Dismiss and Pop a view controller

Question

I want to go back two levels on my view controller stack. I have three segues in this order: Show, Show, Present Modally. There is a navigation controller in use. From my 4th view I want to go back to the 2nd view. I have tried using self.presentingViewController?.presentingViewController?.navigationController?.popViewControllerAnimated(false);

and

self.presentingViewController?.presentingViewController?.dismissViewControllerAnimated(false, completion: nil);

The second one works only if the 2nd and 3rd segues as 'Present Modally'. How can I get them to work with a dismiss and a pop?

Seems like you'd have to dismiss the presented view controller before popping the other two. — Lyndsey Scott, Dec 17 '14 at 22:40
@rdelmar You could only use an unwind segue if you're using a storyboard, right? — Lyndsey Scott, Dec 18 '14 at 00:30

Lyndsey Scott · Answer 1 · 2014-12-18T05:48:13.997

5

Try dismissing the presented view controller before popping the other two:

func dismissThenDoublePop() {

    // Get the presenting/previous view
    let previousView = self.presentingViewController as UINavigationController

    // Dismiss the current view controller then pop the others
    // upon completion
    self.dismissViewControllerAnimated(true, completion:  {

        // Get an array of the current view controllers on your nav stack
        let viewControllers: [UIViewController] = previousView.viewControllers as [UIViewController];

        // Then either pop two view controllers, i.e. pop
        // to viewControllers[viewControllers.count - 2], or
        // pop to the second view controller in the nav stack,
        // i.e. viewControllers[1]. (In this case I've used the
        // first option.)
        self.navigationController!.popToViewController(viewControllers[viewControllers.count - 2], animated: true);

    });
}

edited Dec 18 '14 at 05:48

answered Dec 17 '14 at 23:00

Lyndsey Scott

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It gets to the line that starts with `let viewControllers:...` and crashes with "fatal error: unexpectedly found nil while unwrapping an Optional value" – Ricca Dec 17 '14 at 23:10
@Ricca Yep, you're right navigation controller is nil in the presented view controller. Looking into an alternative now. – Lyndsey Scott Dec 18 '14 at 05:39
@Ricca OK, I've updated my answer to get the previous view as a UINavigationController before the dismissView block. I've tested this code and it works for me. – Lyndsey Scott Dec 18 '14 at 05:49
@LyndseyScott I Tried in this way to move to the home screen. Could you please check whether it is correct or not? let previousView = self.presentingViewController as! UINavigationController self.dismiss(animated: true, completion: { // Get an array of the current view controllers on your nav stack let viewControllers: [UIViewController] = previousView.viewControllers as [UIViewController]; previousView.popToViewController(viewControllers[0], animated: true); }); – suji Oct 09 '17 at 10:28

score 3 · Answer 2 · edited May 23 '17 at 12:25

3

You can use this technique

https://stackoverflow.com/a/15839298/1153100

Simple and clean(Unwind segues)

@IBAction func unwindAction(segue: UIStoryboardSegue) {
}

edited May 23 '17 at 12:25

Community

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answered May 12 '15 at 05:21

iEmad

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score -1 · Answer 3 · answered May 03 '15 at 19:23

-1

You use like this one.

self.navigationController?.popViewControllerAnimated(true)

answered May 03 '15 at 19:23

Nurdin

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score -1 · Answer 4 · answered Aug 18 '17 at 12:33

Just call dismissViewControllerAnimated.It will automatically dismiss all view controllers including presented model viewcontroller.

Objective - C

[self.navigationController dismissViewControllerAnimated:YES completion:nil];

Swift

self.navigationController?.dismissViewControllerAnimated(false, completion: nil);

Dismiss and Pop a view controller

4 Answers4