[various] Scrubs pre-SDK-21 Android code (#9112)

- Removes any annotations or runtime checks related to Android API 20 or 21, as 21 is the minimum API version supported by the versions of Flutter these plugins support. - Removes comment/README references to limitations for <21. - Updates READMEs for app-facing packages to reflect the current support levels. Fixes flutter/flutter#157106 ## Pre-Review Checklist [^1]: Regular contributors who have demonstrated familiarity with the repository guidelines only need to comment if the PR is not auto-exempted by repo tooling.

Author: stuartmorgan-g

packages/camera/camera_android/android/src/test/java/io/flutter/plugins/camera/CameraTest.java

@@ -663,7 +663,7 @@ public void setDescriptionWhileRecording_errorsWhenUnsupported() {
  camera.mediaRecorder = mockMediaRecorder;
  camera.recordingVideo = true;
  camera.videoRenderer = mockVideoRenderer;
- SdkCapabilityChecker.SDK_VERSION = Build.VERSION_CODES.LOLLIPOP;
+ SdkCapabilityChecker.SDK_VERSION = Build.VERSION_CODES.N;
 
  final CameraProperties newCameraProperties = mock(CameraProperties.class);
  assertThrows(

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

@@ -30,7 +30,8 @@ tasks.register("clean", Delete) {
 gradle.projectsEvaluated {
  project(":camera_android") {
  tasks.withType(JavaCompile) {
- options.compilerArgs << "-Xlint:all" << "-Werror"
+ // Ignore classfile due to https://issuetracker.google.com/issues/342067844
+ options.compilerArgs << "-Xlint:all" << "-Werror" << "-Xlint:-classfile"
  }
  }
 }

packages/espresso/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.4.0+7
+
+* Removes obsolete code related to supporting SDK <21.
+
 ## 0.4.0+6
 
 * Updates compileSdk 34 to flutter.compileSdkVersion.

packages/espresso/README.md

@@ -4,7 +4,7 @@ Provides bindings for Espresso tests of Flutter Android apps.
 
 | | Android |
 |-------------|---------|
-| **Support** | SDK 16+ |
+| **Support** | SDK 21+ |
 
 ## Installation
 

packages/espresso/android/build.gradle

@@ -26,7 +26,7 @@ android {
  compileSdk = flutter.compileSdkVersion
 
  defaultConfig {
- minSdkVersion 19
+ minSdkVersion 21
  testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
  }
 

packages/espresso/pubspec.yaml

@@ -3,7 +3,7 @@ description: Java classes for testing Flutter apps using Espresso.
  Allows driving Flutter widgets from a native Espresso test.
 repository: https://github.com/flutter/packages/tree/main/packages/espresso
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+espresso%22
-version: 0.4.0+6
+version: 0.4.0+7
 
 environment:
  sdk: ^3.6.0

packages/file_selector/file_selector/CHANGELOG.md

@@ -1,5 +1,6 @@
 ## NEXT
 
+* Updates README to indicate that Andoid SDK <21 is no longer supported.
 * Updates minimum supported SDK version to Flutter 3.22/Dart 3.4.
 
 ## 1.0.3

packages/file_selector/file_selector/README.md

@@ -8,7 +8,7 @@ A Flutter plugin that manages files and interactions with file dialogs.
 
 | | Android | iOS | Linux | macOS | Web | Windows |
 |-------------|---------|---------|-------|--------|-----|-------------|
-| **Support** | SDK 19+ | iOS 12+ | Any | 10.14+ | Any | Windows 10+ |
+| **Support** | SDK 21+ | iOS 12+ | Any | 10.14+ | Any | Windows 10+ |
 
 ## Setup
 
@@ -114,9 +114,7 @@ pass different `XTypeGroup`s based on `Platform`.
 | Choose a single file | Pick a file/image | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ |
 | Choose multiple files | Pick multiple files/images | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ |
 | Choose a save location | Pick a directory to save a file in | ❌ | ❌ | ✔️ | ✔️ | ✔️ | ❌ |
-| Choose a directory | Pick a directory and get its path | ✔️† | ❌ | ✔️ | ✔️ | ✔️ | ❌ |
-
-† Choosing a directory is no supported on versions of Android before SDK 21 (Lollipop).
+| Choose a directory | Pick a directory and get its path | ✔️ | ❌ | ✔️ | ✔️ | ✔️ | ❌ |
 
 [example]:./example
 [entitlement]: https://docs.flutter.dev/desktop#entitlements-and-the-app-sandbox

packages/file_selector/file_selector_android/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.5.1+14
+
+* Removes obsolete code related to supporting SDK <21.
+
 ## 0.5.1+13
 
 * Updates compileSdk 34 to flutter.compileSdkVersion.

packages/file_selector/file_selector_android/android/build.gradle

@@ -31,7 +31,7 @@ android {
  }
 
  defaultConfig {
- minSdkVersion 19
+ minSdkVersion 21
  }
 
  dependencies {