// Start Animation Block
CGContextRef context = UIGraphicsGetCurrentContext();
[UIViewbeginAnimations:nil context:context];
[UIViewsetAnimationTransition:UIViewAnimationTransitionFlipFromLeft
¯forView:[self superview] cache:YES];
[UIViewsetAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIViewsetAnimationDuration:1.0];
// Animations
[[self superview] exchangeSubviewAtIndex:0 withSubviewAtIndex:1];
// Commit Animation Block
[UIViewcommitAnimations];