Technical Q&A QA1673: How to pause the animation of a layer treeQ: How do I pause all animations in a layer tree? A: In order to pause animations in a layer tree, you can take advantage of the fact that a CALayer conforms to the CAMediaTiming protocol. The CAMediaTiming protocol defines, among other things, a speed with which its timeline progresses, which you can use to pause all animations on the target layer. Listing 1 demonstrates how you can do this. List
