如何在iOS swift中实现月、日、时的自定义选择器？

import UIKit

class ViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource {
    
    @IBOutlet weak var monthPicker: UIPickerView!
    @IBOutlet weak var dayPicker: UIPickerView!
    @IBOutlet weak var hourPicker: UIPickerView!
    
    let months = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]
    let days = Array(1...31)
    let hours = Array(0...23)
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        monthPicker.delegate = self
        monthPicker.dataSource = self
        
        dayPicker.delegate = self
        dayPicker.dataSource = self
        
        hourPicker.delegate = self
        hourPicker.dataSource = self
    }
    
    // MARK: - UIPickerViewDataSource
    
    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }
    
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        if pickerView == monthPicker {
            return months.count
        } else if pickerView == dayPicker {
            return days.count
        } else if pickerView == hourPicker {
            return hours.count
        }
        return 0
    }
    
    // MARK: - UIPickerViewDelegate
    
    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        if pickerView == monthPicker {
            return months[row]
        } else if pickerView == dayPicker {
            return String(days[row])
        } else if pickerView == hourPicker {
            return String(hours[row])
        }
        return nil
    }
    
    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        if pickerView == monthPicker {
            let selectedMonth = months[row]
            print("Selected Month: \(selectedMonth)")
        } else if pickerView == dayPicker {
            let selectedDay = days[row]
            print("Selected Day: \(selectedDay)")
        } else if pickerView == hourPicker {
            let selectedHour = hours[row]
            print("Selected Hour: \(selectedHour)")
        }
    }
}