Navigation Back to another View Controller instead of from which it appeared

Question

is it possible to change the previous view controllers of a UINavigationController?

Suppose I have three view controllers (A, B, C) which are embedded in a UINavigationController. Tapping a button in A pushes to B and tapping a button in B will pushes to C. Now, if the user taps on the back button of C, I want redirect the user directly to A instead of B.

Use unwind segue read : https://stackoverflow.com/questions/44513291/retrieving-stack-of-viewcontrollers-when-segueing-programatically/44513322#44513322 — Sandeep Bhandari, Sep 04 '17 at 08:54
@Gagan_iOS.There is no need of Code.it so simple problem and which can explain by example.so why you need code to check? — Jay Patel, Sep 04 '17 at 11:48

score 2 · Answer 1 · answered Sep 04 '17 at 08:52

let arrViewControllers: [Any]? = self.navigationController?.viewControllers
    for controller: Any in arrViewControllers! {
        if (controller is cVC) {
            self.navigationController!.popToViewController(controller as! UIViewController, animated: true)
        }
    }

score 1 · Answer 2 · answered Sep 04 '17 at 08:51

1

Sure there is -

    self.navigationController?.popToViewController(viewControllerA, animated: true)

For more info, read the documentation.

Check out this SO question to learn how to combine it with the back button.

answered Sep 04 '17 at 08:51

Milan Nosáľ

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This also worked. To use this one i need to change back button to custom back button or change back button action. because if user swap to go back it will show second View Controller. – Jay Patel Sep 04 '17 at 11:47

score 1 · Accepted Answer · answered Sep 04 '17 at 08:51

You should remove B from your navigation controller's viewControllers array in C's viewDidAppear method.

var didRemoveB = false

override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)
    if !didRemoveB {
        navigationController?.viewControllers.remove(atIndex: 1) //assuming B's index is 1
        didRemoveB = true
    }
}

score 0 · Answer 4 · answered Sep 04 '17 at 08:58

It's possible in many way, First you can handle when your ViewController B is disappear and change stack of viewControllers in navigationController

override func viewWillDisappear(animated : Bool) {
    super.viewWillDisappear(animated)

    if (self.isMovingFromParentViewController()){
      self.navigationController.viewControllers = viewControllers // your viewControllers stack
    }
}

UPDATE

or pop to root:

self.navigationController.popToRootViewControllerAnimated()

or pop view controllers until the specified view controller is at the top of the navigation stack.:

self.navigationController.popToViewController(:animated:)

Navigation Back to another View Controller instead of from which it appeared

4 Answers4