(Swift) PrepareForSegue: fatal error: unexpectedly found nil while unwrapping an Optional value

Question

DetailViewController:

    @IBOutlet var selectedBundesland: UILabel!

TableViewController:

    override func prepareForSegue         


        

Answer 1

While the correct solution is to store the text and attach it to the label later in viewDidLoad or something, for testing proposes, you can bypass the issue by forcing the destinationViewController to build itself from storyboard by calling its view property like:

override func prepare(for segue: UIStoryboardSegue, sender: Any?){

     if (segue.identifier == "TestViewController") {
          var vc:FirstViewController = segue.destination as! TestViewController
          print(vc.view)
          vc.testLabel.text = "Hello World!"
     }
}

made for Swift 3.0 with love