iOS 6 - 某些视图的导航控制器横向旋转，而其他视图仅限 [英] iOS 6 - Navigation Controller Landscape Rotations For Some Views While Others Portrait Only

问题描述

我正在构建一个仅适用于主要视图的应用程序（正常和颠倒）。
我在项目设置/ Plist中设置了此设置，一切正常。
但是，我有一些模态视图可以显示图像/视频，我希望它们可以旋转到所有方向。

I am building an app that will be Portrait only for the main views (Both normal and upside down). I have set this setting in the Project Settings/Plist and all works fine. However, I have a few modal views that do things like display images/videos, and I want them to be able to rotate to ALL orientations.

I尝试为UINavigationController添加一个类别，但没有运气。
我还在viewController中添加了以下代码调用模态：

I tried adding a category for UINavigationController but no luck. I have also added to the viewController that calls the modal the below code:

-(BOOL)shouldAutomaticallyForwardAppearanceMethods{
    return NO;
}
-(BOOL)shouldAutomaticallyForwardRotationMethods{
    return NO;
}

我已将以下代码添加到我希望允许所有的模态viewControllers中方向：

I have added the below code to the modal viewControllers that I want to allow all orientations:

- (BOOL)shouldAutorotate {
    return YES;
}

- (NSUInteger)supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskAll;
}

我缺少什么？有什么建议？

What am I missing? Any suggestions?

推荐答案

在iOS 6上，旋转处理已经改变。对于您描述的问题，有几种方法。首先，在plist中，启用除肖像上下颠倒的所有方向。

On iOS 6, rotation handling has changed. For the problem you described, there are several approaches. First, in the plist, enable all orientations except portrait upside down.

然后您可以使用以下解决方案之一：

Then you could use one of the following solutions:

1. 使用UINavigationController的子类，它只允许旋转为纵向。


2. 对于所有控制器，指定它们支持的旋转。



3. 您可以覆盖应用程序委托中的方法。当方向更改或按下新视图控制器时，您的代理会调用该方法，您可以使用它暂时启用/禁用应用程序的横向显示：

1. Use a subclass of UINavigationController that does only allow rotation to portrait.
2. For all controllers specify which rotations they support.

3. You can override a method in your application delegate. As that method is called on your delegate whenever the orientation changes or a new view controller is pushed, you can use it to temporarily enable/disable landscape display for your app:

// In AppDelegate.h:
@property (nonatomic) BOOL portraitOnly;

// In AppDelegate.m:
- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
{
    return _portraitOnly ? UIInterfaceOrientationMaskPortrait : UIInterfaceOrientationMaskAllButUpsideDown;
}

// to switch to portrait only:
((AppDelegate *)[UIApplication sharedApplication].delegate).portraitOnly = YES;

// to switch to allowing landscape orientations:
((AppDelegate *)[UIApplication sharedApplication].delegate).portraitOnly = NO;

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