创建日历,即使关闭iCloud也没有本地来源

Question

我正在尝试创建日历,而不是日历事件而是日历.我无法获取本地来源,我的应用程序崩溃了.

这是我的代码:

let newCalendar = EKCalendar(for: .event, eventStore: eventStore)

newCalendar.title = "Some Calendar Name"

let sourcesInEventStore = eventStore.sources

newCalendar.source = sourcesInEventStore.filter{
            (source: EKSource) -> Bool in
            source.sourceType.rawValue == EKSourceType.local.rawValue
            }.first!

我完全关闭了我的iCloud,仍然无法获得本地资源.

我也试图让这个与iCloud打开工作,我想出了这个代码,但它不起作用

for let source in eventStore.sources
        {
            if(source.sourceType == EKSourceType.calDAV && source.title == "iCloud")
            {
                newCalendar.source = source
            }
        }

        if(newCalendar.source == nil)
        {
            for let source2 in eventStore.sources
            {
                if(source2.sourceType == EKSourceType.local)
                {
                    newCalendar.source = source2
                }
            }
        }

Answer 1

一些问题:

您的代码崩溃了,因为您first从一个空的数组中强制解包.以下是一些建议,以确保EKSource对象数组返回非空数组.

首先,要求用户访问使用他们的日历requestAccess(to:)上的一个EKEventStore实例.其次,使用an if let从过滤后的数组中展开可能的可选值:

let eventStore = EKEventStore()

eventStore.requestAccess(to: .event) { (granted, error) in
    if granted {
        let newCalendar = EKCalendar(for: .event, eventStore: eventStore)

        newCalendar.title = "Some Calendar Name"

        let sourcesInEventStore = eventStore.sources

        let filteredSources = sourcesInEventStore.filter { $0.sourceType == .local }

        if let localSource = filteredSources.first {
            newCalendar.source = localSource
        } else {
            // Somehow, the local calendar was not found, handle error accordingly
        }

    } else {
        // check error and alert the user
    }
}