ios - "[EKObjectID entityName]"崩溃

Question

我们在野外遇到过这种崩溃，当然我们不能在本地进行 repo 。它似乎只发生在 ios 7 上。它是一个 NSInternalInconsistencyException 的事实告诉我们这是一个内部 NSAssertion 错误。任何防止这种情况发生的想法都将不胜感激。

这是堆栈跟踪:

Thread : Fatal Exception: NSInternalInconsistencyException, 
Unknown entity type while trying to create an object ID

0  CoreFoundation                 0x2d69bf4b __exceptionPreprocess + 130
1  libobjc.A.dylib                0x37a2b6af objc_exception_throw + 38
2  CoreFoundation                 0x2d69be25 +[NSException raise:format:]
3  Foundation                     0x2e043fe3 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 90
4  EventKit                       0x2ddf2e2b -[EKObjectID entityName] + 202
5  EventKit                       0x2ddf2c65 -[EKEventStore _addFetchedObjectWithID:] + 56
6  EventKit                       0x2ddf2c0d __78-[EKEventStore registerFetchedObjectWithID:withDefaultLoadedProperties:inSet:]_block_invoke + 80
7  libdispatch.dylib              0x37f0ed07 _dispatch_client_callout + 22
8  libdispatch.dylib              0x37f20e73 _dispatch_barrier_sync_f_invoke + 26
9  EventKit                       0x2ddf2b05 -[EKEventStore registerFetchedObjectWithID:withDefaultLoadedProperties:inSet:] + 156
10 EventKit                       0x2ddfa371 __41-[EKPredicateSearch startWithCompletion:]_block_invoke + 652
11 EventKit                       0x2ddfa001 -[EKDaemonConnection _processReplyWithID:data:finished:] + 264
12 EventKit                       0x2ddf9ef3 CADReceiveReply + 98
13 EventKit                       0x2ddf9e5f _XReply + 102
14 EventKit                       0x2ddf9dd5 ClientCallbacks_server + 64
15 libdispatch.dylib              0x37f11a9d dispatch_mig_server$VARIANT$up + 312
16 EventKit                       0x2ddf9d6d __43-[EKDaemonConnection initWithOptions:path:]_block_invoke16 + 40
17 libdispatch.dylib              0x37f0f057 _dispatch_source_invoke$VARIANT$up + 258
18 libdispatch.dylib              0x37f218f9 _dispatch_root_queue_drain + 76
19 libdispatch.dylib              0x37f21b79 _dispatch_worker_thread2 + 56
20 libsystem_pthread.dylib        0x38050dbf _pthread_wqthread + 298
21 libsystem_pthread.dylib        0x38050c84 start_wqthread + 8

Answer 1

这个错误的原因似乎与我们试图在我们的应用程序中获取多少事件有关。这是我对苹果错误报告(15424747)的回复。

当我们的应用程序确实对具有大范围日期的 eventStore 进行谓词时，似乎会引入此错误。这是代码:

NSPredicate *predicate = [self.eventStore predicateForEventsWithStartDate:startDate   endDate:endDate calendars:nil]; 
if (!self.masterListSortDescriptor) {    
    self.masterListSortDescriptor = [NSSortDescriptor sortDescriptorWithKey:@"startDate" ascending:YES]; 
}
NSArray *result = [[self.eventStore eventsMatchingPredicate:predicate] sortedArrayUsingDescriptors:@[self.masterListSortDescriptor]];

如果开始日期 = 今天 - 1 年且结束日期 = 今天 + 2 年，则此代码块将失败。我们通过将范围缩小到 startDate = Today - 6 months 和 endDate = Today + 1 year 来“解决”这个问题，并且这个错误从我们的崩溃日志中消失了。