ios swift 4 date picker

ios date picker action

    @IBAction func datePickerAction(_ sender: UITextField) {
        let datePickerView:UIDatePicker = UIDatePicker()
        datePickerView.datePickerMode = UIDatePickerMode.date
        sender.inputView = datePickerView
        datePickerView.addTarget(self, action: #selector(ViewController.datePickerValueChanged), for: UIControlEvents.valueChanged)
        
    }
    
    
  @objc func datePickerValueChanged(sender:UIDatePicker) {
        
        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = "yyyy/MM/dd"
        text1.text = dateFormatter.string(from: sender.date)
        
    }