swift - 滑动到其他月份时 FSCalendar 自定义问题

Question

我正在尝试更改特定日期的填充颜色，这些日期是当前显示的月份的一部分。

我的问题:这只适用于最初显示的月份。如果我来回滑动到下个月/上个月，背景颜色似乎会分配给随机日期。

示例

最初显示的月份(按预期工作): 上个月(颜色分配错误):

我的 View Controller

import Foundation
import FSCalendar

// MARK: - Class: CalendarViewController
class CalendarViewController: UIViewController, FSCalendarDelegate, FSCalendarDelegateAppearance {
    
    // MARK: Instance Properties
    fileprivate lazy var dateFormatter: DateFormatter = {
        let formatter = DateFormatter()
        formatter.dateFormat = "yyyy/MM/dd"
        return formatter
    }()
    
    var uncessfulTrainingDays: [String] = []
    var notcompletedTrainingDays: [String] = []
    
    // MARK: IBOutlets
    @IBOutlet private weak var meetingInfoView: UIView!
    @IBOutlet private weak var milestoneReachedLabel: UILabel!
    @IBOutlet private weak var nextMilestoneLabel: UILabel!
    @IBOutlet private weak var calendar: FSCalendar!
    @IBOutlet private weak var nextMeetingDateLabel: UILabel!
    @IBOutlet private weak var nextMeetingDescriptionLabel: UILabel!
    
    // MARK: Overridden Methods
    override func viewDidLoad() {
        super.viewDidLoad()
        uncessfulTrainingDays = ["2019/01/06"]
        notcompletedTrainingDays = []
        meetingInfoView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(self.meetingPressed)))
        calendar.delegate = self
        calendar.select(Date())
        nextMeetingDateLabel.text = "26.12.2018"
        nextMeetingDescriptionLabel.text = "Meeting: check healing progress"
    }
    
    func calendar(_ calendar: FSCalendar, appearance: FSCalendarAppearance, fillDefaultColorFor date: Date) -> UIColor? {
        let currentDate = Date()
        let key = self.dateFormatter.string(from: date)
        let cal = Calendar.current
        
        // Is date in the curently displayed month?
        let monthOfDate = cal.component(.month, from: date)
        let monthOfCal = cal.component(.month, from: calendar.currentPage)
        
        let isInDisplayedMonth = monthOfDate == monthOfCal
        
        if isInDisplayedMonth {
            if self.uncessfulTrainingDays.contains(key) {
                return UIColor(named: "DarkRed")
            } else if date < currentDate {
                return UIColor(named: "PrimaryAccent")
            }
        }
        return nil
    }
}

当我来回滑动到上个月/下个月时，我的 FSCalendar View 似乎无法正确更新。

你知道我的代码可能有什么问题吗？

Answer 1

这个函数解决了我的问题:

func calendarCurrentPageDidChange(_ calendar: FSCalendar) {
        calendar.reloadData()
}