ios从服务器拿到历史记录导入demo的数据库显示问题

给message.from   和message.to  赋值

你拉取的你们自己的服务器上的消息，那么你接收和发送是怎么写的啊

拉取的你们自己的服务器上的消息，插到数据库，插入是用这样的方法，然后就用你们demo的方法读取数据库
 //判断消息的类型

    if([dict[@"msg_type"]isEqualToString:@"txt"])

    {

        //插入文字消息

        EMChatText *txt = [[EMChatText alloc] initWithText:dict[@"msg"]];

        EMTextMessageBody *body = [[EMTextMessageBody alloc] initWithChatObject:txt];

       // EMMessage *messagetext = [[EMMessage alloc] initWithReceiver:_conversation.chatter bodies:@[body]];

        EMMessage *messagetext = [[EMMessage alloc] initMessageWithID:dict[@"msg_id"] sender:dict[@"from_user"] receiver:_chatter bodies:@[body]];

        DLog(@"谁发的消息==%@==消息的内容==%@",_chatter,txt);

        messagetext.isReadAcked = YES;

        messagetext.isAcked = NO;

        messagetext.isReadAcked = NO;

        messagetext.isRead = YES;

        messagetext.isGroup = self.isChatGroup;

        messagetext.timestamp = [dict[@"timestamp"] longLongValue];

        messagetext.conversationChatter = _chatter;

        messagetext.messageType = eConversationTypeGroupChat;// 设置为群聊消息

        messagetext.deliveryState = eMessageDeliveryState_Delivered;

       [[EaseMob sharedInstance].chatManager insertMessageToDB:messagetext append2Chat:NO];

        

        




        

    }

    else if ([dict[@"msg_type"]isEqualToString:@"img"])

    {

        //插入图片消息体

        NSDictionary *imageDic = @{EMMessageBodyAttrKeySecret:dict[@"secret"],

                                   EMMessageBodyAttrKeySize:@{EMMessageBodyAttrKeySizeWidth:@laznrbfe,EMMessageBodyAttrKeySizeHeight:@1136},

                                   EMMessageBodyAttrKeyFileName:dict[@"filename"],

                                   EMMessageBodyAttrKeyType:EMMessageBodyAttrTypeImag,

                                   EMMessageBodyAttrKeyUrl:dict[@"url"],

                                   EMMessageBodyAttrKeyFileLength:@178212};

        EMImageMessageBody *imageBody = [EMImageMessageBody imageMessageBodyFromBodyDict:imageDic forChatter:_chatter];

        EMMessage *image = [[EMMessage alloc] initMessageWithID:dict[@"msg_id"] sender:dict[@"from_user"] receiver:_chatter bodies:@[imageBody]];

        image.timestamp = [dict[@"timestamp"] longLongValue];

        image.isReadAcked = NO;

        image.isAcked = NO;

        image.deliveryState = eMessageDeliveryState_Delivered;

        image.isRead = YES;

        image.isGroup = self.isChatGroup;

        image.conversationChatter = _chatter;

        

        // [[EaseMob sharedInstance].chatManager insertMessageToDB:messagetext];

        [[EaseMob sharedInstance].chatManager insertMessageToDB:image append2Chat:YES];




    }
 
传递模型写这样判断
- (void)setMessageModel:(MessageModel *)model

{

   if (_messageModel.isSender)

    {

        NSArray *avate = [mUserDefaults objectForKey:hAvatar];

        NSString *str = [avate firstObject];

        [self.headImageView sd_setImageWithURL:[NSURL URLWithString:str]];

    }

    else

    {

        

        NSArray *arraySoce = [[DBManager shareManager] selectAppsById:messageModel.username];

        self.uid = messageModel.username;

        

        for (ChartModel *model in arraySoce)

        {

           

             [self.headImageView sd_setImageWithURL:[NSURL URLWithString:model.avatar] placeholderImage:[UIImage imageNamed:@"DefaultHeader"]];

            self.headImageView.userInteractionEnabled = YES;

            UITapGestureRecognizer *g = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapClickAction:)];

            [self.headImageView addGestureRecognizer:g];

            

            

        }

   }
 

请问是在插入数据库代码里写还是在设置模型那里写