在iOS5.1 和 以前的版本中, 咱们一般利用 shouldAutorotateToInterfaceOrientation: 来单独控制某个UIViewController的旋屏方向支持,好比:app
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return (interfaceOrientation == UIInterfaceOrientationPortrait); }
可是在iOS6中,这个方法被废弃了,使用无效。ide
shouldAutorotateToInterfaceOrientation:spa
Returns a Boolean value indicating whether the view controller supports the specified orientation. (Deprecated in iOS 6.0. Override the supportedInterfaceOrientations andpreferredInterfaceOrientationForPresentation methods instead.)code
实践后会发现,经过supportedInterfaceOrientations的单独控制是没法锁定屏幕的。ci
-(NSUInteger)supportedInterfaceOrientations { return UIInterfaceOrientationMaskPortrait; }
屡次实验后总结出控制屏幕旋转支持方向的方法以下:it
子类化UINavigationController,增长方法io
- (BOOL)shouldAutorotate { return self.topViewController.shouldAutorotate; } - (NSUInteger)supportedInterfaceOrientations { return self.topViewController.supportedInterfaceOrientations; }
而且设定其为程序入口,或指定为 self.window.rootViewControllerclass
随后添加本身的view controller,若是想禁止某个view controller的旋屏:(支持所有版本的控制)程序
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return (interfaceOrientation == UIInterfaceOrientationPortrait); } -(BOOL)shouldAutorotate { return NO; } -(NSUInteger)supportedInterfaceOrientations { return UIInterfaceOrientationMaskPortrait; }
若是想又开启某个view controller的所有方向旋屏支持:方法
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); } -(NSUInteger)supportedInterfaceOrientations { return UIInterfaceOrientationMaskAllButUpsideDown; } -(BOOL)shouldAutorotate { return YES; }
从而实现了对每一个view controller的单独控制。
顺便提一下,若是整个应用全部view controller都不支持旋屏,那么干脆:
- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window { return UIInterfaceOrientationMaskPortrait; }