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POCannot get current position of CALayer during animation
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copied!<p>I am trying to achieve an animation that when you hold down a button it animates a block down, and when you release, it animates it back up to the original position, but I cannot obtain the current position of the animating block no matter what. Here is my code:</p> <pre><code>-(IBAction)moveDown:(id)sender{ CGRect position = [[container.layer presentationLayer] frame]; [movePath moveToPoint:CGPointMake(container.frame.origin.x, position.y)]; [movePath addLineToPoint:CGPointMake(container.frame.origin.x, 310)]; CAKeyframeAnimation *moveAnim = [CAKeyframeAnimation animationWithKeyPath:@"position"]; moveAnim.path = movePath.CGPath; moveAnim.removedOnCompletion = NO; moveAnim.fillMode = kCAFillModeForwards; CAAnimationGroup *animGroup = [CAAnimationGroup animation]; animGroup.animations = [NSArray arrayWithObjects:moveAnim, nil]; animGroup.duration = 2.0; animGroup.removedOnCompletion = NO; animGroup.fillMode = kCAFillModeForwards; [container.layer addAnimation:animGroup forKey:nil]; } -(IBAction)moveUp:(id)sender{ CGRect position = [[container.layer presentationLayer] frame]; UIBezierPath *movePath = [UIBezierPath bezierPath]; [movePath moveToPoint:CGPointMake(container.frame.origin.x, position.y)]; [movePath addLineToPoint:CGPointMake(container.frame.origin.x, 115)]; CAKeyframeAnimation *moveAnim = [CAKeyframeAnimation animationWithKeyPath:@"position"]; moveAnim.path = movePath.CGPath; moveAnim.removedOnCompletion = NO; moveAnim.fillMode = kCAFillModeForwards; CAAnimationGroup *animGroup = [CAAnimationGroup animation]; animGroup.animations = [NSArray arrayWithObjects:moveAnim, nil]; animGroup.duration = 2.0; animGroup.removedOnCompletion = NO; animGroup.fillMode = kCAFillModeForwards; [container.layer addAnimation:animGroup forKey:nil]; } </code></pre> <p>But the line </p> <pre><code> CGRect position = [[container.layer presentationLayer] frame]; </code></pre> <p>is only returning the destination position not the current position. I need to basically give me the current position of the container thats animating once I release the button, so I can perform the next animation. What I have now does not work.</p>

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