How to select all text in a UITextField using Swift

Question

I'm using below code, but for some reason it's not working. Any idea?

textField.text = "Hello"

textField.becomeFirstResponder()

textField.selectedTextRange = self.textField.textRangeFromPosition(self.textField.beginningOfDocument, toPosition: self.textField.endOfDocument)

This is what I get:

Answer 1

I had the same problem and I solved like this:

First, implement UITextFieldDelegate in your ViewController

class ViewController :  UITextFieldDelegate

Then, set your textField delegate to "self"

textField.delegate = self

Then, add this function to your ViewController class

func textFieldDidBeginEditing(textField: UITextField) {
    textField.selectedTextRange = textField.textRangeFromPosition(textField.beginningOfDocument, toPosition: textField.endOfDocument)
}

If you are already using the ViewController as delegate for other TextFields that you don't want to behave this way, you can just use a switch, like this:

func textFieldDidBeginEditing(textField: UITextField) {
    switch textField {
         case yourTextField:
              textField.selectedTextRange = textField.textRangeFromPosition(textField.beginningOfDocument, toPosition: textField.endOfDocument)
              break;

         case default:
              break;
    }
}