title: Knowing which image in a UIImageView Animation
body: <p>Is there any way to know which image is currently being displayed in the built in animation within a UIImageView?</p>
  
  <p>I have 5 images which I need to animate through. The UIImageView provides a simple method to do this through the</p>
  
  <pre><code>animationImageView.animationImages = [NSArray ...];
  animationImageView.animationDuration = 5;
  animationImageView.animationRepeatCount = 0;
  [animationImageView startAnimating];
  </code></pre>
  
  <p>But I would like to have some visual representation of which image is currently being shown. I was thinking of using the UIPageControl and having the dot highlighted represent the current image.</p>
  
  <p>Is there any way to link these two, so the animation within the UIImageView can update the UIPageControl? Or do I need to write my own transitions between UIImageViews? If so can you point me in the right direction of writing a simple animation between images?</p>
  
  <p>thanks</p>