macos - 在 OS X 上创建时出现 EKReminder 错误 : No calendar has been set

Question

我有一段代码尝试使用 OS X 10.8 及更高版本中的 EventKit 框架保存通用提醒。这是我的代码片段:

NSLog(@"Creating reminder.");
EKEventStore *eventStore = [[EKEventStore alloc] initWithAccessToEntityTypes:EKEntityMaskReminder];
NSLog(@"Auth status: %lu", [EKEventStore authorizationStatusForEntityType:EKEntityTypeReminder]);

[eventStore requestAccessToEntityType:EKEntityTypeReminder completion:^(BOOL granted, NSError *error) {
    NSLog(@"Granted: %d Error: %@", granted, error);
    if (granted) {
        EKReminder *reminder = [EKReminder reminderWithEventStore:eventStore];
        reminder.title = @"My Reminder";
        EKCalendar *reminderCalendar = [EKCalendar calendarForEntityType:EKEntityTypeReminder eventStore:eventStore];
        NSLog(@"Using EKCalendar: %@", reminderCalendar);
        reminder.calendar = reminderCalendar;

        NSError *commitError = nil;
        if (![eventStore saveReminder:reminder commit:YES error:&commitError] || commitError) {
            NSLog(@"An error occurred committing the reminder: %@", commitError);
        } else {
            NSLog(@"Reminder created successfully.");
        }
    }
}];

这是我看到的输出:

2014-01-08 19:56:21.182 MyApp[6073:303] Creating reminder.
2014-01-08 19:56:21.358 MyApp[6073:303] Auth status: 3
2014-01-08 19:56:21.358 MyApp[6073:3423] Granted: 1 Error: (null)
2014-01-08 19:56:21.359 MyApp[6073:3423] Using EKCalendar: EKCalendar <0x9c430>, calendarIdentifier:9BD66DA9-014D-4918-849A-1D6763994511, allowEvents:0, allowReminders:1, allowsContentModifications:1, isSubscribed:0, isDeletable:1, isRenameable:1, isShareable:0, defaultOrganizerIsMeForNewItems:0
2014-01-08 19:56:21.366 MyApp[6073:3423] An error occurred committing the reminder: Error Domain=EKErrorDomain Code=1 "No calendar has been set." UserInfo=0x60000067d900 {NSLocalizedDescription=No calendar has been set.}

但是，尽管出现错误消息，EKCalendar 已成功创建/访问，并在 EKReminder 对象上进行设置。

我发现的唯一其他类似资源是在 iOS 上使用 EventKit 时发生的，其中获取访问权限的方法略有不同。

根据此 Apple 文档:https://developer.apple.com/library/ios/documentation/DataManagement/Conceptual/EventKitProgGuide/ReadingAndWritingReminders/ReadingAndWritingReminders.html

You can create reminders using the reminderWithEventStore: class method. The title and calendar properties are required. The calendar for a reminder is the list with which it is grouped.

但我一定做错了什么。在我的 App Sandbox/App Data 权限下，为了安全起见，我选择了 Calendar 和 Contacts，但该错误似乎与权限无关。

Answer 1

而不是使用:

EKCalendar *reminderCalendar = [EKCalendar calendarForEntityType:EKEntityTypeReminder eventStore:eventStore];
NSLog(@"Using EKCalendar: %@", reminderCalendar);
reminder.calendar = reminderCalendar;

我能够使用以下方法成功创建 EKReminder:

reminder.calendar = [eventStore defaultCalendarForNewReminders];