Swift 4 Unwind segue not working on navigation controller

Question

I am working on an app in Swift 4 and I am trying to unwind a segue. I have a Table View Controller, When the user selects a cell, the segue happens to a navigation controller which has a relationship root view controller with another controller I have UIViewController. In the UIViewController I have a UIButton inside Navigation Items, I have unwind set with the UIButton by selecting the button and dragging to exit and I have the unwind code inside the UITableViewController like so:

    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
            if segue.identifier == "segueRSVP" {
            }
        }



    @IBAction override func unwind(for unwindSegue: UIStoryboardSegue, towardsViewController subsequentVC: UIViewController) {
        print("Here")
    }

But nothing happens, it doesn't even get triggered.

Here are my screenshots:

Put the tableview in the navigation controlller and then you won’t even need the unwind segue or the button. — Paulw11
– Paulw11, Commented Nov 9, 2017 at 19:19
You cant see in my screenshots, but there is a navigation controller above the tableview controller....so it goes navigation controller -> tableview -> navigation controller -> UIViewController — user979331
– user979331, Commented Nov 9, 2017 at 19:42
Then delete the second navigation controller and use a show segue to show the rsvp scene — Paulw11
– Paulw11, Commented Nov 9, 2017 at 20:01

Gabriel Pires · Accepted Answer · 2017-11-09 20:02:42Z

2

Add this unwind to your RSVP controller:

@IBAction func unwindToThisViewController(segue: UIStoryboardSegue) {
    print("IM BACK")
}

Then control + drag the button in your detail controller up to the exit and select the method: unwindToThisViewController

Just tested this on xcode swift 4 and it should work

I'm not sure why, but when I "overrode" unwind, it didn't work for me either, so I set up my own ibaction

answered Nov 9, 2017 at 20:02

Gabriel Pires

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1 Comment

Gabriel Pires Over a year ago

Oh hmm remove this: override func prepare. and remove @IBAction override func unwind and see if that does it

Mazen K · Accepted Answer · 2018-01-22 04:32:53Z

0

In my case, was tagging the swift unwind func with @objc keyword.

@objc func unwindToThisViewController(segue: UIStoryboardSegue) { ... }

Hope this works.

answered Jan 22, 2018 at 4:32

Mazen K

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