【发布时间】：2010-03-14 23:46:18
【问题描述】：
编辑：可以从crashTest 下载一个显示崩溃的最小项目。它是通过在 XCode 中选择“基于核心数据的导航”项目模板并修改大概十行来创建的。
当一次添加一个部分和两个对象时，我的头发已经用完了。
崩溃发生在对 [managedObjectContext save:&error] 的调用内的例程结束时。
崩溃是NSArray 的越界异常：
Serious application error. Exception was caught during Core Data change processing: *** -[NSCFArray objectAtIndex:]: index (1) beyond bounds (1) with userInfo (null)
也可能相关，当异常发生时，我的获取结果控制器controllerDidChangeContent: 委托例程在调用堆栈中。它只是调用我的表格视图endUpdate 例程。
我现在没有想法了。我应该如何使用部分将多个项目插入到具有表视图的核心数据存储中？
这是调用堆栈：
#0 0x901ca4e6 in objc_exception_throw
#1 0x01d86c3b in +[NSException raise:format:arguments:]
#2 0x01d86b9a in +[NSException raise:format:]
#3 0x00072cb9 in _NSArrayRaiseBoundException
#4 0x00010217 in -[NSCFArray objectAtIndex:]
#5 0x002eaaa7 in -[UITableView(_UITableViewPrivate) _endCellAnimationsWithContext:]
#6 0x002def02 in -[UITableView endUpdates]
#7 0x00004863 in -[AirportViewController controllerDidChangeContent:] at AirportViewController.m:463
#8 0x01c43be1 in -[NSFetchedResultsController(PrivateMethods) _managedObjectContextDidChange:]
#9 0x0001462a in _nsnote_callback
#10 0x01d31005 in _CFXNotificationPostNotification
#11 0x00011ee0 in -[NSNotificationCenter postNotificationName:object:userInfo:]
#12 0x01ba417d in -[NSManagedObjectContext(_NSInternalNotificationHandling) _postObjectsDidChangeNotificationWithUserInfo:]
#13 0x01c03763 in -[NSManagedObjectContext(_NSInternalChangeProcessing) _createAndPostChangeNotification:withDeletions:withUpdates:withRefreshes:]
#14 0x01b885ea in -[NSManagedObjectContext(_NSInternalChangeProcessing) _processRecentChanges:]
#15 0x01bbe728 in -[NSManagedObjectContext save:]
#16 0x000039ea in -[AirportViewController populateAirports] at AirportViewController.m:112
这是例程的代码。我很抱歉，因为许多行可能无关紧要，但我宁愿在这方面犯错。调用[context save:&error]时发生崩溃：
- (void) insertObjects
{
NSManagedObjectContext *context = [fetchedResultsController managedObjectContext];
NSEntityDescription *entity = [[fetchedResultsController fetchRequest] entity];
NSManagedObject *newManagedObject = [NSEntityDescription insertNewObjectForEntityForName:[entity name] inManagedObjectContext:context];
// If appropriate, configure the new managed object.
[newManagedObject setValue:@"new airport1" forKey:@"name"];
[newManagedObject setValue:@"???" forKey:@"code"];
[newManagedObject setValue:@"new country" forKey:@"country_name"];
newManagedObject = [NSEntityDescription insertNewObjectForEntityForName:[entity name] inManagedObjectContext:context];
[newManagedObject setValue:@"new airport2" forKey:@"name"];
[newManagedObject setValue:@"???" forKey:@"code"];
[newManagedObject setValue:@"new country" forKey:@"country_name"];
// Save the context.
NSError *error = nil;
if (![context save:&error]) {
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
abort();
}
}
注意：这些部分由country_name 提供。此外，四个NSFetchedResultsControllerDelegate 例程由 XCode 记录和预设：
- (void)controllerWillChangeContent:(NSFetchedResultsController *)controller {
[self.tableView beginUpdates];
}
- (void)controller:(NSFetchedResultsController *)controller didChangeSection:(id <NSFetchedResultsSectionInfo>)sectionInfo
atIndex:(NSUInteger)sectionIndex forChangeType:(NSFetchedResultsChangeType)type
{
switch(type) {
case NSFetchedResultsChangeInsert:
[self.tableView insertSections:[NSIndexSet indexSetWithIndex:sectionIndex] withRowAnimation:UITableViewRowAnimationFade];
break;
// other cases omitted because not occurring in this crash
}
}
- (void)controller:(NSFetchedResultsController *)controller didChangeObject:(id)anObject
atIndexPath:(NSIndexPath *)indexPath forChangeType:(NSFetchedResultsChangeType)type
newIndexPath:(NSIndexPath *)newIndexPath
{
UITableView *tableView = self.tableView;
switch(type) {
case NSFetchedResultsChangeInsert:
[tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:newIndexPath] withRowAnimation:UITableViewRowAnimationFade];
break;
// other cases omitted because not occurring in this crash
}
}
- (void)controllerDidChangeContent:(NSFetchedResultsController *)controller {
[self.tableView endUpdates];
}
【问题讨论】：
标签： uitableview core-data crash