ios - 即使 EKEvent.hasNotes 返回 YES，EKEvent.notes 也会返回 (null)

Question

我正在使用 Xcode 6.0.1，使用 Event Kit 制作测试应用。以下代码成功地填充了每个事件的标题，但即使 hasNotes 属性返回 YES，其注释也会返回为 (null)。而且，我可以在 iPhone 的默认日历应用程序上看到同一事件的注释。

我做错了什么？

- (void)viewDidLoad
{
    [super viewDidLoad];

    [eventStore requestAccessToEntityType:EKEntityTypeEvent
                               completion:^(BOOL granted, NSError *error) {
                                   dispatch_async(dispatch_get_main_queue(), ^{
                                       if (error)
                                       {
                                           NSLog(@" !! error");
                                           // display error message here
                                       }
                                       else if (!granted)
                                       {
                                           NSLog(@"Not Granted");
                                           // display access denied error message here
                                       }
                                       else
                                       {
                                           // access granted

                                           NSCalendar *calendar = [NSCalendar currentCalendar];
                                           // Create the start date components
                                           NSDateComponents *oneWeekAgoComponents = [[NSDateComponents alloc] init];
                                           oneWeekAgoComponents.day = -1;
                                           NSDate *oneWeekAgo = [calendar dateByAddingComponents:oneWeekAgoComponents toDate:[NSDate date] options:0];
                                           // Create the end date components
                                           NSDateComponents *oneMonthFromNowComponents = [[NSDateComponents alloc] init];
                                           oneMonthFromNowComponents.month = 1;
                                           NSDate *oneMonthFromNow = [calendar dateByAddingComponents:oneMonthFromNowComponents toDate:[NSDate date] options:0];

                                           // Create the predicate from the event store's instance method
                                           NSPredicate *predicate = [eventStore predicateForEventsWithStartDate:oneWeekAgo endDate:oneMonthFromNow calendars:nil];
                                           // Fetch all events that match the predicate
                                           _eventArray = [eventStore eventsMatchingPredicate:predicate];

                                           [self.tableView reloadData];

                                       }
                                   });
                               }];
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];

    EKEvent *event = [self.eventArray objectAtIndex:indexPath.row];
    cell.textLabel.text = event.title;

    if (event.hasNotes) {
        cell.detailTextLabel.text = event.notes;
    } else {
        cell.detailTextLabel.text = @"";
    }

    return cell;
}

Answer 1

我还没有完全解决它，但得到了一个线索。

NSArray *events = [eventStore eventsMatchingPredicate:predicate];

这个没有得到注释。因此，我通过执行以下操作来枚举返回的事件

 [eventStore enumerateEventsMatchingPredicate:predicate usingBlock:^(EKEvent *event, BOOL *stop) {
                                               NSLog(@"title: %@",event.title);
                                               NSLog(@"hasNotes: %s",event.hasNotes ? "YES":"NO");
                                               NSLog(@"notes: %@",event.notes);
                                               NSLog(@"-----");
                                               [_eventTitles addObject:event.title];
                                               [_eventTitles addObject:event.hasNotes ? event.notes : @""];
                                           }];

这个返回实际的笔记(空)。