public Accounts getAccountsById(int id) {
   for (Accounts c : mAccounts) {
     if (c.getRoomname().equals(id)) return c;
   }
   return null;
 }
 public Accounts getAccountsByRoomName(String roomname) {
   for (Accounts c : mAccounts) {
     if (c.getRoomname().equals(roomname)) return c;
   }
   return null;
 }