[various] Scrub pre-Android-API <24 code (#9851)

For all packages that had conditionals to support Android API <24:
- Update the min Flutter version to 3.35, which requires API 24
- Remove the conditional logic
- Update gradle to require 24.

Also scrubs some comments about older verisons from the app-facing package READMEs, where details hadn't yet been moved to implementation packages. Those don't have version changes, since it's not important when this information goes out (as people on older versions of Flutter, and supporting older versions of Android in their apps, will still get compatible versions, they just aren't the versions we are supporting now).

Includes autoformat changes, since updating the min Dart SDK opts into some formatter changes.

## Pre-Review Checklist

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Author: stuartmorgan-g

packages/camera/camera/CHANGELOG.md

@@ -1,6 +1,7 @@
 ## NEXT
 
 * Updates minimum supported SDK version to Flutter 3.29/Dart 3.7.
+* Updates README to reflect that only Android API 24+ is supported.
 
 ## 0.11.2
 

packages/camera/camera/README.md

@@ -8,7 +8,7 @@ A Flutter plugin for iOS, Android and Web allowing access to the device cameras.
 
 |                | Android | iOS       | Web                    |
 |----------------|---------|-----------|------------------------|
-| **Support**    | SDK 23+ | iOS 12.0+ | [See `camera_web `][1] |
+| **Support**    | SDK 24+ | iOS 12.0+ | [See `camera_web `][1] |
 
 ## Features
 
@@ -37,12 +37,6 @@ If editing `Info.plist` as text, add:
 
 ### Android
 
-Change the minimum Android sdk version to 23 (or higher) in your `android/app/build.gradle` file.
-
-```groovy
-minSdk = 23
-```
-
 The endorsed [`camera_android_camerax`][2] implementation of the camera plugin built with CameraX has
 better support for more devices than `camera_android`, but has some limitations; please see [this list][3]
 for more details. If you wish to use the [`camera_android`][4] implementation of the camera plugin

packages/camera/camera_android/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 0.10.10+7
+
+* Updates minimum supported SDK version to Flutter 3.35.
+* Removes code for supporting API 21-23.
+
 ## 0.10.10+6
 
 * Bumps com.android.tools.build:gradle to 8.12.1.

packages/camera/camera_android/android/build.gradle

@@ -34,7 +34,7 @@ buildFeatures {
     compileSdk = 36
 
     defaultConfig {
-        minSdkVersion 21
+        minSdkVersion 24
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
     lintOptions {

packages/camera/camera_android/android/src/main/java/io/flutter/plugins/camera/Camera.java

@@ -891,12 +891,7 @@ public void pauseVideoRecording() {
     }
 
     try {
-      if (SdkCapabilityChecker.supportsVideoPause()) {
-        mediaRecorder.pause();
-      } else {
-        throw new Messages.FlutterError(
-            "videoRecordingFailed", "pauseVideoRecording requires Android API +24.", null);
-      }
+      mediaRecorder.pause();
     } catch (IllegalStateException e) {
       throw new Messages.FlutterError("videoRecordingFailed", e.getMessage(), null);
     }
@@ -908,12 +903,7 @@ public void resumeVideoRecording() {
     }
 
     try {
-      if (SdkCapabilityChecker.supportsVideoPause()) {
-        mediaRecorder.resume();
-      } else {
-        throw new Messages.FlutterError(
-            "videoRecordingFailed", "resumeVideoRecording requires Android API +24.", null);
-      }
+      mediaRecorder.resume();
     } catch (IllegalStateException e) {
       throw new Messages.FlutterError("videoRecordingFailed", e.getMessage(), null);
     }

packages/camera/camera_android/android/src/main/java/io/flutter/plugins/camera/CameraApiImpl.java

@@ -86,9 +86,6 @@ private Long instantiateCamera(String cameraName, Messages.PlatformMediaSettings
     return flutterSurfaceTexture.id();
   }
 
-  // We move catching CameraAccessException out of onMethodCall because it causes a crash
-  // on plugin registration for sdks incompatible with Camera2 (< 21). We want this plugin to
-  // to be able to compile with <21 sdks for apps that want the camera and support earlier version.
   @SuppressWarnings("ConstantConditions")
   private <T> void handleException(Exception exception, Messages.Result<T> result) {
     // The code below exactly preserves the format of the native exceptions generated by pre-Pigeon

packages/camera/camera_android/android/src/main/java/io/flutter/plugins/camera/CameraProperties.java

