How do I set selected tab in UITabBarController using StoryBoard?

Question

How can I switch to some tab in UITabBarController using StoryBoard? I have tried the code below but without success (the tab is not selected):

Answer 1

Swift 5.3

Let tabBar be an instance of UITabBarController then :

tabBar.selectedViewController = tabBar.viewControllers![2]

Note:
Instead of 2, put your desired viewController's index

Answer 2

Here is what I do (Swift 5.x):

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        if let tabBarController = self.window?.rootViewController as? UITabBarController {
            if let viewControllers: [UIViewController] = tabBarController.viewControllers {
                tabBarController.selectedIndex = viewControllers.count-1
            }
        }
        return true
    }

Answer 3

Grab your instance of UITabBarController then set the selectedViewController property:

yourTabBarController.selectedViewController=[yourTabBarController.viewControllers objectAtIndex:3];//or whichever index you want

Answer 4

Swift 4.1

In your TabBarViewController class, you can add this key line

self.selectedIndex = 0