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iOS

Posted by Jonas Kristensen
Jonas Kristensen
2,738 Points

Whats wrong with my code?

Im trying to use Segue, to tell me the capital on a Second View Controller. There are no errors in Xcode, but the label on Second Viewcontroller doesn't show me anything? You can see the codes below

Jonas Kristensen
Jonas Kristensen
2,738 Points 
import UIKit

class ViewController: UIViewController {

    var lande = 0

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    @IBAction func spainKnap(sender: UIButton) {
        lande = lande + 1
    }

    @IBAction func denmarkKnap(sender: UIButton) {
        lande = lande + 2
    }

    @IBAction func italyKnap(sender: UIButton) {
        lande = lande + 3
    }


    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        if segue.identifier == "sideSkift" {

            let sideEtKontrol = segue.destinationViewController as! SecondVC


            if lande == 1 {
                sideEtKontrol.segueText = "Madrid"
            }
            else if lande == 2 {
                sideEtKontrol.segueText = "København"
            }
            else if lande == 3 {
                sideEtKontrol.segueText = "Rom"
            }

            else {
                sideEtKontrol.segueText = "Du har ikke trykket"
            }

        }

    }
}
Jonas Kristensen
Jonas Kristensen
2,738 Points 
import Foundation
import UIKit

class SecondVC: UIViewController {


    @IBOutlet var labelText: UILabel!

    var segueText: String = ""

    override func viewDidLoad() {

        super.viewDidLoad()

        labelText.text = segueText

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
   }


}

1 Answer

Jhoan Arango
Jhoan Arango
14,575 Points
Jhoan Arango
Jhoan Arango
14,575 Points

Hey Jonas: Try this

import UIKit

class ViewController: UIViewController {

    var lande = 0

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    @IBAction func spainKnap(sender: UIButton) {
        lande = lande + 1
        performSegueWithIdentifier("sideSkift", sender: sender)

    }

    @IBAction func denmarkKnap(sender: UIButton) {
        lande = lande + 2
        performSegueWithIdentifier("sideSkift", sender: sender)
    }

    @IBAction func italyKnap(sender: UIButton) {
        lande = lande + 3
        performSegueWithIdentifier("sideSkift", sender: sender)
    }


    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        if segue.identifier == "sideSkift" {

            let sideEtKontrol = segue.destinationViewController as! SecondVC


            if lande == 1 {
                sideEtKontrol.segueText = "Madrid"
            }
            else if lande == 2 {
                sideEtKontrol.segueText = "København"
            }
            else if lande == 3 {
                sideEtKontrol.segueText = "Rom"
            }

            else {
                sideEtKontrol.segueText = "Du har ikke trykket"
            }

        }

    }
}

Second VC

import Foundation
import UIKit

class SecondVC: UIViewController {


    @IBOutlet var labelText: UILabel!

    var segueText = ""

    override func viewDidLoad() {

        super.viewDidLoad()

        labelText.text = segueText

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


}
Jonas Kristensen
Jonas Kristensen
2,738 Points

It works! Thanks a lot, i really wondered how you can pass difference data with difference buttons! But now i got a new problem. How do i get my variable called "lande" to be 0 everytime i go back to the First View? Now it puts the value of the button together with the last button i pressed. Can i make somekind of Default in the segue function?