title: How to update progressbar in a ListView item
body: <p>I have a <code>ListView</code> attached to an <code>ArrayAdapter</code>. When the user clicks a download button for an item in the <code>ListView</code> a download starts using the <code>DownloadManager</code>.</p>
  
  <p>What I want to do is to track the download progress with a progress bar (placed in the item layout). How can this be achieved?</p>
  
  <p>The way Pocket Cast does it is exacly what I'm after:</p>
  
  <p><a href="http://www.mrcrab.net/images/thumb_big/9982-Pocket_Casts_Apk_v4.3.2_Android-0.jpg">Pocket Cast exampel http://www.mrcrab.net/images/thumb_big/9982-Pocket_Casts_Apk_v4.3.2_Android-0.jpg</a></p>
  
  <p><em>Note: I know how to work with the <code>DownloadManager</code>, it's the instant update of the progress bar that is tricky.</em></p>