iOS 8 animation bug

Question

I have a simple method for animate view.

-(void)animateSelf
{
    CABasicAnimation * animation;

    animation = [CABasicAnimation animationWithKeyPath:@\"po         


        

Answer 1

You have three animations:

1. You animate the layer's position
2. You animate the layer's transform
3. You animate the view's frame which in turn animates the layer's position.

Animations 1 and 3 collide.

• On iOS 7 the behavior is that animation 3 cancels animation 1.
• On iOS 8 the behavior is that animations 1 and 3 run concurrently ("Additive Animations").

I suggest you just remove animation 1 and also check out the related WWDC 2014 video (I think it was Building Interruptible and Responsive Interactions).