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Overview. Tab bar controllers are implemented by the UITabBarController class. They allow a user of to switch between multiple arbitrary view controllers by maintaining an array of UIViewControllers .
To add a tab, first drag a new View Controller object to the storybard. Next control-drag from the tab bar controller to new view controller and select view controllers under Relationship Segue . Your tab bar controller will update with a new tab.
Use the selectedIndex property on the UITabBarController. More information can be found in the UITabBarController Class Reference.
controller.selectedIndex = 4;
or use
[controller setSelectedIndex:4];
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