問題描述

我有一個 UIViewController 詳細視圖，它是從 UINavigationController 中的 UITableView 推送的.在 UIViewController 我添加了一些子視圖(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，如果我的圖片視圖被放大，我使用此代碼停止自動旋轉:

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;
}

}

我正在嘗試在 iOS6 下使用:

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

- (BOOL)shouldAutorotate {
return FALSE;
}

然而，這個方法永遠不會被調用，并且應用會繼續旋轉.

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

誰能幫忙?

推薦答案

如果您有管理這些視圖的導航控制器，則不會調用 shouldAutorotate 方法.您必須繼承 UINavigationController 并覆蓋方法 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.

來自文檔:

現在，iOS 容器(例如 UINavigationController)不會咨詢它們的子容器來確定它們是否應該自動旋轉

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

編輯-----

正如 Lomax 下面提到的，Apple 不鼓勵子類化 UINavigationController.您應該嘗試一個類別(this SO question解釋得很好):

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

這篇關于iOS6 中未調用 shouldAutoRotate 方法的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！