UIScrollView复用节点示例

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重要脚本：UIPanel，UIScrollView，UIDragScrollView，UIWrapContent

记得item挂UIDragScrollView和BoxCollider哦

如下图，先把物体和脚本弄好

ReuseScroll就是自己写的复用脚本了

代码如下：

using UnityEngine;using System.Collections;using System.Collections.Generic;public class ReuseScroll : MonoBehaviour{    /// <summary>    /// 数据类    /// </summary>    public class MyData    {        public MyData(string name)        {            this.name = "name_" + name;        }        public string name;    }    public UIWrapContent wrapContent;    private Dictionary<int, GameObject> m_index2Item = new Dictionary<int, GameObject>();    /// <summary>    /// 数据列表    /// </summary>    private List<MyData> m_data = new List<MyData>();    protected void Start()    {        InitData();        //启动wrapContent//        wrapContent.enabled = true;        //实现复用的托管方法//        wrapContent.onInitializeItem = (go, wrapIndex, realIndex) =>        {            realIndex = -realIndex;            if (!m_index2Item.ContainsKey(realIndex))            {                m_index2Item.Add(realIndex, go);            }            var actv = realIndex >= 0 && m_data.Count > realIndex;            go.SetActive(actv);            if (actv)                go.GetComponentInChildren<UILabel>().text = m_data[realIndex].name;        };    }    protected void Update()    {        //按A键添加数据并更新列表//        if (Input.GetKeyDown(KeyCode.A))        {            var index = m_data.Count;            AddData(new MyData(index.ToString()));            if (m_index2Item.ContainsKey(index))            {                var go = m_index2Item[index];                if (go.transform.localPosition.y <= 0)                {                    go.SetActive(true);                    go.GetComponentInChildren<UILabel>().text = m_data[index].name;                }            }        }    }    /// <summary>    /// 初始化数据    /// </summary>    private void InitData()    {        for (int i = 0; i < 4; ++i)        {            m_data.Add(new MyData(i.ToString()));        }    }    /// <summary>    /// 添加数据    /// </summary>    private void AddData(MyData data)    {        m_data.Add(data);    }}

效果如下，只需要几个item，复用可以显示无限个item，按A键即可插入新的数据并更新列表

希望大家有更好的办法的话，可以分享交流

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