comparator

/**
     * 比较器，用于帮派战力排在前面
     *
     */
    private class BangValueCompare implements Comparator<UserInfo>
    {
        @Override
        public int compare(UserInfo lhs, UserInfo rhs)
        {
            UserInfo sh1 = (UserInfo) lhs;
            UserInfo sh2 = (UserInfo) rhs;

            if (sh1 == null)
            {
                return 1;
            }
            if (sh2 == null)
            {
                return -1;
            }

            if (sh1.getValue() > sh2.getValue())
            {
                return -1;
            }
            else if (sh1.getValue() == sh2.getValue())
            {
                return 0;
            }
            else
            {
                return 1;
            }
        }
    }



BangValueCompare comparator = new BangValueCompare();
Collections.sort(mChatUserInfoList, comparator);