Can't animate the frame or bounds of a UISearchBar

Question

I want to animate the position of a UISearchBar, but there\'s no animate effect when I change the frame or bounds property of UISearchBar(center, alpha dose animate).

Answer 1

Use the UIViewAnimationOptionLayoutSubviews option:

[UIView animateWithDuration:.25
                      delay:0
                    options:UIViewAnimationOptionLayoutSubviews
                 animations:^{
                     CGRect frame = searchBar.frame;
                     frame.size.width = newWidth;
                     searchBar.frame = frame;
                 } completion:nil
 ];