Unable to animate UISearchBar frame or borders

Question

I want to animate the position of a UISearchBar, but there is no animation effect when I change the frame or bounds property of the UISearchBar (in the center, alpha dose of the animation).
This is iOS SDK 4.2, is there an error? I'm confused...

Answer 1

The problem is that some inner lines in the search bar cause the resize to ignore the animation.

It worked for me -

[UIView animateWithDuration:0.2 animations:^ { [searchBar setFrame:searchBarFrame]; [searchBar setNeedsLayout]; }]; 

Where searchBarFrame is the frame to set (I save it before the search bar changes for the first time)

Answer 2

Use the UIViewAnimationOptionLayoutSubviews parameter:

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

Answer 3

Try the following:

 [UIView animateWithDuration:0.3 animations:^{ self.searchDisplayController.searchBar.frame = CGRectMake(0, 200, 320, 44); }];