android video, hear sound but no video

Question

I have tried several different examples but I cannot get any video to show. I hear sound but no video. I thought maybe I just had a incorrect video format so I downloaded a

Answer 1

You class must implement SurfaceHolder.Callback and call methods setDisplay, prepare and etc only after you get in surfaceCreated. Also you may need to change type of surface holder to SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS. Like this:

import android.view.SurfaceHolder.Callback;

public class TestActivity extends Activity implements Callback {

// ...

    @Override
    public void onCreate(Bundle savedInstanceState) {
        // ...
        mSurfaceView = (SurfaceView)findViewById(R.id.yousurfaceview); 
        holder = mSurfaceView.getHolder();
        holder.addCallback(this);
        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
    }

@Override
public void surfaceCreated(SurfaceHolder holder) {
    try {
        mp.setDisplay(holder);
        mp.setDataSource(somesource);
        mp.prepare();
        mp.start();
        // etc...
    } catch (IOException e) {
        } catch (IllegalArgumentException e) {
        } catch (IllegalStateException e) {
    }

}

// ...
}

If you try it in OnCreate you got nothing as result, because Surface is not yet created...