ios - defaultCalendarForNewEvents failed

Question

When I try to call [newEventStore defaultCalendarForNewEvents], it returns an error message says:

[707:907] defaultCalendarForNewEvents failed: Error Domain=EKCADErrorDomain Code=1013 "The operation couldn’t be completed. (EKCADErrorDomain error 1013.)"
[707:907] Error!Failed to save appointment. Description:Error Domain=EKErrorDomain Code=1 "No calendar has been set." UserInfo=0x1fc679f0 {NSLocalizedDescription=No calendar has been set.}

The app runs for a long time. The problem came to me first time. The phone runs IOS6 Beta4. model is iphone 4. Is there anyone knows when the defaultCalendarForNewEvents method will get failed? I can not get any useful information from googling.

Answer 1

On iOS6, Apple introduced a new privacy control that allows the user to control the accessibility of contacts and calenders for each app. So, on the code side, you need to add some way to request the permission. In iOS5 or before, we can always call

EKEventStore *eventStore = [[[EKEventStore alloc] init] autorelease];
if ([eventStore respondsToSelector:@selector(requestAccessToEntityType:completion:)]) {
    // iOS 6 and later
    [eventStore requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error) {
        if (granted) {
            // code here for when the user allows your app to access the calendar
            [self performCalendarActivity:eventStore];
        } else {
            // code here for when the user does NOT allow your app to access the calendar
        }
    }];
} else {
    // code here for iOS < 6.0
    [self performCalendarActivity:eventStore];
}