是否可以从选项卡访问常规UITabBarController属性? [英] Access to General UITabBarController properties from it's tabs?

问题描述

我将描述我想做什么. 我有登录页面(ViewController).

I'll describe what I want to do. I have Login page(ViewController).

登录后，我进入UITabBarController-MainTabBar.m. 此MainTabBar具有'key'属性，可从登录页面获取用户密钥.

After I login I pass to UITabBarController - MainTabBar.m. This MainTabBar has 'key' property, which gets the user key from the login page.

UITabBarController具有2个标签-Tab1.m，Tab2.m.

The UITabBarController has 2 tabs - Tab1.m, Tab2.m.

我想从每个选项卡访问MainTabBar属性.

I want to access the MainTabBar propery from each tab.

我该怎么做?

谢谢！

推荐答案

假定Tab1和Tab2是UIViewController子类，则可以按以下方式访问Tab1.m或Tab2.m中的key属性:

Assuming that Tab1 and Tab2 are UIViewController subclasses you can access the key property in either Tab1.m or Tab2.m as:

#import MainTabBar.h
//...//

// Getting the parent TabBarController
MainTabBar *parentTabBarController = (MainTabBar *)self.tabBarController;

// Getting the key property from the parent TabBarController
NSString *theUserKey = parentTabBarController.key;

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