UiTextfield- First letter must be 0

Question

I am using phone number texfield, now i am using this format for texfield (#) ### ### ###, now issue is that i want first character 0 as compulsary, like this (0) 959 554 54

Answer 1

If you create Enum, you can choice your textField type and make the extension properties for this field

func textField(_ textField: UITextField,
                   shouldChangeCharactersIn range: NSRange,
                   replacementString string: String) -> Bool {
        if cellType == .phone {
            guard var sanitizedText = textField.text else { return true }
           if !sanitizedText.isEmpty && !sanitizedText.hasPrefix("(0)") {
              sanitizedText.text = "(0)" + sanitizedText
           }
        }
}