iOS 6轮换：supportedInterfaceOrientations不起作用？

9 回答

• 8

  如果您的ViewController是UINavigationController或UITabBarController的子级，那么它就是您的问题的父级 . 您可能需要子类化该父视图控制器，只是覆盖您在问题中显示的那些InterfaceOrientation方法

  编辑：

  仅限肖像TabBarController的示例

  @interface MyTabBarController : UITabBarController
              {
              }
              @end
  
              @implementation MyTabBarController
  
              // put your shouldAutorotateToInterfaceOrientation and other overrides here        
              - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
                  return (interfaceOrientation == UIInterfaceOrientationPortrait);
              }
  
              - (NSUInteger)supportedInterfaceOrientations{ 
                  return UIInterfaceOrientationMaskPortrait; 
              } 
  
          @end
  

  回复于 2024-05-06T20:47:42+08:00
• 0

  除了上面的CSmith的答案之外，UINavigationController子类中的以下代码允许以我期望它首先工作的方式委托给顶视图控制器：

  - (BOOL)shouldAutorotate;
  {
      return YES;
  }
  
  - (NSUInteger)supportedInterfaceOrientations
  {
      if ([[self topViewController] respondsToSelector:@selector(supportedInterfaceOrientations)])
          return [[self topViewController] supportedInterfaceOrientations];
      else
          return [super supportedInterfaceOrientations];
  }
  

  回复于 2024-05-06T20:47:42+08:00
• 2

  这是CSmith方法的另一种替代方案 .

  如果要复制导航堆栈/选项卡栏中的所有视图必须就允许的方向集达成一致的iOS 6之前的行为，请将其放在 UITabBarController 或 UINavigationController 的子类中：

  - (NSUInteger)supportedInterfaceOrientations
  {
      NSUInteger orientations = [super supportedInterfaceOrientations];
  
      for (UIViewController *controller in self.viewControllers)
          orientations = orientations & [controller supportedInterfaceOrientations];
  
      return orientations;
  }
  

  回复于 2024-05-06T20:47:42+08:00
• 0

  尝试添加此类别：

  @interface UINavigationController(InterfaceOrientation)
  
  @end
  
  @implementation UINavigationController(InterfaceOrientation)
  
  - (NSUInteger) supportedInterfaceOrientations {
      if (self.viewControllers.count > 0)
          return [[self.viewControllers objectAtIndex:0] supportedInterfaceOrientations];
      else
          return UIInterfaceOrientationMaskAll;
  }
  
  @end
  

  回复于 2024-05-06T20:47:42+08:00
• -1

  对于使用UINavigationController和Swift的人，您可以将此扩展添加到项目中 . 之后，导航控制器将控件委托给其子控制器 .

  extension UINavigationController {
      override public func supportedInterfaceOrientations()
      -> UIInterfaceOrientationMask {
          if let ctrl = topViewController {
              return ctrl.supportedInterfaceOrientations()
          }
          return super.supportedInterfaceOrientations()
      }
  
      override public func shouldAutorotate() -> Bool {
          if let ctrl = topViewController {
              return ctrl.shouldAutorotate()
          }
          return super.shouldAutorotate()
      }
  }
  

  回复于 2024-05-06T20:47:42+08:00
• -2

  @CSmith和@EvanSchoenberg的进一步补充 .

  如果您有一些旋转的视图，而某些视图没有旋转，您必须创建 UITabBarController 的自定义实例，但仍然让每个 UIViewController 决定 .

  - (BOOL)shouldAutorotate;
  {
      return YES;
  }
  
  - (NSUInteger)supportedInterfaceOrientations
  {
      UIViewController * top;
      UIViewController * tab = self.selectedViewController;
      if([tab isKindOfClass:
          ([UINavigationController class])]) {
          top = [((UINavigationController *)tab)
                   topViewController];
      }
  
      if ([top respondsToSelector:@selector(supportedInterfaceOrientations)])
          return [top supportedInterfaceOrientations];
      else
          return [super supportedInterfaceOrientations];
  }
  

  回复于 2024-05-06T20:47:42+08:00
• 1

  @ Alvivi的答案更新为 Swift 4 .

  extension UINavigationController {
  
      // Look for the supportedInterfaceOrientations of the topViewController
      // Otherwise, viewController will rotate irrespective of the value returned by the ViewController
      override open var supportedInterfaceOrientations: UIInterfaceOrientationMask {
          if let ctrl = self.topViewController {
              return ctrl.supportedInterfaceOrientations
          }
          return super.supportedInterfaceOrientations
      }
  
      // Look for the shouldAutorotate of the topViewController
      // Otherwise, viewController will rotate irrespective of the value returned by the ViewController
      override open var shouldAutorotate: Bool {
          if let ctrl = self.topViewController {
              return ctrl.shouldAutorotate
          }
          return super.shouldAutorotate
      }
  }
  

  回复于 2024-05-06T20:47:42+08:00
• 31

  @Shimanski Artem的答案很好，但我认为使用最顶层（当前可见）控制器是更好的解决方案：

  @interface UINavigationController(InterfaceOrientation)
  
  @end
  
  @implementation UINavigationController(InterfaceOrientation)
  
  - (NSUInteger) supportedInterfaceOrientations {
      if (self.viewControllers.count > 0){
          return [[self.viewControllers objectAtIndex:[self.viewControllers count] - 1] supportedInterfaceOrientations];
      }
      return UIInterfaceOrientationMaskAll;
  }
  
  @end
  

  回复于 2024-05-06T20:47:42+08:00
• 27

  作为备用选项，如果您想在应用中保留iOS6之前的旋转功能：

  这是github上的一些有用的代码，可以调用iOS6的方法调用，以便旋转像在iOS4 / iOS4上一样 . 这真的对我有所帮助，因为我正在支持一个真正微观管理轮换的遗留应用程序 . 实现iOS6所需的更改需要做很多工作 . 感谢发布它的用户 .

  https://gist.github.com/3725118

  回复于 2024-05-06T20:47:42+08:00