How do I get more control of UIImageView animation?
<p>I'm trying to display a series of images in a animation where the duration between the images changes frame to frame.  I can successfully animate images where the duration is the same.  I've looked into subclassing UIImageView but it doesn't seem to allow you access anything that could be helpful.</p>

<p>I've also looked into subclassing UIView directly but it seems like I'd have to write a lot of the stuff that UIImageView already does for me.  </p>

<p>Is there a way to do this with UIImageView?  Or if I am going to have to build my own UIView animation can someone point me the right direction to get started?  Thanks.</p>
