ios - No se puede convertir el valor del tipo ''NSRange''(alias ''_NSRange'') al tipo esperado ''Range<Index>''(alias ''Range<String.CharacterView.Index>'')

swift

Question

Obteniendo este error al verificar el rango de caracteres de cadena ...

@objc func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool {
    let shouldChange = false
    let text = textField.text
    var newString = text!.stringByReplacingCharactersInRange(range, withString: string) as? NSString
    if newString.length > 14{
        newString = newString.substringToIndex(14)
    }
    textField.text = newString.uppercaseString

    return shouldChange
}

Answer 1

En lugar de text! decir (text! as NSString) .

var newString = (text! as NSString).stringByReplacingCharactersInRange(range, withString: string) as? NSString

Answer 2

Swift 4

func textField(_ textField: UITextField,
               shouldChangeCharactersIn range: NSRange,
               replacementString string: String) -> Bool {

    if let oldString = textField.text {
        let newString = oldString.replacingCharacters(in: Range(range, in: oldString)!,
                                                      with: string)
        // ...
    }
    // ...
}