无法在iOS 6中保存EKReminder

概述我试图从我的应用程序保存/检索提醒,但由于某种原因,EKReminder似乎没有被保存.这是我的代码： EKEventStore * _eventStore = [[EKEventStore alloc] init];[_eventStore requestAccessToEntityType:EKEntityTypeReminder completion:^(BOOL granted, NSE 我试图从我的应用程序保存/检索提醒,但由于某种原因,EKReminder似乎没有被保存.这是我的代码：

EKEventStore * _eventStore = [[EKEventStore alloc] init];[_eventStore requestAccesstoEntityType:EKEntityTypeReminder completion:^(BOol granted,NSError *error) {    //create a new calendar for reminders.    EKCalendar *calendar = [EKCalendar calendarForEntityType:EKEntityTypeReminder eventStore:_eventStore];    EKSource *localSource = nil;    for (EKSource *source in _eventStore.sources)        if (source.sourceType == EKSourceTypeLocal)        {            localSource = source;            break;        }    calendar.source = localSource;    self.calendarIDentifIEr = calendar.calendarIDentifIEr;    EKReminder *reminder = [EKReminder reminderWithEventStore:_eventStore];    reminder.calendar = calendar;    reminder.Title = @"Test Reminder";    reminder.startDateComponents = [[NSCalendar currentCalendar] components:NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit fromDate:[NSDate date]];    reminder.completionDate = [NSDate dateWithTimeIntervalSinceNow:100];    EKAlarm *alarm = [EKAlarm alarmWithabsoluteDate:[NSDate dateWithTimeIntervalSinceNow:100]];    reminder.alarms = @[alarm];          NSError *errorOb = nil;    BOol saved = [_eventStore saveReminder:reminder commit:YES error:&errorOb];    if (saved) NSLog(@"Saved Reminder");    else NSLog(@"Failed to save reminder");}];

然后,我试图验证提醒实际上已被保存.我通过使用此代码来做到这一点：

nspredicate *predicate = [_eventStore predicateForRemindersInCalendars:nil];[_eventStore fetchRemindersMatchingPredicate:predicate completion:^(NSArray *reminders) {    for (EKReminder *reminder in reminders) {        NSLog(@"Reminder Title: %@",reminder.Title);    }}];

我的新提醒永远不会出现！

谁能告诉我我在做错了什么？

解决方法 您只需要调用-requestAccesstoEntityType：completion：如果授权状态是EKAuthorizationStatusNotDetermined.您可以使用[EKEventStore authorizationStatusForEntityType：]检查授权状态.

然后,只有在第一次调用-requestAccesstoEntityType：completion时才会调用完成块.在模拟器上它甚至不会被调用一次,因为在模拟器上你的应用程序已经可以访问.

EKEventStore * _eventStore = [[EKEventStore alloc] init];EKAuthorizationStatus authorizationStatus = [EKEventStore authorizationStatusForEntityType:EKEntityTypeReminder];if (authorizationStatus == EKAuthorizationStatusNotDetermined) {    [_eventStore requestAccesstoEntityType:EKEntityTypeReminder completion:^(BOol granted,NSError *error) {        if (granted) {            [self createNewReminder];        } else {            [self showNowAccessAlert];        }    }];} else {    if (authorizationStatus == EKAuthorizationStatusAuthorized) {        [self createNewReminder];    } else {        [self showNowAccessAlert];    }}

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