How can I animate zoom in / zoom out on iOS using Objective C?

Question

I\'m looking to replicate the zoom in / zoom out animations so common in iOS applications (example #1, #2). I am specifically looking for a source that can provide some comm

Answer 1

Use following code for zoom in and zoom out animation.

For Zoom In:

- (void)popUpZoomIn{
popUpView.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.001, 0.001);
[UIView animateWithDuration:0.5
                 animations:^{
                     popUpView.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1.0, 1.0);
                 } completion:^(BOOL finished) {

                 }];
}

For Zoom Out:

- (void)popZoomOut{
[UIView animateWithDuration:0.5
                 animations:^{
                     popUpView.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.001, 0.001);
                 } completion:^(BOOL finished) {
                     popUpView.hidden = TRUE;
                 }];
}