iOS：错误域= NSCocoaErrorDomain代码= 132001′ – 保存：在上下文中止’使用后台更新数据库coredata /推送通知
当我尝试使用该命令在后台通过推送通知使用coreData更新我的数据库时：
if (![context save:&error]) { 有一条错误消息无法更新从未插入的对象 。 我确切地知道，当我在应用程序处于活动状态时，它运行良好，但是当我在后台使用它时，它不起作用（ Error Domain = NSCocoaErrorDomain Code = 134030 ）。
- (void)parseAndAddLovAll:(NSMutableArray*)responseArray toArray:(NSMutableArray*)destinationArray { NSError *error; DB_ListOfValue_manage *elements_to_store = [[DB_ListOfValue_manage alloc] init]; NSManagedObjectContext * context = [elements_to_store managedObjectContext]; for (int index=0; index < [responseArray count]; index++) { NSDictionary * responseArray2 = [[NSDictionary alloc] initWithDictionary:responseArray[index]]; NSString * table_to_store = [[NSString alloc] initWithString:[responseArray2 objectForKey:@"table"]]; NSArray * lignes = [[NSArray alloc] initWithObjects:[responseArray2 objectForKey:@"lignes"], nil]; id value; // Check if LOV table or contact table if ((([@"Table_contact" compare:table_to_store])!=NSOrderedSame)&& (([@"Table_event" compare:table_to_store])!=NSOrderedSame)) { for (NSDictionary * item in lignes[0]) { value = [item objectForKey:@"codeevent"]; if ([value isEqualToNumber:[NSNumber numberWithInt:EVENT_ID]]) { elements_to_store = (DB_ListOfValue_manage*)[NSEntityDescription insertNewObjectForEntityForName:table_to_store inManagedObjectContext:context]; elements_to_store.code_event = [value isKindOfClass:[NSNull class]] ? @"" : value; value = [item objectForKey:@"id"]; elements_to_store.id = [value isKindOfClass:[NSNull class]] ? @"" : value; if (![context save:&error]) { #ifdef DEBUG NSLog(@"Whoops, couldn't save: %@", [error localizedDescription]); #endif } else{ #ifdef DEBUG NSLog(@"Data saved to DB, table %@ %@ %@", table_to_store, elements_to_store.label1, elements_to_store.label2); #endif } } } } } }
消息错误完成：
Error Domain=NSCocoaErrorDomain Code=132001 "(null)" UserInfo={message=attempt to recursively call -save: on the context aborted, stack trace=( 0 CoreData 0x00000001863b322c + 156 1 Formbox_Renault_ePrix_Game 0x000000010022b5e4 -[ListOfValueSync parseAndAddLovAll:toArray:] + 4356 2 Formbox_Renault_ePrix_Game 0x0000000100229140 -[ListOfValueSync getAllListOfValueAll] + 748 3 Formbox_Renault_ePrix_Game 0x00000001001afbc8 __23-[ViewController sync:]_block_invoke.395 + 104 4 libdispatch.dylib 0x000000010153d2cc _dispatch_call_block_and_release + 24 5 libdispatch.dylib 0x000000010153d28c _dispatch_client_callout + 16 6 libdispatch.dylib 0x000000010154bf80 _dispatch_queue_serial_drain + 696 7 libdispatch.dylib 0x00000001015407ec _dispatch_queue_invoke + 332 8 libdispatch.dylib 0x000000010154cf6c _dispatch_root_queue_drain_deferred_wlh + 428 9 libdispatch.dylib 0x0000000101554020 _dispatch_workloop_worker_thread + 652 10 libsystem_pthread.dylib 0x000000018380ef1c _pthread_wqthread + 932 11 libsystem_pthread.dylib 0x000000018380eb6c start_wqthread + 4 )} (lldb)
如何在后台进程中使用coredata更新我的数据库？
你必须使用dispatch_async
dispatch_async(dispatch_get_main_queue(), ^{