title: VideoView show on GLSurfaceView?
body: <p>recently,I'm doing android development,there have been a question that always confused me for a long time.I want to show VideoView on GLSurfaceView, my code is as following:</p>
  
  <pre><code>   setContentView(glSurfaceView,new LayoutParams( 
                             LayoutParams.FILL_PARENT,
                             LayoutParams.FILL_PARENT)); 
     videoView= View.inflate(QCARSampleActivity.this, R.layout.main, null);
     addContentView(videoView, new LayoutParams(    LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
     mVideoView = (VideoView) overlayView.findViewById(R.id.mVideoView);
  </code></pre>
  
  <p>code of playing video is as following:</p>
  
  <pre><code>                    videoView.setVisibility(View.VISIBLE);
                      mVideoView.setVisibility(View.VISIBLE);        
                      mVideoView.setVideoPath(path);
                      mVideoView.setMediaController(new MediaController(this));
                      mVideoView.requestFocus();
                      mVideoView.start();
  </code></pre>
  
  <p>when I run it,it works ok,but only hear sound,can't see video,why? please?</p>