我正在尝试以下代码
public class ScreenCaptureActivity extends AppCompatActivity {
private static final String TAG = "ScreenCaptureActivity";
private static final int REQUEST_CODE = 1000;
private int mScreenDensity;
private MediaProjectionManager mProjectionManager;
private static final int DISPLAY_WIDTH = 720;
private static final int DISPLAY_HEIGHT = 1280;
private MediaProjection mMediaProjection;
private VirtualDisplay mVirtualDisplay;
private MediaProjectionCallback mMediaProjectionCallback;
private ToggleButton mToggleButton;
private MediaRecorder mMediaRecorder;
private static final SparseIntArray ORIENTATIONS = new SparseIntArray();
private Context mContext;
private View mRootView;
static {
ORIENTATIONS.append(Surface.ROTATION_0, 90);
ORIENTATIONS.append(Surface.ROTATION_90, 0);
ORIENTATIONS.append(Surface.ROTATION_180, 270);
ORIENTATIONS.append(Surface.ROTATION_270, 180);
}
@Override
public void onCreate(Bundle savedInstanceState) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
requestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
} else {
requestWindowFeature(Window.FEATURE_NO_TITLE);
}
super.onCreate(savedInstanceState);
mContext = this;
// System.out.println(R.layout.activity_screen_streaming);
setContentView(R.layout.activity_screen_streaming);
mRootView = findViewById(R.id.content);
//mRootView.addOnLayoutChangeListener(this);
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
mScreenDensity = metrics.densityDpi;
mMediaRecorder = new MediaRecorder();
mProjectionManager = (MediaProjectionManager) getSystemService
(Context.MEDIA_PROJECTION_SERVICE);
mToggleButton = (ToggleButton) findViewById(R.id.toggle);
mToggleButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
onToggleScreenShare(v);
}
});
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode != REQUEST_CODE) {
Log.e(TAG, "Unknown request code: " + requestCode);
return;
}
if (resultCode != RESULT_OK) {
Toast.makeText(this,
"Screen Cast Permission Denied", Toast.LENGTH_SHORT).show();
mToggleButton.setChecked(false);
return;
}
mMediaProjectionCallback = new MediaProjectionCallback();
mMediaProjection = mProjectionManager.getMediaProjection(resultCode, data);
mMediaProjection.registerCallback(mMediaProjectionCallback, null);
mVirtualDisplay = createVirtualDisplay();
mMediaRecorder.start();
}
public void onToggleScreenShare(View view) {
if (((ToggleButton) view).isChecked()) {
initRecorder();
shareScreen();
} else {
mMediaRecorder.stop();
mMediaRecorder.reset();
Log.v(TAG, "Stopping Recording");
stopScreenSharing();
}
}
private void shareScreen() {
if (mMediaProjection == null) {
startActivityForResult(mProjectionManager.createScreenCaptureIntent(), REQUEST_CODE);
return;
}
mVirtualDisplay = createVirtualDisplay();
mMediaRecorder.start();
}
private VirtualDisplay createVirtualDisplay() {
return mMediaProjection.createVirtualDisplay("ScreenCaptureActivity",
DISPLAY_WIDTH, DISPLAY_HEIGHT, mScreenDensity,
DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR,
mMediaRecorder.getSurface(), null /*Callbacks*/, null
/*Handler*/);
}
private void initRecorder() {
try {
mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.SURFACE);
mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mMediaRecorder.setOutputFile(Environment
.getExternalStoragePublicDirectory(Environment
.DIRECTORY_DOWNLOADS) + "/video.mp4");
mMediaRecorder.setVideoSize(DISPLAY_WIDTH, DISPLAY_HEIGHT);
mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mMediaRecorder.setVideoEncodingBitRate(512 * 1000);
mMediaRecorder.setVideoFrameRate(30);
int rotation = getWindowManager().getDefaultDisplay().getRotation();
int orientation = ORIENTATIONS.get(rotation + 90);
mMediaRecorder.setOrientationHint(orientation);
mMediaRecorder.prepare();
} catch (IOException e) {
e.printStackTrace();
}
}
private class MediaProjectionCallback extends MediaProjection.Callback {
@Override
public void onStop() {
if (mToggleButton.isChecked()) {
mToggleButton.setChecked(false);
mMediaRecorder.stop();
mMediaRecorder.reset();
Log.v(TAG, "Recording Stopped");
}
mMediaProjection = null;
stopScreenSharing();
}
}
private void stopScreenSharing() {
if (mVirtualDisplay == null) {
return;
}
mVirtualDisplay.release();
//mMediaRecorder.release(); //If used: mMediaRecorder object cannot
// be reused again
destroyMediaProjection();
}
@Override
public void onDestroy() {
super.onDestroy();
destroyMediaProjection();
}
private void destroyMediaProjection() {
if (mMediaProjection != null) {
mMediaProjection.unregisterCallback(mMediaProjectionCallback);
mMediaProjection.stop();
mMediaProjection = null;
}
Log.i(TAG, "MediaProjection Stopped");
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Checks the orientation of the screen
if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
mVirtualDisplay.resize(DISPLAY_WIDTH, DISPLAY_HEIGHT, mScreenDensity);
} else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT) {
mVirtualDisplay.resize(DISPLAY_HEIGHT, DISPLAY_WIDTH, mScreenDensity);
}
}
}
如果我们不调整虚拟显示器的大小,这将非常有效,但是当我们调整虚拟显示器的大小时,录像机视频会像这样
如何通过调整虚拟显示的大小来记录屏幕旋转时的方向变化
我已经检查了几个问题,但没有解决方法
喜欢这些