override func viewDidLoad() {
        super.viewDidLoad()

        datePicker = UIDatePicker()
        datePicker?.datePickerMode = .date
        datePicker?.addTarget(self, action: #selector(SecondViewController.dateChanged(datePicker:)), for: .valueChanged)

        let tapGesture = UITapGestureRecognizer(target: self, action: #selector(SecondViewController.viewTapped(gestureRecognizer:)))

        dob.inputView = datePicker

}

    func viewTapped(gestureRecognizer: UITapGestureRecognizer){

    }

    @objc func dateChanged(datePicker: UIDatePicker){

        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = "mm/dd/yyyy"

        dob.text = dateFormatter.string(from: datePicker.date)
        view.endEditing(true)
    }