How to remove all viewControllers except one from stack in swift3

Question

I have 4 view controllers suppose A,B,C,D. ViewController D is on top and on click of button I have to go to ViewController A and remove all remaining ViewControllers. How to achieve this

Are you using a navigation controller or added a child controller? — Harshal Valanda, May 26 '17 at 09:26
If I understood correctly, something like [self.navigationController popToRootViewControllerAnimated:YES]; should work! — Vamshi Krishna, May 26 '17 at 09:27
For swift 5, check this out https://stackoverflow.com/a/57327328/10579134 — Kedar Sukerkar, Aug 02 '19 at 19:43

score 3 · Answer 1 · answered May 26 '17 at 09:29

3

self.navigationController.popToRootViewController(animated: true)

answered May 26 '17 at 09:29

Retterdesdialogs

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score 3 · Answer 2 · answered May 26 '17 at 10:17

The UINavigationController's viewControllers property is get set property, that means you could write your own array of view controllers.

example,

let VCs = self.navigationController.viewControllers    //VCs = [A, B, C, D]

let vcA  = VCs[0]    //vcA = A
//finally
self.navigationController.viewControllers = [vcA] //done
// OR
self.navigationController.setViewControllers([vcA], animated: true)

score 0 · Answer 3 · answered May 26 '17 at 09:44

If you are looking for one viewController in the stack. I have also added the code for if you couldn't find that one controller in the stack goto mainController or the firstController in the stack:

if let viewControllers = self.navigationController?.viewControllers {
    var element_count = 0
    for controller in viewControllers {
        if controller is YourViewController {
            element_count = 1
            self.navigationController?.popToViewController(controller, animated: true)
            break
        }
    }
    if element_count != 1{
        _ = self.navigationController?.popToRootViewController(animated: true)
    }
}

Is this what you are looking for? – Prateekro May 26 '17 at 09:46 — Prateekro, May 26 '17 at 09:46

How to remove all viewControllers except one from stack in swift3

3 Answers3