How to pass values from a Pop Up View Controller to the Previous View Controller?

Question

So In my 1stViewController I have this code:

@IBAction func colorDropdown(_ sender: Any) {
    self.popUpColorPicker()
}

func popUpColorPicker() {
    let popOv         


        

Answer 1

you can always use unwind to do some stuff upon unwinding

declare a IBAction in your first vc

var color: UIColor!
@IBAction func unwindToCheckout(segue: UIStoryboardSegue) { 
   //do some stuff with color
}

then create exit segue for popout viewcontroller then you can dismiss popout like this

self.performSegueWithIdentifier("unwindToVC1", sender: selectedColor)

then in prepareForSegue

if segue.identifier == "unwindToVC1" {
  (segue.destinationViewController as! FirstViewController).color = sender as! UIColor
}

also you can create delegate to reach fistviewcontroller and do some stuff which is way easier to do