title: Streaming video with videoview
body: <p>My code below to streaming video:</p>
  
  <pre><code>VideoView vv = (VideoView)this.findViewById(R.id.screen_video);
  Uri uri = Uri.parse(URL);
  vv.setVideoURI(uri);
  vv.start();
  </code></pre>
  
  <p>It works.
  But if the URL video's format not support by android phone or pad.
  It show a dialog, and not show the screen.
  But it still streaming with black screen.
  I want to get the error message, and access as an exception.
  But I don't know how to get it?</p>
  
  <p>Another problem is that the streaming may crash cause by low speed wifi.
  How to check it to wait while low speed wifi?</p>