Modifying EKParticipants (attendees) in EventKit like Sunrise

Question

My goal is to add some invitees to an EKEvent. I\'ve looked into other questions like this, such as this one, but all say that it is essentially impossible to a

Answer 1

Swift version of rebello95's solution. I can confirm it works like a charm! I played around with the firstName and lastName properties but they do not seem to matter at all, so I left them out of my example. Only the emailAddress matters, which is matched against your contact list to display a full name in for example the native calendar app.

private func createEventWithAttendees() {
    let eventStore = EKEventStore()

    let calendars = eventStore.calendarsForEntityType(.Event)

    let event = EKEvent(eventStore: eventStore)
    event.title = "TEST EVENT"
    event.startDate = NSDate()
    event.endDate = NSDate().dateByAddingTimeInterval(60 * 60)
    event.calendar = calendars[0]

    var attendees = [EKParticipant]()
    for i in 0 ..< 5 {
        if let attendee = createParticipant(email: "test\(i)@email.com") {
            attendees.append(attendee)
        }
    }
    event.setValue(attendees, forKey: "attendees")

    try! eventStore.saveEvent(event, span: .ThisEvent)
}

private func createParticipant(email email: String) -> EKParticipant? {
    let clazz: AnyClass? = NSClassFromString("EKAttendee")
    if let type = clazz as? NSObject.Type {
        let attendee = type.init()
        attendee.setValue(email, forKey: "emailAddress")
        return attendee as? EKParticipant
    }
    return nil
}