Swift 4.0 Eventkit Cannot get calendars and events correctly

Question

I\'m trying to use Eventkit to access Mac Calendar. Access is successfully requested but I keep getting nil or an empty array of calendar or events, even though I have several c

Answer 1

Try this method

Create and Get Calendar

func getCalendar() -> EKCalendar? {
        let defaults = UserDefaults.standard
    
        if let id = defaults.string(forKey:"calendarID") {
            return eventStore.calendar(withIdentifier: id)
          } else {
            let calendar = EKCalendar(for: .event, eventStore: eventStore)
    
               calendar.title = "Calendar Title"
               calendar.cgColor = UIColor.blue
               calendar.source = self.eventStore.defaultCalendarForNewEvents!.source
    
             do {
                 try eventStore.saveCalendar(calendar, commit: true)
                 defaults.set(calendar.calendarIdentifier, forKey: "calendarID")
    
                 print("Created calander")
               } catch let error as NSError {
               print("failed to Create calendar with error : \(error)")
               }
            
    
              return calendar
          }
      }

Answer 2

After lots of trial and error, I found the answer.

You need to set the com.apple.security.personal-information.calendars key to YES in your entitlements file, even if your app is not sandboxed. There is a bug in Apple's implementation of EventKit that prevents your app getting access to calendars if it does not set this key, even if the sandbox is disabled.

Answer 3

I might be wrong but you are missing one parameter in your predicate you are passing in nil so there is nothing to sort essentially no output. Try changing your code to:

 let sources = eventStore.sources
    for source in sources{
        print(source.title)
        for calendar in source.calendars(for: .event){
            print(calendar.title)
        }
    }

    let calendars = eventStore.calendars(for: .event)
    let predicate = self.eventStore.predicateForEvents(withStart: startDate, end: endDate, calendars: calendars)  //change here
    let events = self.eventStore.events(matching: predicate)
    print(calendars)
    print(events)