Accessing @IBAction's property of ViewController and pass it to SecondViewController

Question

How to access points property from IBAction method of ViewController and pass it to scoreLabel of SecondViewController?

import UIKit

class ViewController: UIViewController {
    var points: Int = 0

    @IBAction func action(sender: UIButton) {
        points += 1
    }
}



class SecondViewController: UIViewController {
    @IBOutlet weak var scoreLabel: UILabel!

    override func viewDidLoad() {
        super.viewDidLoad()
    }
}

Are you segueing to `SecondViewController` with an identifier? — Xcoder, Jan 03 '18 at 19:21
Yes. It's here: performSegueWithIdentifier("showScore", sender: self) — Andy Jazz, Jan 03 '18 at 19:25
There's an error: secondViewController.scoreLabel.text = String(points) — Andy Jazz, Jan 03 '18 at 19:25
Just checking: You put the method in `ViewController`, correct? — Xcoder, Jan 03 '18 at 19:25
Hmm. Try this instead: `secondViewController.scoreLabel.text = "\(points)"` — Xcoder, Jan 03 '18 at 19:27
Sorry about that. Check my updated answer. It should work... — Xcoder, Jan 03 '18 at 19:34
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/162459/discussion-between-xcoder-and-andy). — Xcoder, Jan 03 '18 at 22:21
https://stackoverflow.com/questions/49478503/segue-doesnt-work-in-macos — Andy Jazz, Mar 27 '18 at 13:38

Xcoder · Accepted Answer · 2018-01-03T19:33:49.863

Note: This is assuming that you are segueing to SecondViewController from ViewController.

In SecondViewController, declare a variable called score or something like that:

var score: Int = 0

In ViewController, implement the prepareForSegue method like so:

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "YourSegueIdentifierForSecondViewController" {
        if let secondViewController = segue.destination as? SecondViewController {
            secondViewController.score = points
        }
    }
}

Then in SecondViewController's viewDidLoad, you can set score to your label:

scoreLabel.text = String(score)

Accessing @IBAction's property of ViewController and pass it to SecondViewController

1 Answers1