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iOS

Aditya Pandey
Aditya Pandey
7,210 Points
Posted by Aditya Pandey
Aditya Pandey
7,210 Points

error in my code

class ViewController: UIViewController, UITextFieldDelegate {

@IBOutlet weak var label: UILabel!
@IBOutlet weak var textField: UITextField!

let capitals  = ["India" : "New Delhi",
                         "China" : "Beijing",
                         "Russia" : "Moscow",
                         "Brazil" : "Brasilia"]

override func viewDidLoad() {
    super.viewDidLoad()

    self.textField.delegate = self
    textField.becomeFirstResponder()

}

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

func textFieldShouldReturn(_ textField: UITextField) -> Bool {
    textField.resignFirstResponder()
    return true
}

func textFieldDidEndEditing(_ textField: UITextField) {

    let key = String(describing: self.textField.text)
    print(capitals[key])

}

}

This is my code and when I type "China" in the text field, it prints nil in the console.

1 Answer

Ian Billings
PLUS
Ian Billings
Courses Plus Student 7,494 Points
Ian Billings
Ian Billings
Courses Plus Student 7,494 Points

Hi,

The issue is the textField.text is an optional String, so you need to unwrap it first, before passing it to the String(description:) initialiser.

E.g.

func textFieldDidEndEditing(_ textField: UITextField) {
    if let text = self.textField.text {
        let key = String(describing: text)
        print(capitals[key])
   }
}
Aditya Pandey
Aditya Pandey
7,210 Points
Aditya Pandey
Aditya Pandey
7,210 Points

Thanks that solved the problem!