Bump Camera Example Plugin Apps Targetsdk Versions (#8193)

Bumped targetsdk versions of example app plugins for `camera`, `camera_android`, and `camera_android_camerax`. Deleted `Capture specific image resolutions` integration. The Android CameraX team confirmed the result coming from the CameraX side is correct and works as they expect. This means the supported output sizes cannot fulfill our test case assumptions.

For 'camera_android_camerax', we use the automatic selection described [here](https://developer.android.com/media/camera/camerax/configuration#resolution), and it willl automatically choose, so we can't control the outcome. Even if we specify, the resolution is not gauranteed. 

`camera` would have the same behavior as `camera_android_camerax` because `camera`'s android implementation defaults to `camera_android_camerax` behavior.

For `camera_android` we cannot choose the aspect ratio [here](https://developer.android.com/reference/android/media/CamcorderProfile#getAll%28java.lang.String,%20int%29). If there's an unsupported size, it "falls through" to the next smallest size, which means we cannot choose the final resolution. Example high quality aspect ratio [here](https://developer.android.com/reference/android/media/CamcorderProfile#QUALITY_HIGH), and logic for final resolution [here](https://github.com/flutter/packages/blob/a02deb49c1f6bcb8bb895dd67fbf36ac2c9738bd/packages/camera/camera_android/android/src/main/java/io/flutter/plugins/camera/features/resolution/ResolutionFeature.java#L172).
 
Fixes flutter/flutter#154682

Author: jesswrd

packages/camera/camera/example/android/app/build.gradle

@@ -32,7 +32,7 @@ android {
     defaultConfig {
         applicationId "io.flutter.plugins.cameraexample"
         minSdkVersion flutter.minSdkVersion
-        targetSdkVersion 28
+        targetSdkVersion flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

packages/camera/camera/example/android/app/src/main/AndroidManifest.xml

@@ -7,6 +7,7 @@
     <activity
       android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection"
       android:hardwareAccelerated="true"
+      android:exported="true"
       android:launchMode="singleTop"
       android:name="io.flutter.embedding.android.FlutterActivity"
       android:theme="@style/LaunchTheme"

packages/camera/camera/example/integration_test/camera_test.dart

@@ -53,49 +53,6 @@ void main() {
         actual.longestSide == expectedSize.longestSide;
   }
 
-  // This tests that the capture is no bigger than the preset, since we have
-  // automatic code to fall back to smaller sizes when we need to. Returns
-  // whether the image is exactly the desired resolution.
-  Future<bool> testCaptureImageResolution(
-      CameraController controller, ResolutionPreset preset) async {
-    final Size expectedSize = presetExpectedSizes[preset]!;
-
-    // Take Picture
-    final XFile file = await controller.takePicture();
-
-    // Load picture
-    final File fileImage = File(file.path);
-    final Image image = await decodeImageFromList(fileImage.readAsBytesSync());
-
-    // Verify image dimensions are as expected
-    expect(image, isNotNull);
-    return assertExpectedDimensions(
-        expectedSize, Size(image.height.toDouble(), image.width.toDouble()));
-  }
-
-  testWidgets('Capture specific image resolutions',
-      (WidgetTester tester) async {
-    final List<CameraDescription> cameras = await availableCameras();
-    if (cameras.isEmpty) {
-      return;
-    }
-    for (final CameraDescription cameraDescription in cameras) {
-      bool previousPresetExactlySupported = true;
-      for (final MapEntry<ResolutionPreset, Size> preset
-          in presetExpectedSizes.entries) {
-        final CameraController controller =
-            CameraController(cameraDescription, preset.key);
-        await controller.initialize();
-        final bool presetExactlySupported =
-            await testCaptureImageResolution(controller, preset.key);
-        assert(!(!previousPresetExactlySupported && presetExactlySupported),
-            'The camera took higher resolution pictures at a lower resolution.');
-        previousPresetExactlySupported = presetExactlySupported;
-        await controller.dispose();
-      }
-    }
-  });
-
   // This tests that the capture is no bigger than the preset, since we have
   // automatic code to fall back to smaller sizes when we need to. Returns
   // whether the image is exactly the desired resolution.

packages/camera/camera_android/example/android/app/build.gradle

@@ -32,7 +32,7 @@ android {
     defaultConfig {
         applicationId "io.flutter.plugins.cameraexample"
         minSdkVersion flutter.minSdkVersion
-        targetSdkVersion 28
+        targetSdkVersion flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

packages/camera/camera_android/example/android/app/src/main/AndroidManifest.xml

@@ -7,6 +7,7 @@
     <activity
       android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection"
       android:hardwareAccelerated="true"
+      android:exported="true"
       android:launchMode="singleTop"
       android:name="io.flutter.embedding.android.FlutterActivity"
       android:theme="@style/LaunchTheme"

packages/camera/camera_android/example/integration_test/camera_test.dart

@@ -3,12 +3,10 @@
 // found in the LICENSE file.
 
 import 'dart:io';
-import 'dart:ui';
 
 import 'package:camera_android/camera_android.dart';
 import 'package:camera_example/camera_controller.dart';
 import 'package:camera_platform_interface/camera_platform_interface.dart';
-import 'package:flutter/painting.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:integration_test/integration_test.dart';
@@ -50,50 +48,6 @@ void main() {
         actual.longestSide == expectedSize.longestSide;
   }
 
