ios – 通过Cocoapods设置CVCalendar：视图未显示

import UIKit
import CVCalendar

class ViewController: UIViewController,CVCalendarViewDelegate,CVCalendarMenuViewDelegate {

    @IBOutlet weak var menuView: CVCalendarMenuView!

    @IBOutlet weak var calendarView: CVCalendarView!



    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view,typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()

        calendarView.commitCalendarViewupdate()
        menuView.commitMenuViewupdate()
    }
    func presentationMode() -> CalendarMode {
        return .MonthView
    }

    func firstWeekday() -> Weekday {
        return .Sunday
    }

}