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保存时的 eventIdentifier 无法使用 eventIdentifier 获取事件。

因此，即使我们有它的 eventIdentifier，我们也无法以编程方式更新 EKEvent

在苹果提供的[SimpleEKDemo][1]中

在 EKEventEditViewDelegate 方法上记录 eventIdentifier

- (void)eventEditViewController:(EKEventEditViewController *)controller
didCompleteWithAction:(EKEventEditViewAction)action {

NSError *error = nil;

EKEvent *thisEvent = controller.event;

switch (action) {
case EKEventEditViewActionCanceled:
// Edit action canceled, do nothing.
break;

case EKEventEditViewActionSaved:
// When user hit "Done" button, save the newly created event to the event store,
// and reload table view.
// If the new event is being added to the default calendar, then update its
// eventsList.
if (self.defaultCalendar ==  thisEvent.calendar) {

[self.eventsList addObject:thisEvent];
}

[controller.eventStore saveEvent:controller.event span:EKSpanThisEvent error:&error];
NSLog(@"thisEvent.id = %@", thisEvent.eventIdentifier);
[self.tableView reloadData];
break;

case EKEventEditViewActionDeleted:
// When deleting an event, remove the event from the event store,
// and reload table view.
// If deleting an event from the currenly default calendar, then update its
// eventsList.
if (self.defaultCalendar ==  thisEvent.calendar) {
[self.eventsList removeObject:thisEvent];
}
[controller.eventStore removeEvent:thisEvent span:EKSpanThisEvent error:&error];
[self.tableView reloadData];
break;

default:
break;
}
// Dismiss the modal view controller
[controller dismissModalViewControllerAnimated:YES];

}

在设备上运行应用程序，我们将获得如下事件标识符：

eventidons保存 = 3CB60848-6CCA-43BF-B2C6-9EB9F5CFBBB7:C6CDE9DAA864420BA9A2E02CD886369700000000000000000000000000000000

在下次运行时使用事件标识符获取事件

EKEventStore *eventStore1 = [[EKEventStore alloc] init];

EKEvent *event1  = [eventStore1 eventWithIdentifier: eventidonsave ];
if(event1){
      NSLog(@"event1 id = %@", event1.eventIdentifier);
}else{
      NSLog(@"Not Found");
}

我们将得到“未找到”。

在获取事件的位置记录事件 ID，然后再次运行应用程序

- (NSArray *)fetchEventsForToday {
    ....
    ....



    for(EKEvent *eachEvent in events){

        NSLog(@"eachEvent.id = %@", eachEvent.eventIdentifier);
    }
}

we can see we are getting a different eventIdentifier like 3CB60848-6CCA-43BF-B2C6-9EB9F5CFBBB7:040000008200E00074C5B7101A82E00800000000646C6F747573C3010000000000000000100000000DA068F782418C4880257958003F776C

这与“eventidonsave”不同

大家好，感谢阅读。它得到了解决。上面的代码（不是经过编辑的）工作正常。我想问题是，在这一行之前记录了 eventid “[controller.eventStore saveEvent:..”

NO 只是在保存后移动到。并且似乎没问题。

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1 回答 1

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您需要先保存 EKEvent，然后获取其标识符。在您不保存事件之前，它将为您提供空值。 [self.eventStore saveEvent:event span: EKSpanFutureEvents error:&error];

于 2013-06-26T09:30:42.243 回答