仅录制特定应用程序而不包括通知和覆盖层的Android屏幕录制器。

要实现仅录制特定应用程序而不包括通知和覆盖层的Android屏幕录制器，你可以使用MediaProjection API来捕获屏幕内容，并使用MediaCodec API将捕获的内容编码为视频文件。以下是一个示例代码：

首先，你需要在AndroidManifest.xml文件中添加必要的权限：

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.MEDIA_CONTENT_CONTROL" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />

然后，在你的Activity中，你可以使用以下代码来请求录制屏幕的权限：

private static final int REQUEST_CODE_RECORD_SCREEN = 1;
private MediaProjectionManager mediaProjectionManager;
private MediaProjection mediaProjection;
private VirtualDisplay virtualDisplay;
private MediaCodec mediaCodec;
private Surface inputSurface;
private String outputPath;
private int screenWidth;
private int screenHeight;
private int screenDensity;

private boolean isRecording = false;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // 初始化MediaProjectionManager
    mediaProjectionManager = (MediaProjectionManager) getSystemService(Context.MEDIA_PROJECTION_SERVICE);

    // 获取屏幕尺寸和密度
    DisplayMetrics metrics = getResources().getDisplayMetrics();
    screenWidth = metrics.widthPixels;
    screenHeight = metrics.heightPixels;
    screenDensity = metrics.densityDpi;

    // 设置输出文件路径
    outputPath = Environment.getExternalStorageDirectory() + "/recorded_video.mp4";

    // 请求录制屏幕的权限
    startActivityForResult(mediaProjectionManager.createScreenCaptureIntent(), REQUEST_CODE_RECORD_SCREEN);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == REQUEST_CODE_RECORD_SCREEN) {
        if (resultCode == RESULT_OK) {
            // 获取MediaProjection
            mediaProjection = mediaProjectionManager.getMediaProjection(resultCode, data);

            // 创建MediaCodec编码器
            try {
                mediaCodec = MediaCodec.createEncoderByType(MediaFormat.MIMETYPE_VIDEO_AVC);
                MediaFormat format = MediaFormat.createVideoFormat(MediaFormat.MIMETYPE_VIDEO_AVC, screenWidth, screenHeight);
                format.setInteger(MediaFormat.KEY_BIT_RATE, 6000000);
                format.setInteger(MediaFormat.KEY_FRAME_RATE, 30);
                format.setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface);
                format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 1);
                mediaCodec.configure(format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
                inputSurface = mediaCodec.createInputSurface();
                mediaCodec.start();
            } catch (IOException e) {
                e.printStackTrace();
            }

            // 创建VirtualDisplay并开始录制
            virtualDisplay = mediaProjection.createVirtualDisplay("ScreenCapture",
                    screenWidth, screenHeight, screenDensity,
                    DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR,
                    inputSurface, null, null);

            isRecording = true;
        }
    }
}

private void stopRecording() {
    if (isRecording) {
        isRecording = false;

        // 停止并释放VirtualDisplay
        if (virtualDisplay != null) {
            virtualDisplay.release();
            virtualDisplay = null;
        }

        // 停止并释放MediaProjection
        if (mediaProjection != null) {
            mediaProjection.stop();
            mediaProjection = null;
        }

        // 停止并释放MediaCodec编码器
        if (mediaCodec != null) {
            mediaCodec.stop();
            mediaCodec.release();
            mediaCodec = null;
        }

        // 保存录制的视频文件
        try {
            MediaMuxer mediaMuxer = new MediaMuxer(outputPath, MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4);

            // 添加视频轨道
            int videoTrackIndex = mediaMuxer.addTrack(mediaCodec.getOutputFormat());
            mediaMuxer.start();

            // 读取并写入编码后的视频数据
            ByteBuffer[] inputBuffers = mediaCodec.getInputBuffers();
            ByteBuffer[] outputBuffers = mediaCodec.getOutputBuffers();
            MediaCodec.BufferInfo bufferInfo = new MediaCodec.BufferInfo();
            boolean isEOS = false;
            while (!isEOS) {
                int inputIndex = mediaCodec.dequeueInputBuffer(-1);
                if (inputIndex >= 0) {
                    ByteBuffer inputBuffer = inputBuffers[inputIndex];
                    inputBuffer.clear();
                    int sampleSize = extractor.readSampleData(inputBuffer, 0);