iOS 融云设置聊天头像昵称

我是自己创建的数据库保存在本地

//任何消息都会先经过这个方法
- (void)onRCIMReceiveMessage:(RCMessage *)message left:(int)left {
    
    if ([message.objectName isEqualToString:@"RC:CmdMsg"]) {
        
        RCCommandMessage *commandMessage = (RCCommandMessage *)message.content;
        
        NSData *jsonData = [commandMessage.data dataUsingEncoding:NSUTF8StringEncoding];
        NSError *err;
        NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:&err];
        NSMutableDictionary *dataDictionary = [NSMutableDictionary dictionaryWithDictionary:dict];
        [dataDictionary setObject:message.content.senderUserInfo.userId forKey:@"userId"];
        [dataDictionary setObject:message.content.senderUserInfo.name forKey:@"name"];
        [dataDictionary setObject:message.content.senderUserInfo.portraitUri forKey:@"portraitUri"];
        
        //视频通话
        if ([dict[@"messageType"] isEqualToString:MESSAGETYPE_VIDEOCALL]) {
            //视频语音通话 消息记录不需要保存在本地
                [UserInfo sharedUserInfo].msgType = 3;
                [UserInfo sharedUserInfo].vedioUrl = [dataDictionary objectForKey:@"fromVideoUrl"];
        
                dispatch_async(dispatch_get_main_queue(), ^{
            
                    [self showVideoView:dataDictionary withString:@"邀请你视频聊天"];

                });
        }
        
        //语音通话
        if ([dict[@"messageType"] isEqualToString:MESSAGETYPE_VOICECALLS]) {
       
            dispatch_async(dispatch_get_main_queue(), ^{
                if([self.window viewWithTag:5555] || [self.window viewWithTag:5556])return;
                if([UserInfo sharedUserInfo].yujianta == 34){
                
                    [UserInfo sharedUserInfo].msgType = 4;
                    [UserInfo sharedUserInfo].vedioUrl = @"";
                    [self showVideoView:dataDictionary withString:@"邀请你语音聊天"];
                
                    }
                
            });
            
        }
        
        
    } else {
        
        //更新未读数
        dispatch_async(dispatch_get_main_queue(), ^{
            
            [self setupUnreadMessageCount];
            
        });
        
        //设置顶置
        if ([message.content.senderUserInfo.name isEqualToString:@"最新访客"] || [message.content.senderUserInfo.name isEqualToString:@"系统消息"] || [message.content.senderUserInfo.name isEqualToString:@"客服消息"]) {
            
            [[RCIMClient sharedRCIMClient] setConversationToTop:message.conversationType targetId:message.targetId isTop:YES];
            
        }
        
        //将消息发送者用户信息保存到本地数据库
        NSFetchRequest *request = [NSFetchRequest fetchRequestWithEntityName:@"RYUserInfo"];
        NSPredicate *pre = [NSPredicate predicateWithFormat:@"userId = %@", message.content.senderUserInfo.userId];
        request.predicate = pre;
        NSArray *resArray = [_context executeFetchRequest:request error:nil];
        //如果不存在该用户信息就保存
        if (resArray.count == 0) {
            //插入数据
            RYUserInfo * info = [NSEntityDescription insertNewObjectForEntityForName:@"RYUserInfo" inManagedObjectContext:_context];
            
            info.userId = message.content.senderUserInfo.userId;
            info.name = message.content.senderUserInfo.name;
            info.portraitUri = message.content.senderUserInfo.portraitUri;
            
            NSError *error = nil;
            if ([_context save:&error]) {
                NSLog(@"数据插入到数据库成功");
            }else{
                NSLog(@"数据插入到数据库失败");
            }
            
        } else {
            
            //如果存在 就查看传来的数据是否和本地一致不同就修改
            RYUserInfo *info = resArray[0];
            
            if (![info.name isEqualToString:message.content.senderUserInfo.name])  info.name = message.content.senderUserInfo.name;
            
            if (![info.portraitUri isEqualToString:message.content.senderUserInfo.portraitUri])  info.portraitUri = message.content.senderUserInfo.portraitUri;
            
            NSError *error = nil;
            if ([_context save:&error]) {
                NSLog(@"修改成功");
            }else{
                NSLog(@"更新数据失败, %@", error);
            }
            
        }
        
    }

}

/设置消息列表头像昵称
- (void)getUserInfoWithUserId:(NSString *)userId completion:(void (^)(RCUserInfo *userInfo))completion {

    if ([userId isEqualToString:[RCIM sharedRCIM].currentUserInfo.userId]) {
        return completion([[RCUserInfo alloc] initWithUserId:userId name:[RCIM sharedRCIM].currentUserInfo.name portrait:[RCIM sharedRCIM].currentUserInfo.portraitUri]);
   } else {
        
        //查询数据库是否存在  UserID
        NSFetchRequest *request = [NSFetchRequest fetchRequestWithEntityName:@"RYUserInfo"];
        NSPredicate *pre = [NSPredicate predicateWithFormat:@"userId = %@", userId];
        request.predicate = pre;
        NSArray *resArray = [_context executeFetchRequest:request error:nil];
        //存在
        if (resArray.count != 0) {
            RYUserInfo *userInfo = resArray[0];
            RCUserInfo *user = [[RCUserInfo alloc] initWithUserId:userInfo.userId name:userInfo.name portrait:userInfo.portraitUri];
            return completion(user);
            
        }
        
    }

}