我不断从 managedObjectContext 上的 save: 命令中得到崩溃。它甚至不满足 NSLog 语句,所以我看不到未解决的错误语句,所以我无法弄清楚问题可能是什么。它不会每次都发生,而只是偶尔发生。
这是代码(基本上是想增加一个计数器):
if ([[managedObject valueForKey:@"canSee"]boolValue]){
int read = [[managedObject valueForKey:@"timesRead"] intValue] +1;
[managedObject setValue:[NSNumber numberWithInt:read] forKey:@"timesRead"];
NSError *error;
if (![resultsController.managedObjectContext save:&error]) { //<-- crashes on this line!
NSLog(@"Unresolved Core Data Save error %@, %@", error, [error userInfo]);
exit(-1);
}
在控制台窗口中,我收到如下消息:
2010-08-20 08:12:20.594 AppName[23501:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFSet controllerWillChangeContent:]: unrecognized selector sent to instance 0xe54f560'
或这个:
2010-08-20 08:12:20.594 AppName[23501:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFSet controllerWillChangeContent:]: unrecognized selector sent to instance 0xe54f560'
甚至这个:
2010-08-19 23:09:59.337 AppName[761:307] Serious application error. Exception was caught during Core Data change processing. This is usually a bug within an observer of NSManagedObjectContextObjectsDidChangeNotification. -[UITableViewLabel controllerWillChangeContent:]: unrecognized selector sent to instance 0x7f0a860 with userInfo (null)
2010-08-19 23:09:59.356 AppName[761:307] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UITableViewLabel controllerWillChangeContent:]: unrecognized selector sent to instance 0x7f0a860'
然后它在第一次抛出时显示调用堆栈,然后是通知(在抛出“NSException”实例后终止调用,“[切换到进程 23501]”和“程序收到信号:“SIGABRT”。
我认为这个问题与 CoreData 有关,但我不确定。我已经清理了我的构建和目标,但似乎没有帮助。我试过锁定/解锁 ManagedObjectContext 并没有帮助。
任何关于从哪里开始寻找解决方案的想法将不胜感激!