force UIViewController to be in Landscape mode iOS

问题:

I've implemented the proper functions, but they don't get triggered? I've tried several solutions here on StackOverFlow, but none of them work. I've tried adding the view to a UINavigationController, also doesn't work.

FakeIDDetailViewController.h:

@interface FakeIDDetailViewController : UIViewController
@end

FakeIDDetailViewController.m:

@interface FakeIDDetailViewController ()

-(BOOL)shouldAutorotate
{
    return NO;
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (UIInterfaceOrientationMaskLandscapeLeft);
}

-(NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskLandscapeLeft;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationLandscapeLeft;
}

- (NSUInteger) application:(UIApplication *)application     supportedInterfaceOrientationsForWindow:(UIWindow *)window {
    return UIInterfaceOrientationLandscapeLeft;
}

回答1:

If you are pushing a view controller to a stack of other view controllers in a navigation controller, requiring landscape only will not work well. You should display the landscape-constraint view controller modally.

See my answer here for an example project: https://stackoverflow.com/a/16022631/983912

回答2:

For a navigation controller interface, forcing an orientation is not supported by the framework. See my answer here: https://stackoverflow.com/a/15301322/341994

For a workaround (not very good), see my answer here: https://stackoverflow.com/a/16379515/341994

However, forcing an orientation works fine for a presented view controller.