1存储：遍历整个背包的格子。将有子物体的格子给储存下来

  public void SaveInventory()

    {

        StringBuilder sb = new StringBuilder();

        foreach (Slot slot in slotList)

        {

            if (slot.transform.childCount > 0)

            {

                ItemUI itemUI = slot.transform.GetChild(0).GetComponent<ItemUI>();

                sb.Append(itemUI.Item.ID + ","+itemUI.Amount+"-");

            }

            else

            {

                sb.Append("0-");

            }

        }

        PlayerPrefs.SetString(this.gameObject.name, sb.ToString());

    }

2加载：

public void LoadInventory()

    {

        if (PlayerPrefs.HasKey(this.gameObject.name) == false) return;

        string str = PlayerPrefs.GetString(this.gameObject.name);

        //print(str);

        string[] itemArray = str.Split('-');

        for (int i = 0; i < itemArray.Length-1; i++)

        {

            string itemStr = itemArray[i];

            if (itemStr != "0")

            {

                //print(itemStr);

                string[] temp = itemStr.Split(',');

                int id = int.Parse(temp[0]);

                Item item = InventoryManager.Instance.GetItemById(id);

                int amount = int.Parse(temp[1]);

                for (int j = 0; j < amount; j++)

                {

                    slotList[i].StoreItem(item);

                }

            }

        }

    }