FSCalendar 的事件点没有出现

Question

FSCalendar 的事件点没有出现。直到我滑动到下个月或上个月，事件点才出现。我确实使用 calendar.reloadData() 这是我的代码：

 func calendar(_ calendar: FSCalendar, numberOfEventsFor date: Date) -> Int {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "yyyy/MM/dd"
    dateFormatter.locale = Locale.init(identifier: "fa_IR")

    for dateStr in dates{
        if(dateFormatter.string(from: date) == dateStr)
        {
            return 1
            self.calendar.reloadData()
        }
    }
    return 0
}

我也在 viewDidLoad() 中使用 calendar.reloadData():

    super.viewDidLoad()

    self.calendar.firstWeekday = 7

    self.calendar.locale = Locale(identifier: "fa_IR")

    self.calendar.select(Date())
    self.calendar.identifier = NSCalendar.Identifier.persian.rawValue
    self.calendar.reloadData()

所以我做错了什么？
我也尝试将我的逻辑放在 will displaycell 中，但这也没有用。这是整个视图控制器：

@IBOutlet weak var calendar: FSCalendar!

@IBAction func addEventButton(_ sender: UIBarButtonItem) {
    let date = Date()
    let formatter = DateFormatter()

    // initially set the format based on your datepicker date
    formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"

    let myString = formatter.string(from: date)
    // convert your string to date
    let yourDate = formatter.date(from: myString)
    //then again set the date format whhich type of output you need

    formatter.calendar = Calendar (identifier: .persian)
    formatter.dateFormat = "yyyy/MM/dd"
    formatter.locale = Locale.init(identifier: "fa_IR")
    // again convert your date to string
    dateString = formatter.string(from: yourDate!)                

    self.performSegue(withIdentifier: "addEvent", sender: UIView.self)
}

  @IBOutlet weak var tblCalendar: UITableView!


func calendar(_ calendar: FSCalendar!, didSelectDate date: Date!) {

    eventIndex.removeAll()
    let formatter = DateFormatter()
    // initially set the format based on your datepicker date
    formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"

    let myString = formatter.string(from: date)
    // convert your string to date
    let yourDate = formatter.date(from: myString)
    //then again set the date format whhich type of output you need

    formatter.calendar = Calendar (identifier: .persian)
    formatter.dateFormat = "yyyy/MM/dd"
    formatter.locale = Locale.init(identifier: "fa_IR")
    // again convert your date to string
    let selectedDate = formatter.string(from: yourDate!)

    var index = [Int()]
    if dates.isEmpty == false{
    for i in 0...dates.count - 1 {
        if dates[i] == selectedDate{
            index.append(i)
        }
        }
    }
        index.remove(at: 0)
    if index.isEmpty == false {
        for i in 0...index.count - 1 {
            let isIndexValid = dates.indices.contains(index[i])

            if  isIndexValid == true {
                let isEventValid = event.indices.contains(index[i])
                if isEventValid == true{
            eventIndex.append(event[index[i]])
                }
            }
    }
    }

    tblCalendar.reloadData()       
}

func calendar(_ calendar: FSCalendar, numberOfEventsFor date: Date) -> Int {
           return 0
}

func calendar(_ calendar: FSCalendar, willDisplay cell: FSCalendarCell, for date: Date, at position: FSCalendarMonthPosition){

    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "yyyy/MM/dd"
    dateFormatter.locale = Locale.init(identifier: "fa_IR")

    for dateStr in dates{
        if(dateFormatter.string(from: date) == dateStr)
        {
            cell.eventIndicator.numberOfEvents = 1
            cell.eventIndicator.isHidden = false
            cell.eventIndicator.color = UIColor.blue
        }
    }             
}

