Touches not recognized after custom transition - ios

Question

I have an issue with custom transitions on the iPad. I create a custom transition that animates correctly and seems to work (i.e. the transition occurs). However, when I arrive at the destination view controller (after executing the isLoggedIn block), the destination view controller is unresponsive (it doesn't respond to touch events). II have a feeling it has something to do with the call to [container insertSubview:toViewController.view belowSubview:fromViewController.view]; because if I call [container insertSubview:toViewController.view aboveSubview:fromViewController.view]; the touches work as expected (but you cannot see the animation, as it happens on the source view controller).
Any idea why the touch events aren't being recognized?
-(void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext {
UIViewController *fromViewController = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
UIViewController *toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
UIView *container = [transitionContext containerView];
//Prepare the view
if (self.isLoggedIn) {
//Insert the main view under the login view
CGRect frame = CGRectMake(0, 0, toViewController.view.frame.size.height,
toViewController.view.frame.size.width);
toViewController.view.frame = frame;
[container insertSubview:toViewController.view belowSubview:fromViewController.view];
} else {
CGRect frame = CGRectMake(0, 0, toViewController.view.frame.size.height,
toViewController.view.frame.size.width);
toViewController.view.frame = frame;
if([toViewController respondsToSelector:#selector(openWalls)]) {
[(DJVLoginViewController*)toViewController openWalls];
}
if([toViewController respondsToSelector:#selector(toggleLoginViewsAlpha:)]) {
[(DJVLoginViewController*)toViewController toggleLoginViewsAlpha:0];
}
//Insert the login view above the main view
[container insertSubview:toViewController.view aboveSubview:fromViewController.view];
}
//Make animations
[UIView animateWithDuration:[self transitionDuration:transitionContext]
animations:^{
if (self.isLoggedIn) {
//Perform animation
} else {
//Perform animation
}
} completion:^(BOOL finished) {
[transitionContext completeTransition:YES];
}];
}

Answer 1

Try to remove fromView from superview:
[UIView animateWithDuration:[self transitionDuration:transitionContext]
animations:^{
if (self.isLoggedIn) {
//Perform animation
} else {
//Perform animation
}
} completion:^(BOOL finished) {
[fromViewController.view removeFromSuperview];
[transitionContext completeTransition:YES];
}];
}