Textfield deleting newly added characters

Question

I have a label that gets info from the previous view controller as follows

  @IBOutlet weak var textField: UITextField!
   var label = String()

  func textFieldDidBeginEditing(_ textField: UITextField) {
        self.textField.text = String(self.label.dropLast())
    }

Here is the scenario:

textField on loading: Apple (edit Icon)
textField on editing first time: Apples are healthy
textField on tapping again: Apple 

Everything is fine when I start editing textField but once I tapped outside or go to another field and come back to the textField, all the editing is gone. How to prevent this from happening?

Answer 1

I think it's because textFieldDidBeginEditing is called each time you tap on the textField, so the text is reset to your label's text.

If it is a one-time-only assignment, you should consider doing it in viewDidLoad. This will also allow you to keep your initial label value if you don't want it changed.

You can also assign the text to your label property in textFieldDidEndEditing.