XMPPFramework(五)消息列表

XMPPMessageArchivingCoreDataStorage *messageArchivingCoreDataStorage = [XMPPMessageArchivingCoreDataStorage sharedInstance];
self.messageArchiving = [[XMPPMessageArchiving alloc] initWithMessageArchivingStorage:messageArchivingCoreDataStorage dispatchQueue:dispatch_get_main_queue()];
[self.messageArchiving activate:self.stream];
self.managedObjectContext = [messageArchivingCoreDataStorage mainThreadManagedObjectContext];