-  // This tests that the capture is no bigger than the preset, since we have
-  // automatic code to fall back to smaller sizes when we need to. Returns
-  // whether the image is exactly the desired resolution.
-  Future<bool> testCaptureImageResolution(
-      CameraController controller, ResolutionPreset preset) async {
-    final Size expectedSize = presetExpectedSizes[preset]!;
-
-    // Take Picture
-    final XFile file = await controller.takePicture();
-
-    // Load picture
-    final File fileImage = File(file.path);
-    final Image image = await decodeImageFromList(fileImage.readAsBytesSync());
-
-    // Verify image dimensions are as expected
-    expect(image, isNotNull);
-    return assertExpectedDimensions(
-        expectedSize, Size(image.height.toDouble(), image.width.toDouble()));
-  }
-
-  testWidgets('Capture specific image resolutions',
-      (WidgetTester tester) async {
-    final List<CameraDescription> cameras =
-        await CameraPlatform.instance.availableCameras();
-    if (cameras.isEmpty) {
-      return;
-    }
-    for (final CameraDescription cameraDescription in cameras) {
-      bool previousPresetExactlySupported = true;
-      for (final MapEntry<ResolutionPreset, Size> preset
-          in presetExpectedSizes.entries) {
-        final CameraController controller = CameraController(cameraDescription,
-            mediaSettings: MediaSettings(resolutionPreset: preset.key));
-        await controller.initialize();
-        final bool presetExactlySupported =
-            await testCaptureImageResolution(controller, preset.key);
-        assert(!(!previousPresetExactlySupported && presetExactlySupported),
-            'The camera took higher resolution pictures at a lower resolution.');
-        previousPresetExactlySupported = presetExactlySupported;
-        await controller.dispose();
-      }
-    }
-  });
-
   // This tests that the capture is no bigger than the preset, since we have
   // automatic code to fall back to smaller sizes when we need to. Returns
   // whether the image is exactly the desired resolution.

packages/camera/camera_android_camerax/example/android/app/build.gradle

@@ -38,7 +38,7 @@ android {
     defaultConfig {
         applicationId "io.flutter.plugins.cameraxexample"
         minSdkVersion flutter.minSdkVersion
-        targetSdkVersion 30
+        targetSdkVersion flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

packages/camera/camera_android_camerax/example/android/app/src/main/AndroidManifest.xml

@@ -6,11 +6,11 @@
         android:icon="@mipmap/ic_launcher">
         <activity
             android:name=".MainActivity"
-            android:exported="true"
             android:launchMode="singleTop"
             android:theme="@style/LaunchTheme"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"
+            android:exported="true"
             android:windowSoftInputMode="adjustResize">
             <!-- Specifies an Android theme to apply to this Activity as soon as
                  the Android process has started. This theme is visible to the user

packages/camera/camera_android_camerax/example/integration_test/integration_test.dart

@@ -10,7 +10,6 @@ import 'package:camera_android_camerax/camera_android_camerax.dart';
 import 'package:camera_android_camerax_example/camera_controller.dart';
 import 'package:camera_android_camerax_example/camera_image.dart';
 import 'package:camera_platform_interface/camera_platform_interface.dart';
-import 'package:flutter/painting.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:integration_test/integration_test.dart';
 import 'package:video_player/video_player.dart';
@@ -46,26 +45,6 @@ void main() {
         actual.longestSide == expectedSize.longestSide;
   }
 
-  // This tests that the capture is no bigger than the preset, since we have
-  // automatic code to fall back to smaller sizes when we need to. Returns
-  // whether the image is exactly the desired resolution.
-  Future<bool> testCaptureImageResolution(
-      CameraController controller, ResolutionPreset preset) async {
-    final Size expectedSize = presetExpectedSizes[preset]!;
-
-    // Take Picture
-    final XFile file = await controller.takePicture();
-
-    // Load picture
-    final File fileImage = File(file.path);
-    final Image image = await decodeImageFromList(fileImage.readAsBytesSync());
-
-    // Verify image dimensions are as expected
-    expect(image, isNotNull);
-    return assertExpectedDimensions(
-        expectedSize, Size(image.height.toDouble(), image.width.toDouble()));
-  }
-
   testWidgets('availableCameras only supports valid back or front cameras',
       (WidgetTester tester) async {
     final List<CameraDescription> availableCameras =
@@ -78,37 +57,6 @@ void main() {
     }
   });
 
-  testWidgets('Capture specific image resolutions',
-      (WidgetTester tester) async {
-    final List<CameraDescription> cameras =
-        await CameraPlatform.instance.availableCameras();
-    if (cameras.isEmpty) {
-      return;
-    }
-    for (final CameraDescription cameraDescription in cameras) {
-      bool previousPresetExactlySupported = true;
-      for (final MapEntry<ResolutionPreset, Size> preset
-          in presetExpectedSizes.entries) {
-        final CameraController controller = CameraController(
-          cameraDescription,
-          mediaSettings: MediaSettings(resolutionPreset: preset.key),
-        );
-        await controller.initialize();
-        final bool presetExactlySupported =
-            await testCaptureImageResolution(controller, preset.key);
-        // Ensures that if a lower resolution was used for previous (lower)
-        // resolution preset, then the current (higher) preset also is adjusted,
-        // as it demands a higher resolution.
-        expect(
-            previousPresetExactlySupported || !presetExactlySupported, isTrue,
-            reason:
-                'The camera took higher resolution pictures at a lower resolution.');
-        previousPresetExactlySupported = presetExactlySupported;
-        await controller.dispose();
-      }
-    }
-  });
-
   testWidgets('Preview takes expected resolution from preset',
       (WidgetTester tester) async {
     final List<CameraDescription> cameras =