title: How to get ID3 tag of URL music
body: <p>I want to get the ID3 tag of URL music file.
  I try below code:</p>
  
  <pre><code>Uri mp3 = Uri.parse(URL);
  MediaMetadataRetriever mmr = new MediaMetadataRetriever();
  mmr.setDataSource(this, mp3);
  </code></pre>
  
  <p>I want to get the embedded picture of the mp3 file and show it in ImageView.
  How can I do to arrive it?</p>