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I want to ask a question about the iPhone application.
In my program, I create the UITabBarController with 4 tabs. The 4 tabs display different information and have some connection. When I do something in the tab 4, it will update some data which display in tab 1. However, the page is the same if I add the element in the viewDidLoad function.
My problem is, how to load the data every time when the user press the tab? do I need to move the code to somewhere?
[UIViewController viewWillAppear:] is exactly what you’re looking for.