Referencing Parent in Cocoa

Question

My question is about how to access the TabBarController from within one of its viewControllers.

Imagine a mainClass.m that adds tabBarController which has two viewControllers - viewController1 and viewController2.

In viewController1.m there is a game. When the game is over, viewController1.m wants to tell tabBarController to display viewController2, but viewController1 has no reference to tabBarController. How do I reference the viewController's parent?

How does one change tabBarItems from within the code for the current view?

Answer 1

Via the tabBarController property of your view controller.

[ self.tabBarController setViewControllers: viewController2 animated: YES ];

Where "self" is viewController1

tabController property of viewControllers

setViewControllers:animated: method of UITabBarController

Also, technically, the tabBarController is not any view controller's parent. To say it that way is confusing how inheritance works in Objective-C. Your view controller's super class, or parent, is UIViewController.