ios 7 custom transition not working for navigation controller - ios

Question

I'm testing around the new iOS 7 custom transition API but i have some troubles with the navigation controller case. I tried a very basic test for the moment with this :
- (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext
{
[transitionContext completeTransition:YES];
}
As you guessed, this code do nothing except to complete the transition with no animations.
But here's the problem : if it's working normally with present / dismiss a controller, all i see with push and pop methods is a black screen, as if [transitionContext completeTransition:YES] didn't work.
I've set all the delegate properties and delegate methods properly, since this method is called all the time (present, dismiss, push, pop).
Did someone already face this issue ?

Answer 1

Try something more like this, I was having trouble with it as well and this helped make more sense of it
- (void)animateTransition:(id <UIViewControllerContextTransitioning>)transitionContext
{
// 1. obtain state from the context
UIViewController *toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
CGRect finalFrame = [transitionContext finalFrameForViewController:toViewController];
// 2. obtain the container view
UIView *containerView = [transitionContext containerView];
// 3. set initial state
CGRect screenBounds = [[UIScreen mainScreen] bounds]; toViewController.view.frame =
CGRectOffset(finalFrame, 0, screenBounds.size.height);
// 4. add the view
[containerView addSubview:toViewController.view];
// 5. animate
NSTimeInterval duration = [self transitionDuration:transitionContext];
[UIView animateWithDuration:duration animations:^{
toViewController.view.frame = finalFrame;
} completion:^(BOOL finished) {
// 6. inform the context of completion
[transitionContext completeTransition:YES];
}];
}
Source: http://www.raywenderlich.com/forums/viewtopic.php?f=37&t=8851