Is it possible to set an image into motion along a predetermined path with the push of a button in iphone SDK? I'm not looking for anything fancy. I working on a simple concept, but this would save a lot of animation work.
Yes. You can animate any CALayer along a path by creating a CAKeyframeAnimation and assigning a CGPath to its path property. See this blog post by Bill Dudney for an example.
来源：https://stackoverflow.com/questions/2357800/moving-image-along-predetermined-path