Make UIViewController be in iOS7 landscape mode

I implemented the correct functions, but they do not work? I tried several solutions here on StackOverFlow, but none of them work. I tried to add a view to the UINavigationController, also not working.

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;
}