Andrew Andrew - 1 year ago 78
Objective-C Question

Animate a view zoom-bouncing in?

Is there a way to animate a view so that it zooms up and kinda goes a bit too far and rubberbands back to the final size? I'm unsure how to do this sort of animation.

Answer Source

write this code when you want to trigger this animation

popUp.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.001, 0.001);

[self.view addSubview:popUp];

[UIView animateWithDuration:0.3/1.5 animations:^{
    popUp.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1.1, 1.1);
} completion:^(BOOL finished) {
    [UIView animateWithDuration:0.3/2 animations:^{
        popUp.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.9, 0.9);
    } completion:^(BOOL finished) {
        [UIView animateWithDuration:0.3/2 animations:^{
            popUp.transform = CGAffineTransformIdentity;                            
        }];
    }];
}];

This is updated code (from fabio.cionini) as it is accepted answer so updating to latest.