ios - 获取默认日历时出错，仅第一次出现，但之后工作正常

Question

我已经编写了一段代码来创建事件。代码非常简单:

    let eventStore : EKEventStore = EKEventStore()
    eventStore.requestAccess(to: .event, completion: {
            granted, error in
            if (granted) && (error == nil) {
                print("granted \(granted)")
                print("error  \(String(describing: error))")

            let event:EKEvent = EKEvent(eventStore: eventStore)
            event.title = title
            event.startDate = startDate
            event.endDate = endDate
            event.notes = "Lecture"
            event.calendar = eventStore.defaultCalendarForNewEvents
            //                eventStore.saveEvent(event, span: EKSpanThisEvent, error: nil)
            guard ((try? eventStore.save(event, span: EKSpan.thisEvent, commit: true)) != nil)else{
                print("error  saving event")
                completion(false)
                return
            }
            print("Saved Event")
        }}

当代码第一次运行时，会出现以下错误:

[EventKit] Error getting default calendar for new events: Error Domain=EKCADErrorDomain Code=1019 "(null)" 2018-05-18 00:18:16.586150+0500 SevimFahrschuleMobile[11413:3650672] [EventKit] No object ID provided. Will not find out if the object exists.

但是当我再次运行这段代码时，它就起作用了。我没有得到。这里有类似的问题，但解决方案是获得提醒授权，然后保存事件，即

eventStore.requestAccess(to: .reminder) { (<#Bool#>, <#Error?#>) in
        <#code#>
    }

这对我来说听起来完全不合逻辑。

如果您发现第一次失败的任何原因，请告诉我。谢谢

Answer 1

在 Info.plist 中添加以下内容:

NSCalendarsUsageDescription
NSRemindersUsageDescription