如何在UITextField中打印datePicker值

Question

Here is my code, I dont want any button to trigger the label. I want it to change every time the picker is moved :

    @IBOutlet weak var dateLabel: UILabel!

    @IBOutlet weak var datePicker: UIDatePicker!

    let datePickerView:UIDatePicker = UIDatePicker()

    datePickerView.datePickerMode = UIDatePickerMode.date

    datePickerView.addTarget(self, action: datePickerValueChanged(sender: UIDatePicker), for: UIControlEvents.valueChanged)


func datePickerValueChanged(sender:UIDatePicker) {

    let dateFormatter = DateFormatter()

    dateFormatter.dateStyle = DateFormatter.Style.short

    dateFormatter.timeStyle = DateFormatter.Style.short

    dateLabel.text = dateFormatter.string(from: sender.date)

}

Answer 1

Replace This

 datePicker.addTarget(self, action: datePickerValueChanged(sender: UIDatePicker), for: UIControlEvents.valueChanged)

With

 datePicker.addTarget(self, action: #selector(self.datePickerValueChanged), forControlEvents: UIControlEvents.valueChanged)