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?
最佳答案 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];
}
}