UINavigationController custom transitions

gistfile1.m

// With transitionWithView
[UIView transitionWithView:self.navigationController.view
                  duration:0.5
                   options:UIViewAnimationOptionTransitionFlipFromBottom
                animations:^{
                    [self.navigationController pushViewController:viewController animated:NO];
                }
                completion:nil];


// With CATransition
CATransition *transition = [CATransition animation];
transition.duration = 0.3f;
transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];
transition.type = kCATransitionMoveIn;
transition.subtype = kCATransitionFromTop;
[self.navigationController.view.layer addAnimation:transition forKey:nil];
[self.navigationController pushViewController:viewController animated:NO];