使用情节提要时如何继承导航控制器?

How to subclass Navigation Controller when using storyboards?(使用情节提要时如何继承导航控制器?)

问题描述

我正在使用 Xcode 菜单编辑器...嵌入...导航控制器"在界面构建器中使用情节提要.

I'm using storyboards in interface builder using the Xcode menu 'Editor...Embed in...Navigation Controller'.

似乎在 iOS 6 中，您必须将 UINavigationController 子类化以允许所有方向，使用

It seems that in iOS 6 you have to subclass the UINavigationController to allow all orientations, with

- (NSUInteger)supportedInterfaceOrientations {
    return (UIInterfaceOrientationMaskAll   );
}

但是由于代码中没有对 UINavigationController 的引用，如何将 UINavigationController 子类化为情节提要应用程序?

But how do I subclass the UINavigationController with a storyboard app as there is no reference to it in the code?

推荐答案

可以从storyboard中选择导航控制器场景的导航控制器:

You can select the navigation controller scene's navigation controller from the storyboard:

然后使用右侧的身份检查器更改类:

And then use the identity inspector on the right to change the class:

例如，将类"更改为 MyCustomNavigationController，然后在您的项目中创建一个名为 MyCustomNavigationController 的新类:

For instance change the "Class" there to MyCustomNavigationController and then just create a new class in your project called MyCustomNavigationController:

MyCustomNavigationController.h:

#import <UIKit/UIKit.h>

@interface MyCustomNavigationController : UINavigationController
@end

MyCustomNavigationController.m:

@implementation MyCustomNavigationController

- (NSUInteger)supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskAll;
}

... any other methods you want ...

@end

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