CODEWITHSUNDEEP
swiftuitabbarcontroller
noxo.
noxo.

Reputation: 126

Find which tab bar item is selected

I'm looking for a way to find which tab bar item is select on my tab bar controller.

I've got 5 items and for one of them, I would like to show a "registration view" if the user is not logged in.

I've got all my verifications but I don't find the good way to check if the user tapped the fourth item on my tab bar.

Any ideas ? Thanks

self.tabBarController?.delegate = UIApplication.shared.delegate as? UITabBarControllerDelegate

        func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool {
            if viewController is CalculatorViewController {
                print("Redirect to register view")
            }

            return true
        }

Upvotes: 3

Views: 1783

Answers (2)

Pete Streem
Pete Streem

Reputation: 390

You can try to use such thing (if you are using navigation controller, for sure)

override func viewDidLoad() {
    super.viewDidLoad()

    if let index = self.tabBarController?.selectedIndex, index == 3 {
         // do things here
    }

}

UPD. Or even like so

override func viewDidLoad() {
    super.viewDidLoad()

    if !userLogedIn {
         self.tabBarController?.selectedIndex = index // index is your tab bar item with login view
    }

}

Upvotes: 1

Umair
Umair

Reputation: 1253

 func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool {
        guard let index = tabBarController.viewControllers?.firstIndex(where: {$0 === viewController}) else {
            return false
        }

        if index == 3 && !IS_LOGGED_IN{
            /*** show registration ***/
            return false //if you want to disable transition to the associated viewController against that tab
        }
        return true
 }

Upvotes: 0

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