Adding Text Fileld in UIAlertController like a promt box in iOS

Swift

let alert = UIAlertController(title: "Hello",
                              message: "Welcome to the world of iOS",preferredStyle: UIAlertControllerStyle.alert)
 let defaultAction = UIAlertAction(title: “OK”, style: UIAlertActionStyle.default) { (action) in}defaultAction.isEnabled = false
alert.addAction(defaultAction)alert.addTextFieldWithConfigurationHandler { (textField) in
     textField.delegate = self}
present(alert, animated: true, completion: nil)

Objective-C

UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"Hello"
                                                               message:@"Welcome to the world of iOS”preferredStyle:UIAlertControllerStyleAlert];UIAlertAction* defaultAction = [UIAlertAction actionWithTitle:@"OK"
                                                        style:UIAlertActionStyleDefaulthandler:^(UIAlertAction * action) {}];defaultAction.enabled = NO;
[alert addAction:defaultAction];[alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {
     textField.delegate = self;}];
[self presentViewController:alert animated:YES completion:nil];