如何从日历中获取所有事件（Swift）

Question

我对 Swift 有点陌生，但真的很感兴趣。 我想获取我存储在名为“工作”的日历中的所有事件，并将它们显示在 tableView 中。 我一直在寻找这样的问题，但是那里显示的代码似乎有点旧，并且没有真正起作用。我怎么做？ tableView 应该能够显示标题、开始和结束日期。是否有可能在字符串数组中获得所有标题。开头和结尾一样吗？ 得到一些提示会很棒！

更新： 我在类外声明了变量。 现在我尝试了一个看起来像这样的代码，这要归功于我在这里得到的答案，但是我没有让单元格显示任何东西？！是的，我已经在模拟器上的工作日历中创建了一个 testEvent。

    override func viewDidAppear(animated: Bool) {

    let eventStore = EKEventStore()

    switch EKEventStore.authorizationStatusForEntityType(.Event) {
    case .Authorized:
        readEvents()
    case .Denied:
        print("Access denied")
    case .NotDetermined:

        eventStore.requestAccessToEntityType(.Event, completion: { (granted: Bool, NSError) -> Void in
            if granted {
                self.readEvents()

            }else{
                print("Access denied")
            }



        })
    default:
        print("Case Default")
    }
    self.tableView.reloadData()
}



func readEvents() {



    let eventStore = EKEventStore()
    let calendars = eventStore.calendarsForEntityType(.Event)

    for calendar in calendars {
        if calendar.source.title == "Work" {
            let oneMonthAgo = NSDate(timeIntervalSinceNow: -30*24*3600)
            let oneMonthAfter = NSDate(timeIntervalSinceNow: +30*24*3600)


            let predicate = eventStore.predicateForEventsWithStartDate(oneMonthAgo, endDate: oneMonthAfter, calendars: [calendar])

            var events = eventStore.eventsMatchingPredicate(predicate)

            for event in events {

                titles.append(event.title)
                startDates.append(event.startDate)
                endDates.append(event.endDate)


            }

        }
    }


}

// MARK: - Table view data source



override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    // #warning Incomplete implementation, return the number of rows
    return titles.count
}


override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath)


    cell.textLabel!.text = titles[indexPath.row]
    cell.detailTextLabel!.text = "From: \(startDates[indexPath.row]) Until: \(endDates[indexPath.row])"
    // Configure the cell...

    return cell
}

Answer 1

你可以试试这样的

import EventKit

var titles : [String] = []
var startDates : [Date] = []
var endDates : [Date] = []

var store = EKEventStore()

let calendars = store.calendars(for: .event)

for calendar in calendars {
    if calendar.title == "Work" {
        let oneMonthAgo = Date(timeIntervalSinceNow: -30*24*3600)
        let oneMonthAfter = Date(timeIntervalSinceNow: 30*24*3600)
        let predicate =  store.predicateForEvents(withStart: oneMonthAgo, end: oneMonthAfter, calendars: [calendar])
        
        let events = store.events(matching: predicate)
        
        for event in events {
            titles.append(event.title)
            startDates.append(event.startDate)
            endDates.append(event.endDate)
        }
    }
}

（使用 Swift 5 API 更新）

Answer 2

func fetchEventsFromCalendar() -> Void {
    let status = EKEventStore.authorizationStatus(for: EKEntityType.event)
    
    switch (status) {
    case .notDetermined:
        requestAccessToCalendar()
    case .authorized:
        self.fetchEventsFromCalendar(calendarTitle: "Calendar")
        break
    case .restricted, .denied: break
        
    }
}


func requestAccessToCalendar() {
    
    eventStore.requestAccess(to: EKEntityType.event) { (accessGranted, error) in
        
        self.fetchEventsFromCalendar(calendarTitle: "Calendar")
        
    }
    
}


// MARK: Fetech Events from Calendar
func fetchEventsFromCalendar(calendarTitle: String) -> Void {
    
    //PGAEventsCalendar
    for calendar:EKCalendar in calendars! {
        
        if calendar.title == calendarTitle {
        
        let selectedCalendar = calendar
        let startDate = NSDate(timeIntervalSinceNow: -60*60*24*180)
        let endDate = NSDate(timeIntervalSinceNow: 60*60*24*180)
        let predicate = eventStore.predicateForEvents(withStart: startDate as Date, end: endDate as Date, calendars: [selectedCalendar])
        addedEvents = eventStore.events(matching: predicate) as [EKEvent]
        
        print("addedEvents : \(addedEvents)")
        
        }
    }
    
}

确保给出正确的日历标题，因为不同的日历有不同的事件列表，在我的情况下，标题为“日历”的日历具有所需的事件列表，然后再进行检查：

if calendar.title == calendarTitle {

我的第一个列表被其他日历的列表覆盖，所以我过去只获得与我不相关的少数事件。

Answer 3

Swift 3.0

let eventStore = EKEventStore()
let calendars = eventStore.calendars(for: .event)

for calendar in calendars {
    if calendar.title == "Work" {

        let oneMonthAgo = NSDate(timeIntervalSinceNow: -30*24*3600)
        let oneMonthAfter = NSDate(timeIntervalSinceNow: +30*24*3600)

        let predicate = eventStore.predicateForEvents(withStart: oneMonthAgo as Date, end: oneMonthAfter as Date, calendars: [calendar])

        let events = eventStore.events(matching: predicate)

        for event in events {
            titles.append(event.title)
            startDates.append(event.startDate as NSDate)
            endDates.append(event.endDate as NSDate)
        }
    }
}