Stop an UIView Animation

Question

Possible Duplicate:
Cancel a UIView animation?

I have the following animation and i want to stop it when i press a button. Can you please tell me how can i do it? I can't figure it out how. Thanks.

-(void)animationLoop:(NSString *)animationID finished:(NSNumber *)finished context:(void    *)context 
{
[UIView beginAnimations:@"Move randomly" context:nil]; 
[UIView setAnimationDuration:1]; 
// [UIView setAnimationBeginsFromCurrentState:NO];


CGFloat x = (CGFloat) (arc4random() % (int) self.bounds.size.width); 
CGFloat y = (CGFloat) (arc4random() % (int) self.bounds.size.height); 

CGPoint squarePostion = CGPointMake(x, y); 
strechView.center = squarePostion; 

[UIView setAnimationDelegate:self]; 
[UIView setAnimationDidStopSelector:@selector(animationLoop:finished:context:)];

[UIView commitAnimations];

} 

Solution 1

Try this:

[myView.layer removeAllAnimations];

and be sure to import the Quartz framework as well:

#import <QuartzCore/QuartzCore.h>

Animations are applied using CoreAnimation in the QuartzCore framework, even the UIView animation methods. Just target the view's layer that you want to stop animating, and remove its animations.

Solution 2

You could do this:

[self.view.layer removeAnimationForKey:@"Move randomly"];

This is more effective than calling [self.view.layer removeAllAnimations] because this can potentially remove other animations that you would want to keep.