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Xcode – Why does my transmitted variable always remain empty?

Hi, recently I tried to send a variable from ViewController 1 :

guard let viewController2 = self.storyboard?.instantiateViewController(withIdentifier: "ViewController2") as? ViewController2 else
                {
                    fatalError("Error when trying to get the reference to the Step 2")
                }
        viewController2.testName = TextFieldOutlet.text!

To ViewController2 :

class ViewController2: UIViewController {
    @IBOutlet weak var labelTest: UILabel!
    
    public var testName = ""

    override func viewDidLoad() {
        super.viewDidLoad()
        labelTest.text = testName
    }
    
}

All the code seems to be correct but my label and my variable in the ViewController2 remain empty.

Could someone help me?

Tags:

2

Answers


  1. 0

    Code looks fine, you should debug it.
    print(TextFieldOutlet.text) before setting it to viewController2.testName.
    or use breakpoints to find out the issue.

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  2. 0

    You can just instead of calling it, you need to trigger it by action that’s why I’ve added a button like in the image and make connection between it and viewController2 and worked with its segue and it worked fine

    The image:
    enter image description here

    Code added in viewController:

    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    
     let viewController2 = segue.destination as! ViewController2
     viewController2.testName = TextFieldOutlet.text!
    
    
}
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