UIView animations with autoreverse

Question

I have a problem with the setting UIViewAnimationOptionAutoReverse. Here is my code.

CALayer *aniLayer = act.viewToChange.layer;
[UIView animate         


        

Answer 1

There is a repeatCount property on CAMediaTiming. I think you have to create an explicit CAAnimation object, and configure it properly. The repeatCount for grow and ungrow would be 2, but you can test this.

Something a long the lines of this. You would need two CAAnimation objects though, one for the frame and one for the rotation.

CABasicAnimation *theAnimation;

theAnimation=[CABasicAnimation animationWithKeyPath:@"transform.rotation"];
theAnimation.duration=3.0;
theAnimation.repeatCount=1;
theAnimation.autoreverses=YES;
theAnimation.fromValue=[NSNumber numberWithFloat:0.0];
theAnimation.toValue=[NSNumber numberWithFloat:degreesToRadians(34)];
[theLayer addAnimation:theAnimation forKey:@"animateRotation"];

AFAIK there is no way to avoid programming two animation objects.