iOS 7+ Dismiss Modal View Controller and Force Portrait Orientation

Question

I have a UINavigationController as the root view controller of my UIWindow on iOS 7 and iOS 8. From one of its view controllers, I present a fullscreen modal view controller wit

Answer 1

I ended up subclassing the UINavigationController and overriding its rotation methods. The following solution works on iOS 7, but I believe there is a bug in iOS 8 beta 5 that causes the presenting view controller's view to shrink to half the screen-height after dismissing the modal in landscape orientation.

UINavigationController subclass:

- (BOOL)shouldAutorotate
{
    return NO;
}

- (NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskPortrait;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationPortrait;
}