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问题:

I would be interested in knowing how to add a calendar event in the device, but using swift. I know there are some examples made in Objective-C, but at the moment nothing in swift. Many thanks.

回答1:

Swift 3.0 version

    let eventStore : EKEventStore = EKEventStore()

    // 'EKEntityTypeReminder' or 'EKEntityTypeEvent'

    eventStore.requestAccess(to: .event) { (granted, error) in

        if (granted) && (error == nil) {
            print("granted \(granted)")
            print("error \(error)")

            let event:EKEvent = EKEvent(eventStore: eventStore)

            event.title = "Test Title"
            event.startDate = Date()
            event.endDate = Date()
            event.notes = "This is a note"
            event.calendar = eventStore.defaultCalendarForNewEvents
            do {
                try eventStore.save(event, span: .thisEvent)
            } catch let error as NSError {
                print("failed to save event with error : \(error)")
            }
            print("Saved Event")
        }
        else{

            print("failed to save event with error : \(error) or access not granted")
        }
    }

Reference : https://gist.github.com/mchirico/d072c4e38bda61040f91

回答2:

Swift 3.0 compatible:

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 = endDate
            event.notes = description
            event.calendar = eventStore.defaultCalendarForNewEvents
            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?)
        }
    })
}

And also import EventKit

So you can easily call this method from everywhere:

addEventToCalendar(title: "Girlfriend birthday", description: "Remember or die!", startDate: NSDate(), endDate: NSDate())

If you prefer, you can put this method inside an utiliy class and define it as 'static'.

回答3:

You need to add "Privacy - Calendars Usage Description" to info.plist. Following code works with latest version of xcode and swift 3.

import EventKit
class EventHelper
{
    let appleEventStore = EKEventStore()
    var calendars: [EKCalendar]?
    func generateEvent() {
        let status = EKEventStore.authorizationStatus(for: EKEntityType.event)

        switch (status)
        {
        case EKAuthorizationStatus.notDetermined:
            // This happens on first-run
            requestAccessToCalendar()
        case EKAuthorizationStatus.authorized:
            // User has access
            print("User has access to calendar")
            self.addAppleEvents()
        case EKAuthorizationStatus.restricted, EKAuthorizationStatus.denied:
            // We need to help them give us permission
            noPermission()
        }
    }
    func noPermission()
    {
        print("User has to change settings...goto settings to view access")
    }
    func requestAccessToCalendar() {
        appleEventStore.requestAccess(to: .event, completion: { (granted, error) in
            if (granted) && (error == nil) {
                DispatchQueue.main.async {
                    print("User has access to calendar")
                    self.addAppleEvents()
                }
            } else {
                DispatchQueue.main.async{
                    self.noPermission()
                }
            }
        })
    }
    func addAppleEvents()
    {
        let event:EKEvent = EKEvent(eventStore: appleEventStore)
        event.title = "Test Event"
        event.startDate = NSDate() as Date
        event.endDate = NSDate() as Date
        event.notes = "This is a note"
        event.calendar = appleEventStore.defaultCalendarForNewEvents

        do {
            try appleEventStore.save(event, span: .thisEvent)
            print("events added with dates:")
        } catch let e as NSError {
            print(e.description)
            return
        }   
        print("Saved Event")
    }
}

回答4:

I was able to adjust this and eliminate the compiler error mentioned in the comments to the answers above (and a few others), as follows:

 var eventStore : EKEventStore = EKEventStore()

    // 'EKEntityTypeReminder' or 'EKEntityTypeEvent'

    eventStore.requestAccessToEntityType(EKEntityType.Event, completion: {
        (granted, error) in

        if (granted) && (error == nil) {
            print("granted \(granted)")
            print("error \(error)")

            var event:EKEvent = EKEvent(eventStore: eventStore)

            event.title = "Test Title"
            event.startDate = NSDate()
            event.endDate = NSDate()
            event.notes = "This is a note"
            event.calendar = eventStore.defaultCalendarForNewEvents

            eventStore.saveEvent(event, span: EKSpan.ThisEvent, error: nil)

            print("Saved Event")
        } 
    })

However, I still get the following error at the bottom regarding "EKSpan.ThisEvent" : Incorrect argument label in call (have ':span:error:', expected ':span:commit:').

I tried changing "error" to "commit," but it gave me a compiler error saying it expected a Bool instead of nil. It seems like a problem having to do with updates in swift syntax.

Edit: I ended up following this tutorial and was able to get it to work.

First, ask permission to access the calendar and (if that permission is granted) call a function to add the event.

var savedEventId : String = ""

func requestAccessPermission() {
    let eventStore = EKEventStore()

    let startDate = NSDate()
    let endDate = startDate.dateByAddingTimeInterval(60 * 60) // Ends one hour later

    if (EKEventStore.authorizationStatusForEntityType(.Event) != EKAuthorizationStatus.Authorized) {
        eventStore.requestAccessToEntityType(.Event, completion: {
        granted, error in
            self.createEvent(eventStore, title: "Test Title", startDate: startDate, endDate: endDate)
        })
    } else {
        createEvent(eventStore, title: "Test Title", startDate: startDate, endDate: endDate)
    }
}

The function that is called in the above code snippet to add the event:

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("Error Saving")
    }
}

回答5:

This was really slow on iOS 11.2 Xcode 9.2, so I modified Luca Davanzo's answer to use queues (works a lot faster):

func addEventToCalendar(title: String, description: String?, startDate: Date, endDate: Date, completion: ((_ success: Bool, _ error: NSError?) -> Void)? = nil) {
        DispatchQueue.global(qos: .background).async { () -> Void in
            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 = endDate
                    event.notes = description
                    event.calendar = eventStore.defaultCalendarForNewEvents
                    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?)
                }
            })
        }
    }