android mediaprojection

MediaProjectionManager mediaProjectionManager = (MediaProjectionManager) getSystemService(Context.MEDIA_PROJECTION_SERVICE);
Intent captureIntent = mediaProjectionManager.createScreenCaptureIntent();
startActivityForResult(captureIntent, REQUEST_CODE);

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == REQUEST_CODE && resultCode == RESULT_OK) {
        MediaProjection mediaProjection = mediaProjectionManager.getMediaProjection(resultCode, data);
        // 使用 mediaProjection 进行屏幕捕获
    }
}

public class ScreenRecorder {
    private MediaProjection mediaProjection;
    private VirtualDisplay virtualDisplay;
    private MediaRecorder mediaRecorder;

    public void startRecording() {
        mediaRecorder = new MediaRecorder();
        mediaRecorder.setVideoSource(MediaRecorder.VideoSource.SURFACE);
        mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
        mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
        mediaRecorder.setVideoSize(1280, 720);
        mediaRecorder.setVideoEncodingBitRate(5 * 1024 * 1024);
        mediaRecorder.setVideoFrameRate(30);
        mediaRecorder.setOutputFile("/path/to/output.mp4");
        mediaRecorder.prepare();

        Surface surface = mediaRecorder.getSurface();
        virtualDisplay = mediaProjection.createVirtualDisplay("ScreenRecorder",
                1280, 720, 30, DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR,
                surface, null, null);

        mediaRecorder.start();
    }

    public void stopRecording() {
        if (mediaRecorder != null) {
            mediaRecorder.stop();
            mediaRecorder.release();
        }
        if (virtualDisplay != null) {
            virtualDisplay.release();
        }
    }
}