这为我工作如何强制UIViewController到肖像iOS 6中的方向

从UINavigationController创建一个新类别，覆盖旋转方法：

Create a new category from UINavigationController overriding the rotating methods:

-(BOOL)shouldAutorotate
{
    return [self.topViewController shouldAutorotate];
}

-(NSUInteger)supportedInterfaceOrientations
{
    return [self.topViewController supportedInterfaceOrientations];
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return [self.topViewController preferredInterfaceOrientationForPresentation];
}

@end 

问候！