Switch tab bar programmatically in Swift

Question

I have a tab bar application and i have a button on my first view which i want to when pressed switch to my second tab programmatically in the tab bar.

I can't quite seem to figure it out how to get the index etc to switch to it i've tried stuff like this.

tababarController.selectedIndex = 1

With no success.

Leo Dabus · Accepted Answer · 2018-12-01T19:21:37.360

118

Thats pretty simple tabBarController is declared as an optional type

var tabBarController: UITabBarController? { get }

The nearest ancestor in the view controller hierarchy that is a tab bar controller. If the view controller or one of its ancestors is a child of a tab bar controller, this property contains the owning tab bar controller. This property is nil if the view controller is not embedded inside a tab bar controller.

So you just need to add "?" at the end of it:

@IBAction func goToSecond(_ sender: Any) {
    tabBarController?.selectedIndex = 1
}

edited Dec 01 '18 at 19:21

answered Jan 22 '15 at 21:51

Leo Dabus

229,809
59
489
571

Is there a way to make it so that the tab slides instead of just changing abruptly? – user3916570 Oct 14 '15 at 15:29
@vinbhai4u sorry about the long feedback response. I just saw your comment now :(. if you are subclassing UITabBarController you just need to set the selectedIndex `selectedIndex = 1` – Leo Dabus Nov 12 '17 at 15:53

score 15 · Answer 2 · edited Mar 27 '20 at 08:15

15

Swift 3:

func switchToDataTab() {
    Timer.scheduledTimer(timeInterval: 0.2, target: self, selector: #selector(switchToDataTabCont), userInfo: nil, repeats: false)
}

func switchToDataTabCont(){
    tabBarController!.selectedIndex = 0
}

Swift 4+:

func switchToDataTab() {
    Timer.scheduledTimer(timeInterval: 0.2, target: self, selector: #selector(switchToDataTabCont), userInfo: nil, repeats: false)
}

@objc func switchToDataTabCont(){
    tabBarController!.selectedIndex = 0
}

edited Mar 27 '20 at 08:15

pkamb

33,281
23
160
191

answered Dec 08 '16 at 22:48

Darryl Lopez

151
1
3

This is the simple idea but its really works great, when sometimes click the same TabViewController screen.. Thank you so much guys.. – Hari Narayanan Sep 18 '21 at 19:25

score 7 · Answer 3 · answered Jun 13 '15 at 21:59

7

The solution provided by Leo Dabus (see above) works fine for me. However - some controls have bad states. Can't fix that, but this little workaround will do you all good:

func switchToDataTab(){
    NSTimer.scheduledTimerWithTimeInterval(0.2,
        target: self,
        selector: "switchToDataTabCont",
        userInfo: nil,
        repeats: false)
}

func switchToDataTabCont(){
    tabBarController!.selectedIndex = 0
}

answered Jun 13 '15 at 21:59

Anthony Akentiev

1,001
11
9

I actually got very similar issue. The `UITableView` state was not changed, even the `tableView.reloadData()` was called. Tx for providing the workaround! Do you probably came into reasoning behind it or a nicer solution? – Marcin Świerczyński Dec 29 '15 at 14:27
Swift 5.0 wants Timer. – TM Lynch Oct 28 '19 at 18:40

score 2 · Answer 4 · answered Jun 18 '16 at 06:26

Add to Anthony's code:

func switchToDataTab(){
    NSTimer.scheduledTimerWithTimeInterval(0.2, target: self, selector: #selector(switchToDataTabCont), userInfo: nil,repeats: false)
}

func switchToDataTabCont(){
    tabBarController!.selectedIndex = 0
}

Where the selector class has been changed to

#selector(switchToDataTabCont)

Switch tab bar programmatically in Swift

4 Answers4

Linked