Hide keyboard on touch textfield if keyboard opened // swift

//// Vladimir Zhelnov - neatek.pw - Web/iOS dev
var keyboard_s = false

override func viewDidLoad() {
        NotificationCenter.default.addObserver(self, selector: #selector(ViewController.keyboardWillShow), name: NSNotification.Name.UIKeyboardWillShow, object: nil)

        NotificationCenter.default.addObserver(self, selector: #selector(ViewController.keyboardWillHide), name: NSNotification.Name.UIKeyboardWillHide, object: nil)

        HERE_IS_TEXTFIELD.addTarget(self, action: #selector(ViewController.myTargetFunction), for: UIControlEvents.touchDown)
}

func myTargetFunction(textField: UITextField) {
    if(keyboard_s) {
        view.endEditing(true)
    }
}

func keyboardWillShow(notification:NSNotification) {
    print("Show")
    keyboard_s = true
}

func keyboardWillHide(notification:NSNotification) {
    print("Hide")
    keyboard_s = false
}