0
我有一個核心數據對象「實體」有2個字段 - 「名稱」(一個NSString *)和「類型」(一個EntityType)。 EntityType是使用1個字段名稱(NSString *)的另一個核心數據。
我創建並使用在功能上與下面的代碼相似的代碼刪除一個實體對象 -iphone核心數據刪除導致崩潰
Entity *e1 = [NSEntityDescription insertNewObjectForEntityName:"@Entity" inManagedObjectContext: context]
EntityType *type = [NSEntityDescription insertNewObjectForEntityName:"@EntityType" inManagedObjectContext: context]
e1.type = type;
現在我刪除的實體對象無需給予任何值或保存到持久性存儲。
if([e1.name length] == 0) {
[context deleteObject:e1];
NSError *nil;
if(![context:save &error] {
// log error
}
}
在這一點上,我看到一個崩潰,當我嘗試刪除並保存對象。 (由於未捕獲的異常 'NSRangeException' 原因終止:[NSCFArray removeObjectAtIndex]:索引(0)超過界限(0)]
任何指針/建議讚賞
這裏是被請求的堆棧跟蹤 -
#0 0x3266bdf4 in objc_exception_throw()
#1 0x32d73b32 in +[NSException raise:format:arguments:]()
#2 0x32d73ad2 in +[NSException raise:format:]()
#3 0x33f4a710 in _NSArrayRaiseBoundException()
#4 0x33f7ba3c in -[NSCFArray removeObjectAtIndex:]()
#5 0x30537dc6 in -[NSFetchedResultsController(PrivateMethods) _removeObjectInFetchedObjectsAtIndex:]()
#6 0x3053b50a in -[NSFetchedResultsController(PrivateMethods) _postprocessDeletedObjects:]()
#7 0x3053aa9a in -[NSFetchedResultsController(PrivateMethods) _managedObjectContextDidChange:]()
#8 0x33f765d8 in _nsnote_callback()
#9 0x32d9e510 in _CFXNotificationPostNotification()
#10 0x33f741b2 in -[NSNotificationCenter postNotificationName:object:userInfo:]()
#11 0x304b4388 in -[NSManagedObjectContext(_NSInternalNotificationHandling) _postObjectsDidChangeNotificationWithUserInfo:]()
#12 0x3050768a in -[NSManagedObjectContext(_NSInternalChangeProcessing) _createAndPostChangeNotification:withDeletions:withUpdates:withRefreshes:]()
#13 0x3049c2b0 in -[NSManagedObjectContext(_NSInternalChangeProcessing) _processRecentChanges:]()
#14 0x304cb186 in -[NSManagedObjectContext save:]()
#15 0x00006d5a in -[MyAppViewController goToMain] (self=0x11b730, _cmd=0x174b3) at /Users/Me/Projects/MyApp/Classes/MyAppViewController.m:611
2010-09-15 17:37:10.053 MyApp[1273:207] *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[NSCFArray removeObjectAtIndex:]: index (0) beyond bounds (0)'
2010-09-15 17:37:10.066 MApp[1273:207] Stack: (
853417245,
845594132,
852966195,
852966099,
............
.............
請添加崩潰堆棧跟蹤 – 2010-09-15 06:48:50
添加堆棧跟蹤 – 2010-09-15 12:22:39