use CATransition will give us smoother animation than original UIView animation, and we can set more "Hidden" transition type.

CATransition* trans = [CATransition animation];
[trans setType:kCATransitionPush];
[trans setDuration:0.5];
[trans setSubtype:kCATransitionFromBottom];
// code to change the view//
CALayer *layer = rootViewController.view.layer;
[layer addAnimation:trans forKey:@"Transition"];