iOS 6 UITabBarController supported orientation with current UINavigation controller

Question

I have an iPhone app I am updating to iOS 6 that is having rotation issues. I have a UITabBarController with 16 UINavigationCotrollers. Most of the

Answer 1

I think is better something like that (as a category method)

-(NSUInteger) supportedInterfaceOrientations {
    if([self.topViewController respondsToSelector:@selector(supportedInterfaceOrientations)])
    {
        return [self.topViewController supportedInterfaceOrientations];
    }
    return UIInterfaceOrientationMaskPortrait;
}

this ensures that the method is implemented. If you aren't doing this check and the method is not implemented (like in iOS5 env) the app should crash!