How to accept/decline EKEvent invitation?

Question

I would like to allow my users to accept/decline a meeting invitation within my app.

I think what I need is to update somehow the EKParticipantStatus but it looks l

Answer 1

To allow the user to create, edit, or delete events, use the EKEventEditViewDelegate protocol.

let eventController = EKEventViewController()
guard let eventWithIdentifier = MeetingsFetcher.eventStoreClass.event(withIdentifier: meeting.UUID) else {
                return nil
            }
eventController.delegate = self
eventController.event = eventWithIdentifier
eventController.editViewDelegate = self
...

CalendarViewController class must conform to the EKEventEditViewDelegate protocol and must implement the eventEditViewController method to dismiss the modal view controller as shown below:

func eventEditViewController(_ controller: EKEventEditViewController, 
             didCompleteWith action: EKEventEditViewAction) {

    switch (action) {
        case EKEventEditViewActionCanceled:
        case EKEventEditViewActionSaved:
        ...
    }

}