In my iOS app I have a screen with a bunch of icons that have a wiggle effect. When I press and hold one of them they start to shake (like iphone's menu) but if I press the home button (to send my app to background) the iphone freezes! After some time, it restarts itself. This is the source I'm using to do the effect:
CABasicAnimation* anim = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
[anim setToValue:[NSNumber numberWithFloat:0.0f]];
[anim setFromValue:[NSNumber numberWithDouble:M_PI/30]];
[anim setDuration:0.1];
[anim setRepeatCount:NSUIntegerMax];
[anim setAutoreverses:YES];
[self.layer addAnimation:anim forKey:@"SpringboardShake"];
And to stop:
[self.layer removeAllAnimations];
This problem only happens in iOS 5. The same code works fine in iOS 4. Any ideas about what would be making my device freezes?
The same problem occured with me. A solution can be found here.
To have a smooth animation, you need to increase your calculations speed. So, one form is decreasing the things we need to calculate.