import 'package:chat/utils/conversation_table.dart'; import 'package:flutter/material.dart'; class GroupSelectProvider with ChangeNotifier { List curSelectFriendList = []; addFriend(FriendModel friendModel) { curSelectFriendList.add(friendModel); notifyListeners(); } removeFriend(FriendModel friendModel) { curSelectFriendList.remove(friendModel); notifyListeners(); } isSelect(FriendModel friendModel) { return curSelectFriendList.contains(friendModel); } }