Cannot convert value of type 'NSRange' (aka '_NSRange') to expected type 'Range'(aka 'Range')

Question

Getting this error when checking the range for string characters...

@objc func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, re         


        

Answer 1

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)
        // ...
    }
    // ...
}

Answer 2

Instead of text! say (text! as NSString).

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