一、脚本编程

1、创建InventoryUI.cs文件

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace MFarm.Inventory 
{
    public class InventoryUI : MonoBehaviour
    {
        [SerializeField] private SlotUI[] playerSlots;

        private void OnEnable()
        {
            EventHandler.UpdateInventoryUI += OnUpdateInventoryUI;
        }
        private void OnDisable()
        {
            EventHandler.UpdateInventoryUI -= OnUpdateInventoryUI;
        }

        private void Start()
        {
            for (int i = 0; i < playerSlots.Length; i++)
            {
                playerSlots[i].slotIndex = i; 
            }
        }
        private void OnUpdateInventoryUI(InventoryLocation location, List<InventoryItem> list)
        {
            switch (location)
            {
                case InventoryLocation.Player:
                    for (int i = 0; i < playerSlots.Length; i++)
                    {
                        if (list[i].itemAmount > 0)
                        {
                            var item = InventoryManager.Instance.GetItemDetails(list[i].itemID);

                            playerSlots[i].UpdateSlot(item, list[i].itemAmount);
                        }
                        else
                        {
                            playerSlots[i].UpdateEmptySlot();
                        }

                    }
                    break;
            }
        }
    }
}

2、修改Inventorymanager

  EventHandler.CallUpdateInventoryUI(InventoryLocation.Player, playerBag.itemList);

3、创建EventHandler.cs文件

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UIElements.Experimental;

public static class EventHandler 
{
    public static event Action<InventoryLocation, List<InventoryItem>> UpdateInventoryUI;
    public static void CallUpdateInventoryUI(InventoryLocation location, List<InventoryItem> list)
    {
        UpdateInventoryUI?.Invoke(location, list);
    }
 
}

4、不要忘记slotImage打开

slotImage.enabled = true;

二、开发操作

1、将物品栏和背包里的UI格子赋予Player Slots

2、将PlayerBag设置为26

三、脚本逻辑

未完待续......

阅读更多作者文章：

# Unity3D 游戏开发：制作游戏背包 根据数据显示图片和数量（25）