Xcode Swift perform segue with alert

Question

I have three ViewControllers. I want to perform a segue from the ThirdViewController to the SecondViewController when you click on the Ok Button of an alert showing up. I already tried with this code:

alert.addAction(UIAlertAction(title: "Ok!", style: UIAlertActionStyle.default, handler: { action -> Void in
     self.performSegue(withIdentifier: "ThirdViewControllerSegueBack", sender: self)
}))

The problem is that a new window of the SecondViewController shows up, so when I click back on the navigation bar it leads me back to the ThirdViewController. I want it to show the FirstViewController.

You need an unwind segue: https://stackoverflow.com/questions/12561735/what-are-unwind-segues-for-and-how-do-you-use-them — Shades, Sep 30 '17 at 11:31
Try this if it works in your scenario: https://stackoverflow.com/questions/45792130/unwind-then-segue-without-showing-intermediate-view-controller/45792543#45792543 — Amit, Sep 30 '17 at 11:34
just have a look at this how-to: (unwind segues) https://medium.com/@mimicatcodes/create-unwind-segues-in-swift-3-8793f7d23c6f — AlexWoe89, Sep 30 '17 at 13:54

score 0 · Accepted Answer · answered Sep 30 '17 at 13:31

0

In SecondViewController you must create the Unwind segue

@IBAction func unwindToController2(segue:UIStoryboardSegue) { }

The on storyboard in ViewController3 drag from ViewController to exit Button and add segue. Add identifier to it, and call in UIAlertController

answered Sep 30 '17 at 13:31

maxkoriakin

287
2
6

@lolinger2001 You are welcome) Please check answer like correct) – maxkoriakin Oct 02 '17 at 07:55

Xcode Swift perform segue with alert

1 Answers1