Change ViewController for a TabBarItem

问题

Is it possible to change/replace ViewContoller (and View) for one of the Tabs in a UITabBarController?

I would like to switch between 3 different ViewControllers in any order from a specific Tab (that´s why NavigationController is not possible).

回答1:

They are set (in mass) using setViewControllers:animated: so you could do something like this.

// Assume tabController is the tab controller 
// and newVC is the controller you want to be the new view controller at index 0
NSMutableArray *newControllers = [NSMutableArray arrayWithArray:tabController.viewControllers];
[newControllers replaceObjectAtIndex:0 withObject:newVC];
[tabController setViewControllers:newControllers animated:YES];

Hope that helps.

来源：https://stackoverflow.com/questions/5303787/change-viewcontroller-for-a-tabbaritem