Uinavigation Controller的视图控制器的混合方向

Question

我有一个应用程序 UITabBarController 作为基础控制器 UINavigationController 对于两个标签。 TAB的主视图控制器都支持肖像和景观取向，但孙子视图仅在景观中。

我遇到的问题是，如果您在进入孙子视图之前从肖像开始，孙子的视野仍在肖像中显示 ChildViewController's shouldAutorotateToInterfaceOrientation 仅针对景观模式返回。也就是说，导航栏朝向设备的顶部，就好像它处于肖像模式一样，而新的视图控制器并未旋转到强制方向。看起来像这样：

| [Navigation bar] |
|                  |
|  View contents   |
|                  |
|                  |
|                  |

而不是正确的面向布局：

|  [Navigation bar]               |
|                                 |
|   View contents, rotated        |

如何确保在正确的方向上显示孙子的视图？这是我设置所有内容的方式：

// first creating one of two view controllers used for the tabbar

UINavigationController *firstNavController = [[UINavigationController alloc] init];    

ContentOneListController *listController = [[[ContentOneListController alloc] initWithNibName:@"ContentOneView"                                                                                    bundle:nil] autorelease];    
listController.tabBarItem.title = @"One";

firstNavController.viewControllers = [NSArray arrayWithObject:listController];

// view controllers are added to the tabbar controller here (ivar of the class)
tabBarController = [[UITabBarController alloc] init];   
tabBarController.viewControllers = [NSArray arrayWithObjects:
        firstNavController, secondNavController, nil];

[window addSubview:tabBarController.view];
[window makeKeyAndVisible];

// later on, I add a child view controller onto ContentOneListController

NSArray *viewControllers = tabBarController.viewControllers;
NSInteger selectedIndex = [tabBarController selectedIndex]; 
UINavigationController *selectedNavController = [viewControllers objectAtIndex:selectedIndex];  

// ChildViewController only supports landscape orientation
ChildViewController *childController = [[[ChildViewController alloc] initWithNibName:@"ChildView"                                                                                      bundle:nil] autorelease];

[selectedNavController pushViewController:controller animated:NO];

ContentOneListController's shouldAutorotateToInterfaceOrientation 返回是的，以支持肖像和景观取向 ChildViewController's shouldAutorotateToInterfaceOrientation 归还是仅出于景观取向：

-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)orientation 
{
    return (orientation == UIInterfaceOrientationLandscapeLeft ||
            orientation == UIInterfaceOrientationLandscapeRight);
}

Answer 1

解决此问题的方法是通过调整视图变换，如此问题所建议：

有没有记录的设置iPhone方向的方法？

Answer 2

我写了一个扩展程序，可以准确地完成您需要的事情： https://github.com/piercifani/tabbarbetterterrotation

Answer 3

子类 UITabBarController 并实施 shouldAutorotateToInterfaceOrientation 为了它