Defaultcalendarfornewevents Failed

defaultCalendarForNewEvents is defined as optional however can't use optional binding to check if it's nil

I asked this question at the Swift discussion forum at swift.org and got a response. So as per the response, 'defaultCalendarForNewEvents' was marked non-optional in Swift 3 by accident and that was fixed in Swift 4. That's why there was a discrepancy: documentation showing declaration in Swift 4 but optional binding failing as I'm on Swift 3. Hope this helps someone who is having the same issue.

I was also told that this issue was not release-noted as it was a minor update.

Error getting default calendar for new events: Error Domain=EKCADErrorDomain Code=1013 (null)

i use your code i add added two properties in info.plist NSCalendarsUsageDescription NSRemindersUsageDescription

then I NSLog(@"eventStore=:%@", eventStore); the result is eventStore=:<EKEventStore: 0x17418ce60>

my code:

- (void)viewDidLoad {
 [super viewDidLoad];
NSDateFormatter *dateFormatter = [NSDateFormatter new];
[dateFormatter setDateFormat:@"yyyy-MM-dd hh:mm:ss"];

NSString *dateString = [dateFormatter stringFromDate:[NSDate date]];
NSDate *dateFromString = [dateFormatter dateFromString:dateString];
[dateFromString dateByAddingTimeInterval:-60*30];

EKEventStore *eventStore = [[EKEventStore alloc] init];
[eventStore requestAccessToEntityType:EKEntityTypeReminder completion:^(BOOL granted, NSError * _Nullable error) {
    if (granted) {
        EKEvent *event = [EKEvent eventWithEventStore:eventStore];
        event.title = @"Event Title";
        event.startDate = [NSDate date]; //today
        event.endDate = [event.startDate dateByAddingTimeInterval:60*60];  //set 1 hour meeting
        event.calendar = [eventStore defaultCalendarForNewEvents];
        NSError *err = nil;
        [eventStore saveEvent:event span:EKSpanThisEvent commit:YES error:&err];

    }}];

  NSLog(@"eventStore=:%@", eventStore);
}

iOS: EKEventStore sources / defaultCalendarForNewEvents / calendarsForEntityType all return nothing AFTER authorization

OK, it turns out there was a small line of code in a viewDidLoad that was before the [eventStore requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error code and that tried to access the eventStore. It was superfluous and did not need to be happening and I had not noticed it. Once I removed this code the stuff now works, so it does go back to needing to authorize, as even after authorization, the eventStore was already "bad" due to this previous access.

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