iOS CAKeyframeAnimation rotationMode on UIImageView

Question

I am experimenting with Key Frame animation of the position of a UIImageView object moving along a bezier path. This pic shows the initial state before animation. The blue

Answer 1

Yow mention that you kick off the animation with "rotationMode set to YES", but the documentation states that rotationMode should be set using an NSString...

In particular:

These constants are used by the rotationMode property.

NSString * const kCAAnimationRotateAuto

NSString * const kCAAnimationRotateAutoReverse

Have you tried setting:

keyframe.animationMode = kCAAnimationRotateAuto;

The documentation states:

kCAAnimationRotateAuto: The objects travel on a tangent to the path.