title: UIActionSheet buttonIndex
body: <p>I have a UIActionSheet in my app that defaults to having 4 buttons. If a user customises an image the action sheet gains an extra 5th button allowing the user to reset this image.</p>
  
  <p>I'm using this delegate method to determine which action sheet button has been clicked:</p>
  
  <pre><code>-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex 
  </code></pre>
  
  <p>The problem is the cancel button is at buttonIndex 2 by default but when the 5th button is present it is at buttonIndex 3. Is there anyway from knowing the buttonIndex you can access the title/name of the action sheet button?</p>