Animate drawing of CALayer with spring animation

Question

I want to animate drawing an arc onscreen but I want it to have the spring effect found in iOS 7's UIView animate... usingSpringDamping: API. I know I can use Core Animation directly by creating a CABasicAnimation but then I lose out on the nice spring effect, and the built-in timing functions stop at EaseOut, which isn't really what I want. Ideally the arc would draw to a target angle, overshoot it, then bounce back and forth until it settled on the target.

Is there a way to do this without writing my own timing function / subclassing CAAnimation?

Answer 1

Try to use CASpringAnimation, it has the same API as UIView Spring Animation.