强制横屏

 说明：目前在ios7，ios8上验证有效，注意该UIViewController不能添加到UINavigationController，只能presentViewController方式添加。

 

- (BOOL)shouldAutorotate
{

    return NO;

}

 

- (NSUInteger)supportedInterfaceOrientations

{

    // 强制横屏

    return UIInterfaceOrientationMaskLandscapeRight;

}

 

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation

{

    // 强制横屏

    return UIInterfaceOrientationLandscapeRight;

}