How to arrange tabbar item at run time in TabBarcontroller?

Question

I have TabBarcontroller with 5 viewcontroller "A", "B", "C", "D", "E". But i need to decide the order at runtime depends on API response. for ex. some time I need to show "A", "D", "C", "E", "B" i.e. in random order, OR sometime i need to show only for "D", "B", "C","A"

is there any way to deal with this scenario?

I am working with Swift 3, but even if i get some logic or possible way it can be helpful to solve my issue.

I have created TabBar and viewcontroller using storyboard.

How do you create the tab bar controller and its view controllers? — rmaddy, Dec 14 '16 at 06:19
The question is nice, but this shouldn't be done, because people have muscle memory and your feature will mess up with that. — Nikhil Manapure, Dec 14 '16 at 06:28
@NikhilManapure You are right, but we have some feature..Agree with you but can we remove and add random tabbaritems in same order in runtime — New iOS Dev, Dec 14 '16 at 06:52
@sss It is might possible but you need to create Tabbar programmatically instead of using storyboard. — Nirav D, Dec 14 '16 at 06:58

score 1 · Accepted Answer · answered Dec 14 '16 at 07:11

if  let tabBarController = ( self.window?.rootViewController as? UITabBarController ) {
    if var vcArray = tabBarController.viewControllers {
        //Arrange the array according to your need and set them again.
        tabBarController.viewControllers = vcArray
        //Arrange the array according to your need and set them again.
        var items =   tabBarController.tabBar.items
        tabBarController.tabBar.items = items
    }
}

You will have to handle selectedViewController. I have written above code in appdelegate but you can get appDelegate's object and use as self in above code.

Also look at this for another solution where you can create tabCtrl programmatically and manipulate it.

score 0 · Answer 2 · answered Dec 14 '16 at 06:25

0

You have not included code, so it is a little hard to response.

What I would do is, as soon as you have the new order, create a new TabBarController and let that new one overwrite the existing one.

To make this for the users more logical, you can move the user to the same VC "A" "B" "C" .. (in the new order) or let the user remain on the (replaced) screen (first/second etc)

answered Dec 14 '16 at 06:25

Vincent

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is this possible if create tabbarcontroller in storyboard? – New iOS Dev Dec 14 '16 at 06:48

Satachito · Answer 3 · 2016-12-14T07:07:16.373

0

Set viewControllers property of your UITabBarController to a newly ordered viewContoller array.

Sample below is to make your viewControllers reverse ordered ( Called from AppDelegate ).

if let wTB = ( self.window?.rootViewController as? UITabBarController ) {
    if let wVCs = wTB.viewControllers {
        wTB.viewControllers = [ wVCs[ 4 ], wVCs[ 3 ], wVCs[ 2 ], wVCs[ 1 ], wVCs[ 0 ] ]
    }
}

edited Dec 14 '16 at 07:07

answered Dec 14 '16 at 07:01

Satachito

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How to arrange tabbar item at run time in TabBarcontroller?

3 Answers3