在AppDelegate iOS中自定义标签栏

Question

I am trying to customize the Tab Bar in the AppDelegate.m . I found code online to declare the Tab Bar like this:

// Assign tab bar item with titles

UITabBarController *tabBarController = (UITabBarController *)self.window.rootViewController;

This makes sense if the Tab bar is the root view controller, but it isn't. I get a crash because an Unrecognized selector sent to instance... This makes sense, because the tab bar isnt loaded until I pass the Login View Controller.

How can I style the tab bar in the AppDelegate?

Answer 1

如果Login View Controller是rootViewController ，则有充分的理由在您展示它之前在Login View Controller中配置UITabBarController 。