虚拟列表和循环列表提交

UnityGame/Assets/Scripts/ThirdParty/LoopList/UILoopList.cs

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+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace CreatGame.UI
+{
+    /// <summary>
+    /// item提供者
+    /// </summary>
+    public delegate string LoopListItemProvider(int index);
+    /// <summary>
+    /// item渲染函数
+    /// </summary>
+    public delegate void LoopListItemRenderer(GameObject item,int index);
+    public class UILoopList : MonoBehaviour, LoopScrollPrefabSource, LoopScrollDataSource
+    {
+        /// <summary>
+        /// 
+        /// </summary>
+        public LoopListItemProvider ListItemProvider;
+        /// <summary>
+        /// 
+        /// </summary>
+        public LoopListItemRenderer ListItemRenderer;
+        /// <summary>
+        /// 
+        /// </summary>
+        private Dictionary<string, Stack<GameObject>> itemPool = new Dictionary<string, Stack<GameObject>>();
+        /// <summary>
+        /// 预制件
+        /// </summary>
+        public GameObject itemPrefab;
+        public GameObject GetObject(int index)
+        {
+            string itemPath = String.Empty;
+            if (ListItemProvider != null)
+            {
+                itemPath = ListItemProvider(index);
+            }
+            else
+            {
+                itemPath = "Default";
+            }
+
+            if (itemPool.TryGetValue(itemPath, out Stack<GameObject> itemList) == false)
+            {
+                itemList = new Stack<GameObject>();
+                itemPool.Add(itemPath, itemList);
+            }
+
+            if (itemList.Count == 0)
+            {
+                if (ListItemProvider == null)
+                {
+                    if (itemPrefab != null)
+                    {
+                        itemList.Push(Instantiate(itemPrefab));
+                    }
+                    else
+                    {
+                        Debug.LogError("ItemPrefab is null and ListItemProvider == null");
+                        return null;
+                    }
+                }
+                else
+                {
+                    var item = AssetBundle.AssetBundleManager.Instance.LoadGameObject(itemPath);
+                    var export = item.GetComponent<UIViewBase>();
+                    if (export == null)
+                    {
+                        Debug.LogError("预制件没有绑定导出代码的UIViewBase");
+                    }
+
+                    export.PreLoad(item);
+                    itemList.Push(item);
+                }
+            }
+
+            return itemList.Pop();
+        }
+
+        public void ReturnObject(Transform trans)
+        {
+            var export = trans.GetComponent<UIViewBase>();
+            if (export != null)
+            {
+                if (itemPool.TryGetValue(export.PrefabPath, out Stack<GameObject> itemList) ==false)
+                {
+                    itemList = itemPool["Default"];
+                }
+                
+                itemList.Push(trans.gameObject);
+            }
+            else
+            {
+                Debug.LogError("返回对象池失败");
+            }
+        }
+
+        public void ProvideData(Transform transform, int idx)
+        {
+            if (ListItemRenderer == null)
+            {
+                Debug.LogError("ListItemRenderer is null");
+                return;
+            }
+            ListItemRenderer(transform.gameObject, idx);
+        }
+
+        /// <summary>
+        /// 
+        /// </summary>
+        public LoopScrollRect ScrollRect { get; private set; }
+
+        private void Start()
+        {
+            ScrollRect = GetComponent<LoopScrollRect>();
+            ScrollRect.prefabSource = this;
+            ScrollRect.dataSource = this;
+        }
+
+        public int ItemCount
+        {
+            get => ScrollRect.totalCount;
+            set => ScrollRect.totalCount = value;
+        }
+
+        public void RefillCells()
+        {
+            ScrollRect?.RefillCells();
+        }
+        
+    }
+}