UINavigationController 中的 ViewController 方向更改 [英] ViewController in UINavigationController orientation change

问题描述

所以我有以下层次结构:

So I have the following hierarchy:

UINavigationController --> RootViewController (UIViewController) --> UITableViewController --> DetailViewController (UIViewController)

UINavigationController --> RootViewController (UIViewController) --> UITableViewController --> DetailViewController (UIViewController)

我想将 RootViewController 上的方向锁定为仅纵向，但保留其余视图控制器的所有方向.

I want to lock the orientation on RootViewController to Portrait only, but leave all orientations for the rest view controllers.

如果我把它放到子类 UINavigationController:

If I put this to subclassed UINavigationController:

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

-(NSUInteger)supportedInterfaceOrientations{
    return UIInterfaceOrientationMaskPortrait;
}

然后所有视图控制器都被锁定为纵向.

All view controllers are then locked to portrait.

我的问题是，有没有办法只将 RootViewController 锁定为 Portrait，而将所有选项留给其他视图控制器?

My question is, is there a way to lock only RootViewController to Portrait, but leave all options for other view controllers?

推荐答案

查看此处的链接以修复 iOS 6 中的自动旋转并根据视图设置方向支持:http://www.disalvotech.com/blog/app-development/iphone/ios-6-rotation-solution/

check the link here for fixing autorotation in iOS 6 and set orientation support per view basis: http://www.disalvotech.com/blog/app-development/iphone/ios-6-rotation-solution/

你可以这样做:

1. 在您的 .m 文件中创建一个自定义导航控制器，它是 UINavigationController 的子类:

 - (BOOL)shouldAutorotate
 {
      return self.topViewController.shouldAutorotate;
 }
 - (NSUInteger)supportedInterfaceOrientations
 {
      return self.topViewController.supportedInterfaceOrientations;
 }

在你的 AppDelegate.h,

  @interface AppDelegate : UIResponder <UIApplicationDelegate> {

      UINavigationController *navigationController;
      ViewController *viewController;
  }

  @property (strong, nonatomic) UIWindow *window;
  @property (strong, nonatomic) ViewController *viewController;

在AppDelegate.m中，

  - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
  {
        // set initial view
       self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

       viewController = [[ViewController alloc] initWithNibName:@"RootViewController" bundle:nil];

       navigationController = [[CustomNavigationController alloc]
                    initWithRootViewController:viewController]; // iOS 6 autorotation fix
       [navigationController setNavigationBarHidden:YES animated:NO];

        self.window = [[UIWindow alloc]
           initWithFrame:[[UIScreen mainScreen] bounds]];

        [self.window setRootViewController:navigationController]; // iOS 6 autorotation fix
        //[self.window addSubview:navigationController.view];

        [self.window makeKeyAndVisible];


         return YES;
  }


  - (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window  // iOS 6 autorotation fix
  {
          return UIInterfaceOrientationMaskAll;

  }

在您的 rootViewController 中，无论事件推送第二个视图控制器，请执行以下操作:

in your rootViewController, for whatever the event push the second view controller, do this:

  - (IBAction)pushSecondViewController:(id)sender {

    // push second view controller
    SecondViewController *secondViewController = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil];
    [self.navigationController pushViewController:secondViewController animated:YES];
   }

在每个视图控制器中，添加

in your each view controller, add

   - (BOOL)shouldAutorotate{}
   - (NSUInteger)supportedInterfaceOrientations{}

对于 iOS 6，您可以单独设置每个视图控制器所需的方向支持.

for iOS 6, you can set each view controller whatever the orientation support you want individually.

对于iOS 5及以下，可以设置

for iOS 5 and below, you can set

   - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation{}

所有功劳归于在链接中编写示例应用的 John DiSalvo.

All the credits goes to John DiSalvo who wrote the sample app in the link.

希望这会有所帮助.

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