public Text itemCount;         //用于显示物品数量

    /// <summary>
    /// 将对应的物品显示在Grid方格中
    /// </summary>
    /// <param name="id">物品id</param>
    /// <param name="num">物品数量</param>
    public void SetByID(int id, int num = 1)
    {
        this.id = id;
        info    = ObjectsInfo._instance.GetObjectInfoById(id);
        BagItem item = this.GetComponentInChildren <BagItem>();

        item.setIconName(info.name_Icon);
        count             = num;
        itemCount.enabled = true;
        itemCount.text    = count.ToString();
    }