I've searched loads of SO stuff and in Apple's references, but still unable to manage my problem.
UIImageView
s and 2 UIButton
s connected to themviewDidLoad
UIImageView
) it triggers animation of appropriate UIImageView
–only one, not both–(also scale up, then down).How do I cancel a running animation? I've managed to cancel after all but the last one... :/
Here is my code snippet:
[UIImageView animateWithDuration:2.0
delay:0.1
options:UIViewAnimationOptionAllowUserInteraction
animations:^{
isAnimating = YES;
self.bigLetter.transform = CGAffineTransformScale(self.bigLetter.transform, 2.0, 2.0);
} completion:^(BOOL finished){
if(! finished) return;
[UIImageView animateWithDuration:2.0
delay:0.0
options:UIViewAnimationOptionAllowUserInteraction
animations:^{
self.bigLetter.transform = CGAffineTransformScale(self.bigLetter.transform, 0.5, 0.5);
} completion:^(BOOL finished){
if(! finished) return;
[UIImageView animateWithDuration:2.0
delay:0.0
options:UIViewAnimationOptionAllowUserInteraction
animations:^{
self.smallLetter.transform = CGAffineTransformScale(self.smallLetter.transform, 2.0, 2.0);
} completion:^(BOOL finished){
if(! finished) return;
[UIImageView animateWithDuration:2.0
delay:0.0
options:UIViewAnimationOptionAllowUserInteraction
animations:^{
self.smallLetter.transform = CGAffineTransformScale(self.smallLetter.transform, 0.5, 0.5);
}
completion:^(BOOL finished){
if (!finished) return;
//block letter buttons
[self.bigLetterButton setUserInteractionEnabled:YES];
[self.smallLetterButton setUserInteractionEnabled:YES];
//NSLog(@"vieDidLoad animations finished");
}];
}];
}];
}];
Somehow the smallLetter
UIImageView
is not working properly, because when pressed (through button) bigLetter
is canceling animations properly...
EDIT:
I've used this solution, but still having problem with scaling down smallLetter
UIImageView
- not cancelling at all...
solution
EDIT2: I've added this at the beginning of next/prev methods:
- (void)stopAnimation:(UIImageView*)source {
[UIView animateWithDuration:0.01
delay:0.0
options:(UIViewAnimationOptionBeginFromCurrentState | UIViewAnimationOptionAllowUserInteraction)
animations:^ {
source.transform = CGAffineTransformIdentity;
}
completion:NULL
];
}
problem stays... :/ no idea how to interrupt last animation for letters in animation chain
You can stop all animations on a view by calling:
[view.layer removeAllAnimations];
(You'll need to import the QuartzCore framework to call methods on view.layer).
If you want to stop a specific animation, not all animations, your best best bet is to use CAAnimations explicitly rather than the UIView animation helper methods, then you will have more granular control and can stop animations explicitly by name.
The Apple Core Animation documentation can be found here: