Programmatically switching between tabs within Swift

Question

I need write some code to switch the view to another tab when the iOS app starts (so, for example, the second tab is shown by default rather than the first).

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Answer 1

1.Create a new class which supers UITabBarController. E.g:

class xxx: UITabBarController {
override func viewDidLoad() {
        super.viewDidLoad()
}

2.Add the following code to the function viewDidLoad():

self.selectedIndex = 1; //set the tab index you want to show here, start from 0

3.Go to storyboard, and set the Custom Class of your Tab Bar Controller to this new class. (MyVotes1 as the example in the pic)

Answer 2

Swift 3

You can add this code to the default view controller (index 0) in your tabBarController:

    override func viewWillAppear(_ animated: Bool) {
        _ = self.tabBarController?.selectedIndex = 1
    }

Upon load, this would automatically move the tab to the second item in the list, but also allow the user to manually go back to that view at any time.