title: How to parse an asset URL in Objective-c?
body: <p>The iPhone <code>UIImagePickerControllerReferenceURL</code> returns an URL as:</p>
  
  <pre><code>assets-library://asset/asset.PNG?id=1000000001&amp;ext=PNG
  </code></pre>
  
  <p>What's the best (preferably simple) way to retrive <code>1000000001</code> and <code>PNG</code> as <code>NSString</code>s from the above URL example?</p>