Swift iOS EventKit 中的周期性每周事件

Question

我有允许在 EventKit 中创建日历事件的当前方法。

func createEvent(eventStore: EKEventStore, title: String, startDate: NSDate, endDate: NSDate) {
    let event = EKEvent(eventStore: eventStore)

    event.title = title
    event.startDate = startDate
    event.endDate = endDate
    event.calendar = eventStore.defaultCalendarForNewEvents

    do {
        try eventStore.saveEvent(event, span: .ThisEvent)
        savedEventId = event.eventIdentifier
    } catch {
        print("Bad things happened")
    }
}

但是，我希望允许用户选择一周中的几天来创建重复事件。例如，用户设置时间为上午 10:05，并选择星期一、星期三、星期四。如何制定 EventKit 以允许此事件在用户日历上正确安排？

Answer 1

我看到您帖子上的时间戳早在 5 月，因此您可能不再需要帮助，但对于偶然发现此问题的其他人，您必须使用 EKRecurrenceRule class 并附上它参加活动。

这是一个在 Objective-C 中使用它为每个星期五安排事件的示例（如您的场景）：

// The EKRecurrenceRule accepts an NSArray of day objects, I did this to make adding multiple days easier
NSMutableArray *daysArr = [[NSMutableArray alloc] init];

// Days of the week are ordered Sunday to Saturday, 1-7
EKRecurrenceDayOfWeek *theDay = [[EKRecurrenceDayOfWeek alloc] initWithDayOfTheWeek:6 weekNumber:0];

// Add Friday to the array
[daysArr addObject:theDay];

// Instantiate the EKRecurrenceRule, giving it a weekly frequency and the day of the week
EKRecurrenceRule *recurrenceRule = [[EKRecurrenceRule alloc] initRecurrenceWithFrequency:EKRecurrenceFrequencyWeekly interval:1 daysOfTheWeek:daysArr daysOfTheMonth:nil monthsOfTheYear:nil weeksOfTheYear:nil daysOfTheYear:nil setPositions:nil end:nil];

// Apply it to the event
[event setRecurrenceRules:@[recurrenceRule]];

我希望这可以帮助别人！

Answer 2

我知道这也可能晚了，但至少它适用于 Swift 而不是 ObjC。我创建了两个函数，一个在底部创建 Date 事件，另一个创建名为 addEventToCalendar 的重复事件。请注意，您仍然需要明确具体事件是一周中的哪一天。

如果您对活动的运作方式仍有疑问，我建议您咨询this link。

func addEventToCalendar(title: String, description: String?, startDate: Date, endDate: Date, completion: ((_ success: Bool, _ error: NSError?) -> Void)? = nil){
        let eventStore = EKEventStore()

        eventStore.requestAccess(to: .event, completion: { (granted, error) in
            if (granted) && (error == nil) {
                let event = EKEvent(eventStore: eventStore)
                event.title = title
                event.startDate = startDate
                event.endDate = startDate
                event.notes = description
                event.calendar = eventStore.defaultCalendarForNewEvents

                let recurrenceRule = EKRecurrenceRule.init(
                    recurrenceWith: .daily,
                    interval: 1,
                    daysOfTheWeek: [EKRecurrenceDayOfWeek.init(EKWeekday.saturday)],
                    daysOfTheMonth: nil,
                    monthsOfTheYear: nil,
                    weeksOfTheYear: nil,
                    daysOfTheYear: nil,
                    setPositions: nil,
                    end: EKRecurrenceEnd.init(end:endDate)
                )

                event.recurrenceRules = [recurrenceRule]
                do {
                    try eventStore.save(event, span: .thisEvent)
                } catch let e as NSError {
                    completion?(false, e)
                    return
                }
                completion?(true, nil)
            } else {
                completion?(false, error as NSError?)
            }
        })
    }

    private func createDate(date: String!, hours: Int!, minutes:Int! ) -> Date{
        var fullDateArr = date.components(separatedBy: "-")

        let startMonth: Int? = Int(fullDateArr[0])!
        let startDay: Int? = Int(fullDateArr[1])!
        let startYear: Int = Int(fullDateArr[2])!


        var dateComponents = DateComponents()
        dateComponents.year = startYear
        dateComponents.month = startMonth
        dateComponents.day = startDay
        dateComponents.timeZone = TimeZone(abbreviation: "MDT") // ELP Standard Time
        dateComponents.hour = hours
        dateComponents.minute = minutes

        let userCalendar = Calendar.current // user calendar
        let someDateTime = userCalendar.date(from: dateComponents)

        return someDateTime!
    }