Get current CAAnimation transform value

Question

I want to access get the value of the transform scale at a point in time. Here is the animation creation :

    CABasicAnimation *grow = [CABasicAnimation ani         


        

Answer 1

The CALayer documentation describes presentationLayer quite clearly:

The layer object returned by this method provides a close approximation of the layer that is currently being displayed onscreen. While an animation is in progress, you can retrieve this object and use it to get the current values for those animations.