iOS7 UIModalTransitionStyleFlipHorizontal bounces after transition

Question

I\'m updating my app for iOS 7 and I discovered a weird problem. I\'m presenting a UIViewController wrapped in a UINavigationController with UIModalTransitionStyleFlip

Answer 1

To solve this problem for present & dismiss, I use the iOS7 custom transition.

Add this to your UIViewController :

- (id )animationControllerForPresentedController:(UIViewController *)presented presentingController:(UIViewController *)presenting sourceController:(UIViewController *)source {
    return (id)self;
}

- (id )animationControllerForDismissedController:(UIViewController *)dismissed {
    return (id)self;
}

- (NSTimeInterval)transitionDuration:(id )transitionContext {
    return 0.7f;
}

- (void)animateTransition:(id )transitionContext {
    UIView *containerView = [transitionContext containerView];


    UIViewController *fromVC = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
    [containerView addSubview:fromVC.view];

    UIViewController *toVC = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
    [containerView addSubview:toVC.view];

    UIViewAnimationOptions animationOption = ([toVC.presentedViewController isEqual:fromVC])?UIViewAnimationOptionTransitionFlipFromLeft:UIViewAnimationOptionTransitionFlipFromRight;


    [UIView transitionFromView:fromVC.view
                        toView:toVC.view
                      duration:[self transitionDuration:transitionContext]
                       options:animationOption
                    completion:^(BOOL finished) {
                        [transitionContext completeTransition:YES];
                    }];
}

To use it, you just had to check if you are on iOS7 and set the transitionDelegate :

YourVCWithTheCustomTransition* yourVC = [[YourVCWithTheCustomTransition alloc] init];

CGFloat deviceVersion = [UIDevice currentDevice].systemVersion.floatValue;
if(deviceVersion >= 7.0) [yourVC setTransitioningDelegate:yourVC];

[self presentModalViewController:yourVC animated:YES];
[yourVC release];

In my case, I had a custom UINavigationController where the custom transition is defined : i don't have to do this each time.