v = new VideoView(this){
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
setMeasuredDimension(vWi,vHe);
}
};
v.setVideoURI(Uri.parse("rtsp://xxxxxxxxx"));
v.requestFocus();
v.start();
How to take a screenshot? I try take screenshot, but picture is black.
Umer Kiani
This is how it goes to capture screenshot of current frame in videoview
public class MainActivity extends Activity {
MediaMetadataRetriever mediaMetadataRetriever;
MediaController myMediaController;
VideoView myVideoView;
String viewSource = "/storage/sdcard0/DCIM/100MEDIA/VIDEO0009.mp4";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mediaMetadataRetriever = new MediaMetadataRetriever();
mediaMetadataRetriever.setDataSource(viewSource);
myVideoView = (VideoView) findViewById(R.id.videoview);
myVideoView.setVideoURI(Uri.parse(viewSource));
myMediaController = new MediaController(this);
myVideoView.setMediaController(myMediaController);
myVideoView.setOnCompletionListener(myVideoViewCompletionListener);
myVideoView.setOnPreparedListener(MyVideoViewPreparedListener);
myVideoView.setOnErrorListener(myVideoViewErrorListener);
myVideoView.requestFocus();
myVideoView.start();
Button buttonCapture = (Button) findViewById(R.id.capture);
buttonCapture.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
int currentPosition = myVideoView.getCurrentPosition(); // in
// millisecond
Toast.makeText(MainActivity.this,
"Current Position: " + currentPosition + " (ms)",
Toast.LENGTH_LONG).show();
Bitmap bmFrame = mediaMetadataRetriever
.getFrameAtTime(currentPosition * 1000); // unit in
// microsecond
if (bmFrame == null) {
Toast.makeText(MainActivity.this, "bmFrame == null!",
Toast.LENGTH_LONG).show();
} else {
AlertDialog.Builder myCaptureDialog = new AlertDialog.Builder(
MainActivity.this);
ImageView capturedImageView = new ImageView(
MainActivity.this);
capturedImageView.setImageBitmap(bmFrame);
LayoutParams capturedImageViewLayoutParams = new LayoutParams(
LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
capturedImageView
.setLayoutParams(capturedImageViewLayoutParams);
myCaptureDialog.setView(capturedImageView);
myCaptureDialog.show();
}
}
});
}
MediaPlayer.OnCompletionListener myVideoViewCompletionListener = new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer arg0) {
Toast.makeText(MainActivity.this, "End of Video", Toast.LENGTH_LONG)
.show();
}
};
MediaPlayer.OnPreparedListener MyVideoViewPreparedListener = new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
long duration = myVideoView.getDuration(); // in millisecond
Toast.makeText(MainActivity.this,
"Duration: " + duration + " (ms)", Toast.LENGTH_LONG)
.show();
}
};
MediaPlayer.OnErrorListener myVideoViewErrorListener = new MediaPlayer.OnErrorListener() {
@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
Toast.makeText(MainActivity.this, "Error!!!", Toast.LENGTH_LONG)
.show();
return true;
}
};
}
You can Read More About it at Here http://android-er.blogspot.com/2013/05/get-current-frame-in-videoview-using.html
来源：https://stackoverflow.com/questions/24990002/how-to-take-a-screenshot-of-androids-videoview-from-rtsp-streaming