iOS6 中未调用 shouldAutoRotate 方法

问题描述

我有一个 UIViewController 详细视图，它是从 UINavigationController 中的 UITableView 推送的.在 UIViewController 我添加了一些子视图(例如 UITextView、UIImageView).

I have a UIViewController detail view which is pushed from a UITableView in a UINavigationController. In the UIViewController I add a number of subviews (e.g a UITextView, UIImageView).

在 iOS5 中，如果我的图片视图被放大，我使用此代码停止自动旋转:

In iOS5 I used this code to stop autorotation if my picture view was enlarged :

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
if (scrollView.isZoomed) {
    return NO;
}
else {
    return YES;
}

}

我正在尝试在 iOS6 下使用:

I am trying to achieve the same thing under iOS6 using :

- (BOOL)shouldAutorotate {
return FALSE;
}

然而，这个方法永远不会被调用，并且应用会继续旋转.

However this method is never called and the app continues rotating.

谁能帮忙?

推荐答案

如果您有管理这些视图的导航控制器，则不会调用 shouldAutorotate 方法.您必须继承 UINavigationController 并覆盖方法 shouldAutorotate 和 supportedIntervalOrientations.

If you have a Navigation Controller managing these views, the shouldAutorotate method won't be called. You would have to subclass UINavigationController and override methods shouldAutorotate and supportedIntervalOrientations.

来自文档:

现在，iOS 容器(例如 UINavigationController)不会咨询它们的子容器来确定它们是否应该自动旋转

Now, iOS containers (such as UINavigationController) do not consult their children to determine whether they should autorotate

编辑-----

正如 Lomax 下面提到的，Apple 不鼓励子类化 UINavigationController.您应该尝试一个类别(this SO question解释得很好):

As mentioned below by Lomax, subclassing UINavigationController is discouraged by Apple. You should try a category instead (this SO question explains it well):

@implementation UINavigationController 
-(BOOL)shouldAutorotate
{
    // your code
}

-(NSUInteger)supportedInterfaceOrientations
{
    (...)
}

@end

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