修改群名称后再返回会话列表页面，这个群会话title的名称没有改过来

问题描述

解决方案

ChatListViewController 里面相应的代码注释了 -(UITableViewCell *)tableView:(UITableView *)tableView         cellForRowAtIndexPath:(NSIndexPath *)indexPath{这个方法里面的代码    else{        NSString *imageName = @"groupPublicHeader";//        if (![conversation.ext objectForKey:@"groupSubject"] || ![conversation.ext objectForKey:@"isPublic"])//        {            NSArray *groupArray = [[EaseMob sharedInstance].chatManager groupList];            for (EMGroup *group in groupArray) {                if ([group.groupId isEqualToString:conversation.chatter]) {                    cell.name = group.groupSubject;                    imageName = group.isPublic ? @"groupPublicHeader" : @"groupPrivateHeader";                    NSMutableDictionary *ext = [NSMutableDictionary dictionaryWithDictionary:conversation.ext];                    [ext setObject:group.groupSubject forKey:@"groupSubject"];                    [ext setObject:[NSNumber numberWithBool:group.isPublic] forKey:@"isPublic"];                    conversation.ext = ext;                    break;                }            }//        }//        else//        {//            cell.name = [conversation.ext objectForKey:@"groupSubject"];//            imageName = [[conversation.ext objectForKey:@"isPublic"] boolValue] ? @"groupPublicHeader" : @"groupPrivateHeader";//        }        cell.placeholderImage = [UIImage imageNamed:imageName];    }
解决方案二：
因为[[EaseMob sharedInstance].chatManager groupList]方法是从本地缓存中获取群组列表信息，所以，修改群名称后，需要调用asyncFetchMyGroupsListWithCompletion方法（从服务端获取最新的群列表信息），从而触发本地群组列表的缓存刷新。在ConversationListController中，群组的名称是通过遍历 [[EaseMob sharedInstance].chatManager groupList]获取最新的群信息，然后重组self.conversation.ext字典，这样才能显示最新的群名称。