相关疑难解决方法(0)

我在服务器上有一些记录,当前台应用服务器的背景将发送所有记录,而从客户端我将所有数据保存到coredata.保存时我需要检查这些数据是否已经存在,有时我需要在保存之前从db中获取一些数据,但在这段时间我的应用程序被冻结,并且只有在完成所有更新和节省后才能正常工作.

profiler:https://www.dropbox.com/s/epw1939vxakxt7k/Instruments5.trace.zip？ dl = 0

保存到DB

     -(void)updateThreadEntityWithSyncDetails:(NSMutableDictionary *)inDictionary
  {

 NSString *loginUser=[[NSUserDefaults standardUserDefaults] valueForKey:@"currentUser"];

 AppDelegate *sharedDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
NSManagedObjectContext *context = [sharedDelegate managedObjectContext];

  //    NSManagedObjectContext *writerContext = [[NSManagedObjectContext alloc] initWithConcurrencyType:NSPrivateQueueConcurrencyType];
  //   [writerContext setPersistentStoreCoordinator:[sharedDelegate persistentStoreCoordinator]];
 ////    
  ////    // create main thread MOC
 //    context = [[NSManagedObjectContext alloc]        initWithConcurrencyType:NSMainQueueConcurrencyType];
    //    context.parentContext = writerContext;
  ////

NSManagedObjectContext *contextforThread = [[NSManagedObjectContext alloc] initWithConcurrencyType:NSPrivateQueueConcurrencyType];

contextforThread.parentContext = context;

[contextforThread performBlock:^{




NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
[fetchRequest setReturnsObjectsAsFaults:NO];
NSEntityDescription *entity = [NSEntityDescription …