imageQuality != null && (imageQuality < 0 || imageQuality > 100)) {
+      throw ArgumentError.value(
+          imageQuality, 'imageQuality', 'must be between 0 and 100');
+    }
+
+    if (maxWidth != null && maxWidth < 0) {
+      throw ArgumentError.value(maxWidth, 'maxWidth', 'cannot be negative');
+    }
+
+    if (maxHeight != null && maxHeight < 0) {
+      throw ArgumentError.value(maxHeight, 'maxHeight', 'cannot be negative');
+    }
+
+    return _channel.invokeMethod<List<dynamic>?>(
+      'pickMultiImage',
+      <String, dynamic>{
+        'maxWidth': maxWidth,
+        'maxHeight': maxHeight,
+        'imageQuality': imageQuality,
+      },
+    );
+  }
+
+  Future<String?> _getImagePath({
+    required ImageSource source,
+    double? maxWidth,
+    double? maxHeight,
+    int? imageQuality,
+    CameraDevice preferredCameraDevice = CameraDevice.rear,
+    bool requestFullMetadata = true,
+  }) {
+    if (imageQuality != null && (imageQuality < 0 || imageQuality > 100)) {
+      throw ArgumentError.value(
+          imageQuality, 'imageQuality', 'must be between 0 and 100');
+    }
+
+    if (maxWidth != null && maxWidth < 0) {
+      throw ArgumentError.value(maxWidth, 'maxWidth', 'cannot be negative');
+    }
+
+    if (maxHeight != null && maxHeight < 0) {
+      throw ArgumentError.value(maxHeight, 'maxHeight', 'cannot be negative');
+    }
+
+    return _channel.invokeMethod<String>(
+      'pickImage',
+      <String, dynamic>{
+        'source': source.index,
+        'maxWidth': maxWidth,
+        'maxHeight': maxHeight,
+        'imageQuality': imageQuality,
+        'cameraDevice': preferredCameraDevice.index,
+        'requestFullMetadata': requestFullMetadata,
+      },
+    );
+  }
+
+  @override
+  Future<PickedFile?> pickVideo({
+    required ImageSource source,
+    CameraDevice preferredCameraDevice = CameraDevice.rear,
+    Duration? maxDuration,
+  }) async {
+    final String? path = await _getVideoPath(
+      source: source,
+      maxDuration: maxDuration,
+      preferredCameraDevice: preferredCameraDevice,
+    );
+    return path != null ? PickedFile(path) : null;
+  }
+
+  Future<String?> _getVideoPath({
+    required ImageSource source,
+    CameraDevice preferredCameraDevice = CameraDevice.rear,
+    Duration? maxDuration,
+  }) {
+    return _channel.invokeMethod<String>(
+      'pickVideo',
+      <String, dynamic>{
+        'source': source.index,
+        'maxDuration': maxDuration?.inSeconds,
+        'cameraDevice': preferredCameraDevice.index
+      },
+    );
+  }
+
+  @override
+  Future<XFile?> getImage({
+    required ImageSource source,
+    double? maxWidth,
+    double? maxHeight,
+    int? imageQuality,
+    CameraDevice preferredCameraDevice = CameraDevice.rear,
+  }) async {
+    final String? path = await _getImagePath(
+      source: source,
+      maxWidth: maxWidth,
+      maxHeight: maxHeight,
+      imageQuality: imageQuality,
+      preferredCameraDevice: preferredCameraDevice,
+    );
+    return path != null ? XFile(path) : null;
+  }
+
+  @override
+  Future<XFile?> getImageFromSource({
+    required ImageSource source,
+    ImagePickerOptions options = const ImagePickerOptions(),
+  }) async {
+    final String? path = await _getImagePath(
+      source: source,
+      maxHeight: options.maxHeight,
+      maxWidth: options.maxWidth,
+      imageQuality: options.imageQuality,
+      preferredCameraDevice: options.preferredCameraDevice,
+      requestFullMetadata: options.requestFullMetadata,
+    );
+    return path != null ? XFile(path) : null;
+  }
+
+  @override
+  Future<List<XFile>?> getMultiImage({
+    double? maxWidth,
+    double? maxHeight,
+    int? imageQuality,
+  }) async {
+    final List<dynamic>? paths = await _getMultiImagePath(
+      maxWidth: maxWidth,
+      maxHeight: maxHeight,
+      imageQuality: imageQuality,
+    );
+    if (paths == null) {
+      return null;
+    }
+
+    return paths.map((dynamic path) => XFile(path as String)).toList();
+  }
+
+  @override
+  Future<XFile?> getVideo({
+    required ImageSource source,
+    CameraDevice preferredCameraDevice = CameraDevice.rear,
+    Duration? maxDuration,
+  }) async {
+    final String? path = await _getVideoPath(
+      source: source,
+      maxDuration: maxDuration,
+      preferredCameraDevice: preferredCameraDevice,
+    );
+    return path != null ? XFile(path) : null;
+  }
+
+  @override
+  Future<LostData> retrieveLostData() async {
+    final LostDataResponse result = await getLostData();
+
+    if (result.isEmpty) {
+      return LostData.empty();
+    }
+
+    return LostData(
+      file: result.file != null ? PickedFile(result.file!.path) : null,
+      exception: result.exception,
+      type: result.type,
+    );
+  }
+
+  @override
+  Future<LostDataResponse> getLostData() async {
+    List<XFile>? pickedFileList;
+
+    final Map<String, dynamic>? result =
+        await _channel.invokeMapMethod<String, dynamic>('retrieve');
+
+    if (result == null) {
+      return LostDataResponse.empty();
+    }
+
+    assert(result.containsKey('path') != result.containsKey('errorCode'));
+
+    final String? type = result['type'] as String?;
+    assert(type == kTypeImage || type == kTypeVideo);
+
+    RetrieveType? retrieveType;
+    if (type == kTypeImage) {
+      retrieveType = RetrieveType.image;
+    } else if (type == kTypeVideo) {
+      retrieveType = RetrieveType.video;
+    }
+
+    PlatformException? exception;
+    if (result.containsKey('errorCode')) {
+      exception = PlatformException(
+          code: result['errorCode']! as String,
+          message: result['errorMessage'] as String?);
+    }
+
+    final String? path = result['path'] as String?;
+
+    final List<String>? pathList =
+        (result['pathList'] as List<dynamic>?)?.cast<String>();
+    if (pathList != null) {
+      pickedFileList = <XFile>[];
+      for (final String path in pathList) {
+        pickedFileList.add(XFile(path));
+      }
+    }
+
+    return LostDataResponse(
+      file: path != null ? XFile(path) : null,
+      exception: exception,
+      type: retrieveType,
+      files: pickedFileList,
+    );
+  }
+}

packages/image_picker/image_picker_android/pubspec.yaml

@@ -2,7 +2,7 @@ name: image_picker_android
 description: Android implementation of the image_picker plugin.
 repository: https://github.com/flutter/plugins/tree/main/packages/image_picker/image_picker_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+image_picker%22
-version: 0.8.5
+version: 0.8.5+1
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
@@ -15,6 +15,7 @@ flutter:
       android:
         package: io.flutter.plugins.imagepicker
         pluginClass: ImagePickerPlugin
+        dartPluginClass: ImagePickerAndroid
 
 dependencies:
   flutter: