Question

怎么强制UIViewController从竖屏进入横屏

Answer 1

没地方放压缩包，我就在这里写个简单吧，2个UIViewController，你自己新建一个工程就加两按钮就可以测试。
核心需要添加的方法如下：
1,PortraitViewController 不旋转，保持竖屏//iOS 5- (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation{return (toInterfaceOrientation == UIInterfaceOrientationPortrait);}//iOS 6- (BOOL)shouldAutorotate{return NO;}- (NSUInteger)supportedInterfaceOrientations{return UIInterfaceOrientationMaskPortrait;}- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation{return UIInterfaceOrientationPortrait;}LandscapeViewController 始终保持横屏//iOS 5- (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation{return (toInterfaceOrientation == self.preferredInterfaceOrientationForPresentation);}//iOS 6- (BOOL) shouldAutorotate{return YES;}- (NSUInteger)supportedInterfaceOrientations{return UIInterfaceOrientationMaskLandscapeRight;}- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation{return UIInterfaceOrient罚互窜就诃脚撮协郸茅ationLandscapeRight;}