如何将标签栏控制器中的数据传递到其中一个选项卡？ [英] How do I pass data from a tab bar controller to one of its tabs?

问题描述

我在故事板中设置了UITabBarController。我想从选项卡栏控制器传递一个数据字典，以便在相应的子选项卡中使用，这是一个标准的UIViewController。

I have a UITabBarController set up in storyboard. I want to pass a dictionary of data from the tab bar controller for use in the appropriate child tab, which is a standard UIViewController.

这似乎是一个很长的问题要回答，但我真的不知道从哪里开始。我正在寻找最简单的方法。我必须以编程方式使标签功能化吗？我也非常感谢指向任何有用的开发者文档。

This seems like a long questions to answer, but I really don't know where to start. I'm looking for the easiest way through this. Must I make the tabs function programmatically? Pointing me towards any useful developer documentation would also be much appreciated.

-Austin

p.s.我是新手，到目前为止依赖故事板进行视图控制器转换

-Austin
p.s. i'm new and have so far depended on storyboard for viewcontroller transitions

推荐答案

花了几天时间，但我发现了简单解决方案在我的TabBarController的viewDidLoad方法，我可以访问，并设置使用

It took a couple of days, but I discovered a simple solution. In my TabBarController's viewDidLoad method, I can access and set attributes of my the tabbed subviews using

    [[self viewControllers] objectAtIndex:0]

或您希望访问的任何索引。

or whatever index you wish to access.

保存它作为我的tab1_viewController的一个实例给了我一个指向该对象的指针，我可以从中获取并设置我的属性值。这最初不清楚，因为storyboard为我创建了tab_viewController对象。我没有机会按照我想要的方式初始化它们！

Saving that as an instance of my tab1_viewController gives me a pointer to the object, from which I can get and set my property values. This was initially unclear because storyboard created the tab_viewController objects for me. I never had a chance to initialize them the way I wanted to!

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