UIViewAnimationWithBlocks + not responding IBActions on 4.3

[alpopek]

Hi

I'm developing a simple game for iOS from 4.0 to 5.0.
When i started testing it on older devices i noticed some errors.

Everything works fine on iOS 5.0, but on 4.3.3 (3GS) this part of code:

[UIView animateWithDuration:0.7
                        delay:0 
                        options:UIViewAnimationOptionAutoreverse | UIViewAnimationOptionRepeat
                     animations:^{[self.touchLbl setAlpha:0.3];} 
                     completion:nil];

is the reason why my buttons are not responding.
This animation is setting UILabel alpha up/down in infinite loop.

Buttons are properly set using IBAction - it works on iOS 5.

Anyone know how to solve it?

[alpopek]

I fixed it using CoreAnimation... and now it works
but i still don't know why it's blocking UI on iOS<5

[Duncan C]

Originally Posted by alpopek

Hi

I'm developing a simple game for iOS from 4.0 to 5.0.
When i started testing it on older devices i noticed some errors.

Everything works fine on iOS 5.0, but on 4.3.3 (3GS) this part of code:

[UIView animateWithDuration:0.7
                        delay:0 
                        options:UIViewAnimationOptionAutoreverse | UIViewAnimationOptionRepeat
                     animations:^{[self.touchLbl setAlpha:0.3];} 
                     completion:nil];

is the reason why my buttons are not responding.
This animation is setting UILabel alpha up/down in infinite loop.

Buttons are properly set using IBAction - it works on iOS 5.

Anyone know how to solve it?

That's the default behavior for animations.

I lifted this from the Apple docs:

During an animation, user interactions are temporarily disabled for all views involved in the animation, regardless of the value in this property [userInteractionEnabled] You can disable this behavior by specifying the UIViewAnimationOptionAllowUserInteraction option when configuring the animation.

If you change your code like this:

[UIView animateWithDuration:0.7
  delay:0 
  options:UIViewAnimationOptionAutoreverse | 
  UIViewAnimationOptionRepeat|
  UIViewAnimationOptionAllowUserInteraction
  animations:^{[self.touchLbl setAlpha:0.3];} 
  completion:nil];

Then the user should be able to tap on your button while the animation is active.