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POHow come my Core Animation transformation always returns to it's start-state?
 

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  1. POHow come my Core Animation transformation always returns to it's start-state?
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    <p>I am trying to perform some kind of animation of a layer in my iPhone application. It does not matter what I do I always get the same results: after the animation is done it jerks back into it's original position. Even though I set <code>removedOnCompletion</code> to false there is no difference.</p> <p>What am I missing here?</p> <p>Thanks in advance!</p> <p><strong>EDIT:</strong> Really need help with this one guys. I am creating animations with <code>CAKeyframeAnimation</code> and <code>CABasicAnimation</code> objects, then adding them to a <code>CAAnimationGroup</code> which I in turn att to the layer. The animation works as predicted except that it always snaps back to it's original state. This is the case even though I set <code>removedOnCompletion = NO;</code> on all animation-objects and the animation group.</p> <p>Some one please point me in the right direction! I you live in the Stockholm area I will buy you a coffe. =) New code posted below:</p> <pre><code>CABasicAnimation *leveloutLeafAnimation = [CABasicAnimation animationWithKeyPath:@"transform"]; leveloutLeafAnimation.removedOnCompletion = NO; leveloutLeafAnimation.duration = 1.0; leveloutLeafAnimation.repeatDuration = 20; CATransform3D transformLeafToRotation = CATransform3DMakeRotation(0.0, 0.0, 0.0, 1); CATransform3D transformLeafFromRotation = CATransform3DMakeRotation([self _degreesToRadians:270.0], 0.0, 0.0, 1); leveloutLeafAnimation.fromValue = [NSValue valueWithCATransform3D:transformLeafFromRotation]; leveloutLeafAnimation.toValue = [NSValue valueWithCATransform3D:transformLeafToRotation]; //Create an animation group to combine the animations. CAAnimationGroup *theAnimationGroup = [CAAnimationGroup animation]; //The animationgroup conf. theAnimationGroup.delegate = self; theAnimationGroup.duration = animationDuration; theAnimationGroup.removedOnCompletion = NO; theAnimationGroup.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]; theAnimationGroup.animations = [NSArray arrayWithObjects:leveloutLeafAnimation, leafMoveAnimation, nil]; // Add the animation group to the leaf layer. [leafViewLayer addAnimation:theAnimationGroup forKey:@"animatLeafFalling"]; </code></pre>
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