I'm trying to find a way to retrieve the email account associated to calendar events on the Mac. Is there a way to do that? I tried looking in to the EKEvent object and it does not indicate the email account. I also tried looking in to the ACAccountStore.

We use Eventkit Framework to synchronize the meeting calendar to the system calendar, read the System Calendar with -[EKEventStore calendarsForEntityType:], Use - [EKEventStore saveEvent: span: commit: error:] wrote system calendar. This usage currently triggers the Contacts Permission Alert on a user. Through the log, we identified no use - [CNContactStore requestAccessForEntityType: completionHandler:] and Contacts API.

on iOS16.4, if try to add EKAttendee on EKEvent, it will cause app crash; this can not reproduce on iOS14.5/iOS15.7 etc low version. Add Main example Attendee code: Class className = NSClassFromString(@"EKAttendee"); NSMutableArray *attendeessystem = [NSMutableArray new]; for(int i=0; I<1;i++){ id attendee = [className new]; [attendee setValue:@"test" forKey:@"firstName"]; [attendee setValue:@"hihi" forKey:@"lastName"]; [attendee setValue:@"test@outlook.com" forKey:@"emailAddress"]; [attendeessystem addObject:attendee]; } if([attendeessystem count]>0) { [calendarEvent setValue:attendeessystem forKey:@"attendees"]; } crash log: *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSDictionaryM setObject:forKeyedSubscript:]: key cannot be nil' *** First throw call stack: