CoreData：错误：严重的应用程序错误。在核心数据更改处理期间捕获异常 [英] CoreData: error: Serious application error. Exception was caught during Core Data change processing

问题描述

您好我会崩溃，

当我试图插入1000条记录到db在后台，我得到以下例外：
CoreData：错误：严重的应用程序错误。在Core数据更改处理期间捕获到异常。

这通常是

when i'm trying to insert 1000 records into db in back ground, i'm getting following exception: CoreData: error: Serious application error. Exception was caught during Core Data change processing.
This is usually a bug within an observer of

NSManagedObjectContextObjectsDidChangeNotification. -[__NSCFSet addObject:]: attempt to insert nil with userInfo (null)2013-11-19 09:41:19.587 3pTalk[7487:907]

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFSet addObject:]: attempt to insert nil'

objexts

dispatch_queue_t myBackgroundQ = dispatch_queue_create("com.sample.addressbook", NULL);
// Could also get a global queue; in this case, don't release it below.
dispatch_time_t delay = dispatch_time(DISPATCH_TIME_NOW, NSEC_PER_SEC);
dispatch_after(delay, myBackgroundQ, ^(void){
    [self userAddressbook];
});
dispatch_release(myBackgroundQ);
[self performSelectorOnMainThread:@selector(startSyncLoader) withObject:nil waitUntilDone:YES];

推荐答案

不要访问同一个数据库线程（主，背景）同时与一个上下文。这不是建议。它会导致App Crash。

Dont access same Database(Persistent Store Coordinator) from 2 threads(Main,Background) simultaneously with one context. This is not recommended. it causes App Crash.

创建NSManagedContext对象并设置persistentstoreCoordinator。

create NSManagedContext Object and set persistentstoreCoordinator.

    dispatch_queue_t request_queue = dispatch_queue_create("com.xxx.ScsMethod", NULL);
    dispatch_async(request_queue, ^{
    NSPersistentStoreCoordinator *mainThreadContextStoreCoordinator = [context     persistentStoreCoordinator]; //
    NSManagedObjectContext *context = [[NSManagedObjectContext alloc] init]; // 
    [context setPersistentStoreCoordinator:mainThreadContextStoreCoordinator];}

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