Passing data from modal segue to parent

Question

I want to pass data (e.g. set var) from modal segue to parent, how can I do that?

I’m using that code to exit from modal segue:

@IBAction func doneC         


        

Answer 1

In the second viewController (the one showed by the segue) declare a variable like

var parentVC : UIViewController?

then when you call segue from parent

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?)
{
    if segue.identifier == "yourSegue" {
        let secondController= segue.destinationViewController as UIViewController
secondController.parentVC = self
    }
}

so you can use

@IBAction func doneClicked(sender: AnyObject) {
    self.parentVC.yourVariable = 0
    self.dismissViewControllerAnimated(true, completion: nil)
}