title: CABasicAnimation Repeat itself
body: <p>I have a CABasicAnimation that I perform on multiple layers and all it does is move the UIImageView up 10 pixels and then back down. I want this to continue ad infinitum. When the animation finishes I can't figure out how to get it to do it again! I understand theres a animationDidStop method but that doesn't solve my problem because I can't detect the layer that stopped moving.</p>
  
  <p>How would I achieve animating a UIImageView in a constant up and down animation? I tried with [UIImageView beginAnimations] etc... but there isn't a comulative value for those type of animations</p>