如何迭代应用程序上的所有UIViewControllers [英] How to iterate all the UIViewControllers on the app

问题描述

我有一个这种结构的xib：

I have a xib with this structure:

- Tab Bar Controller
-- Tab Bar
-- NavigationController
--- Navigation Bar
--- News List View Controller
---- Navigation Item
--- Tab Bar Item

-- NavigationController
--- Navigation Bar
--- News List View Controller
---- Navigation Item
--- Tab Bar Item
-- NavigationController
--- Navigation Bar
--- News List View Controller
---- Navigation Item
--- Tab Bar Item
[...]

如何编写循环以在每次迭代中获取每个UIViewController（新闻列表视图控制器）？

How can I code a loop to take each UIViewController (News List View Controller) in each iteration?

推荐答案

像这样以代码方式访问它们：

Access them codewise like this:

NSArray * controllerArray = [[self navigationController] viewControllers];

for (UIViewController *controller in controllerArray){
   //Code here.. e.g. print their titles to see the array setup;
   NSLog(@"%@",controller.title);
}

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