@@ -224,7 +224,6 @@ public interface CameraProperties {
    * @return android.graphics.Rect Area of the image sensor which corresponds to active pixels prior
    *     to the application of any geometric distortion correction.
    */
-  @RequiresApi(api = VERSION_CODES.M)
   @NonNull
   Rect getSensorInfoPreCorrectionActiveArraySize();
 

packages/camera/camera_android/android/src/main/java/io/flutter/plugins/camera/CameraPropertiesImpl.java

@@ -140,7 +140,6 @@ public Size getSensorInfoPixelArraySize() {
     return cameraCharacteristics.get(CameraCharacteristics.SENSOR_INFO_PIXEL_ARRAY_SIZE);
   }
 
-  @RequiresApi(api = VERSION_CODES.M)
   @NonNull
   @Override
   public Rect getSensorInfoPreCorrectionActiveArraySize() {

packages/camera/camera_android/android/src/main/java/io/flutter/plugins/camera/SdkCapabilityChecker.java

@@ -34,24 +34,12 @@ public static boolean supportsEncoderProfiles() {
     return SDK_VERSION >= Build.VERSION_CODES.S;
   }
 
-  @ChecksSdkIntAtLeast(api = Build.VERSION_CODES.M)
-  public static boolean supportsMarshmallowNoiseReductionModes() {
-    // See https://developer.android.com/reference/android/hardware/camera2/CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES
-    return SDK_VERSION >= Build.VERSION_CODES.M;
-  }
-
   @ChecksSdkIntAtLeast(api = Build.VERSION_CODES.P)
   public static boolean supportsSessionConfiguration() {
     // See https://developer.android.com/reference/android/hardware/camera2/params/SessionConfiguration
     return SDK_VERSION >= Build.VERSION_CODES.P;
   }
 
-  @ChecksSdkIntAtLeast(api = Build.VERSION_CODES.N)
-  public static boolean supportsVideoPause() {
-    // See https://developer.android.com/reference/androidx/camera/video/VideoRecordEvent.Pause
-    return SDK_VERSION >= Build.VERSION_CODES.N;
-  }
-
   @ChecksSdkIntAtLeast(api = Build.VERSION_CODES.R)
   public static boolean supportsZoomRatio() {
     // See https://developer.android.com/reference/android/hardware/camera2/CaptureRequest#CONTROL_ZOOM_RATIO

packages/camera/camera_android/android/src/main/java/io/flutter/plugins/camera/features/noisereduction/NoiseReductionFeature.java

@@ -10,7 +10,6 @@
 import androidx.annotation.NonNull;
 import io.flutter.BuildConfig;
 import io.flutter.plugins.camera.CameraProperties;
-import io.flutter.plugins.camera.SdkCapabilityChecker;
 import io.flutter.plugins.camera.features.CameraFeature;
 import java.util.HashMap;
 
@@ -35,12 +34,10 @@ public NoiseReductionFeature(@NonNull CameraProperties cameraProperties) {
     NOISE_REDUCTION_MODES.put(NoiseReductionMode.fast, CaptureRequest.NOISE_REDUCTION_MODE_FAST);
     NOISE_REDUCTION_MODES.put(
         NoiseReductionMode.highQuality, CaptureRequest.NOISE_REDUCTION_MODE_HIGH_QUALITY);
-    if (SdkCapabilityChecker.supportsMarshmallowNoiseReductionModes()) {
-      NOISE_REDUCTION_MODES.put(
-          NoiseReductionMode.minimal, CaptureRequest.NOISE_REDUCTION_MODE_MINIMAL);
-      NOISE_REDUCTION_MODES.put(
-          NoiseReductionMode.zeroShutterLag, CaptureRequest.NOISE_REDUCTION_MODE_ZERO_SHUTTER_LAG);
-    }
+    NOISE_REDUCTION_MODES.put(
+        NoiseReductionMode.minimal, CaptureRequest.NOISE_REDUCTION_MODE_MINIMAL);
+    NOISE_REDUCTION_MODES.put(
+        NoiseReductionMode.zeroShutterLag, CaptureRequest.NOISE_REDUCTION_MODE_ZERO_SHUTTER_LAG);
   }
 
   @NonNull