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

    return eventIndex.count
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

    let cell =  tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
    if eventIndex.indices.contains(indexPath.row) == true {
    cell.textLabel?.text = eventIndex [indexPath.row]
    }

    return cell
}

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    if eventIndex.indices.contains(indexPath.row) == true {
        let text = eventIndex[indexPath.row]
        if let indexOfCellString = event.index(of: text) {
            tableViewCellNumber = indexOfCellString
        }
    }
    tblCalendar.reloadData()
           self.performSegue(withIdentifier: "infoView", sender: self)
}    

func showArabicSubTitle(date: Date!) -> String!
{
    let dateFormater = DateFormatter()
    dateFormater.dateFormat = "dd"
    dateFormater.locale = Locale(identifier: "fa_IR")

    var calendarDate = dateFormater.string(from: date as Date)        
    let characters = Array(calendarDate.characters)
    let substituteArabic = ["0":"٠", "1":"١", "2":"٢", "3":"٣", "4":"٤", "5":"٥", "6":"٦", "7":"٧", "8":"٨", "9":"٩"]
    var arabicDate =  ""

    for i in characters {
        if let subs = substituteArabic[String(i)] {
            arabicDate += subs
        } else {
            arabicDate += String(i)
        }
    }
    return arabicDate
}

//MARK: - FSCalendarDelegate
func calendar(_ calendar: FSCalendar, titleFor date: Date) -> String? {
    L102Language.setAppleLAnguageTo(lang: "fa")

    return self.showArabicSubTitle(date: date)
}

override func viewDidLoad() {

    if firstIndexRemover == true {
        eventIndex.removeAll()
        firstIndexRemover = false
    }                              
    super.viewDidLoad()

    self.calendar.firstWeekday = 7
    self.calendar.locale = Locale(identifier: "fa_IR")
    self.calendar.select(Date())
    self.calendar.identifier = NSCalendar.Identifier.persian.rawValue

    tblCalendar.delegate = self
    tblCalendar.dataSource = self
    userData = UserDefaults.standard.bool(forKey: "userData")
    if userData == true {
        event = UserDefaults.standard.object(forKey: "theEvent") as! [String]
    }else{
        event.append("رخدادی موجود نیست")
        UserDefaults.standard.set(event, forKey: "theEvent")
        if event[0] == "رخدادی موجود نیست"{
            event.remove(at:0)
            UserDefaults.standard.set(event, forKey: "theEvent")                
        }
    }        
    tblCalendar.reloadData()
    tblCalendar.backgroundColor = UIColor.lightGray
}

func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
    cell.backgroundColor = UIColor.clear
}

func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath){
     let cell =  tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as UITableViewCell
    if editingStyle == UITableViewCellEditingStyle.delete{
        eventIndex.remove (at:indexPath.row)
        for i in 0...event.count - 1{
            let isIndexValid = event.indices.contains(i)
            if isIndexValid == true {
            if event[i] == cell.textLabel?.text{
                event.remove(at: i)
            }

        }
        }
                   UserDefaults.standard.set (event, forKey:"theEvent")
    }
    tblCalendar.reloadData()

}
func tableView(_ tableView: UITableView,
               titleForDeleteConfirmationButtonForRowAt indexPath: IndexPath) -> String?{
    return "حذف"
}
override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
}
override func viewDidAppear(_ animated: Bool){
    tblCalendar.reloadData()        
}

Answer 1

尝试在您的 numberOfEvents 方法中返回 0 并在 willDisplayCell

处添加您的逻辑

以下应在您的条件下执行 willDisplayCell

中的事件数

cell.eventIndicator.numberOfEvents = 1
cell.eventIndicator.isHidden = false
cell.eventIndicator.color = UIColor.green

此方法和 numberOfEventsForDate 成本很高。为了提高效率，您可以通过按升序对日期数据源进行排序来限制代码执行次数，并且仅在最小和最大日期范围内时才执行上述代码。您可以使用 numberOfEventsForDate 方法实现相同的效果，但在这里您可以直接处理单元格的属性。

编辑：
在您更新的代码中，您似乎没有在 viewDidLoad 中重新加载 self.calendar。您只重新加载了 self.tblCalendar.

Add self.calendar.reloadData()。它应该工作。如果没有，请尝试在主线程中添加日历重新加载：

DispatchQueue.main.async { self.calendar.reloadData() }

FSCalendar 的事件点没有出现

FSCalendar's event dot does not appear

ios

swift

fscalendar