Reset animation state during user interaction - ios

Question

I have a circle that users can touch, when you touch it it changes size then reverts back to its original size to indicate you touched it. I want users to be able to touch it as often as they like regardless of whether its currently animating or not. I updated my animation to use the UIViewAnimationOptionAllowUserInteraction flag which does allow me to touch it during the animation but it doesnt behave as I'd expect.
I think I need to somehow stop the currently playing animation, reset the size to normal and then play it again, is this correct and if so how do I do it? If not what do I do?
- (void)pop{
[view.layer removeAllAnimations];
[UIView animateWithDuration:0.2
delay:0.0
options:UIViewAnimationOptionAutoreverse | UIViewAnimationOptionCurveEaseOut | UIViewAnimationOptionAllowUserInteraction // reverse back to original value
animations:^{
// scale down 20%
self.transform = CGAffineTransformMakeScale(0.8, 0.8);
} completion:^(BOOL finished) {
self.transform = CGAffineTransformMakeScale(1, 1);
}];
}

Answer 1

self.btn = [[UIButton alloc] initWithFrame:CGRectMake(200, 200, 100, 30)];
[self.btn addTarget:self action:#selector(tapDown:) forControlEvents:UIControlEventTouchDown];
[self.btn addTarget:self action:#selector(tapUp:) forControlEvents:UIControlEventTouchUpInside];
- (IBAction)tapDown:(id)sender
{
[UIView animateWithDuration:0.2
delay:0.0
options: UIViewAnimationOptionCurveEaseOut | UIViewAnimationOptionAllowUserInteraction
animations:^{
// scale down 20%
self.btn.transform = CGAffineTransformMakeScale(0.8, 0.8);
} completion:nil];
}
- (IBAction)tapUp:(id)sender {
[UIView animateWithDuration:0.2
delay:0.0
options:UIViewAnimationOptionCurveEaseOut | UIViewAnimationOptionAllowUserInteraction // reverse back to original value
animations:^{
// scale up to 100%
self.btn.transform = CGAffineTransformMakeScale(1, 1);
} completion:nil];
}

Answer 2

Sure this is not what you want? When the player taps and pop is called the animation should start over?
- (void)pop{
self.transform = CGAffineTransformMakeScale(1, 1); // If you want the animation to start over you need to reset the size before staring it again
[view.layer removeAllAnimations];
[UIView animateWithDuration:0.2
delay:0.0
options: options:UIViewAnimationOptionAutoreverse | UIViewAnimationOptionCurveEaseOut| UIViewAnimationOptionAllowUserInteraction // reverse back to original value
animations:^{
// scale down 20%
self.transform = CGAffineTransformMakeScale(0.8, 0.8);
} completion:^(BOOL finished) {
self.transform = CGAffineTransformMakeScale(1, 1);
}];
}