System/Library/Frameworks/ContactsUI.framework

CNPortraitOnlyNavigationController.h

Download CNPortraitOnlyNavigationController.h

1. NSObject
2. >
3. UIResponder
4. >
5. UIViewController
6. >
7. UINavigationController

@interface CNPortraitOnlyNavigationController : UINavigationController

- (unsigned long long)supportedInterfaceOrientations;

@end