在本实例中将从一个XML对象通过层层转换最终变为ArrayCollection对象  <?xmlversion="1.0"encoding="utf-8"?><mx:Applicationxmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="init()">

this.ArrayCollection_arr=neweui.ArrayCollection(); this.ArrayCollection_arr.source=this.icon_list_arr; this.icon_list.itemRenderer=Firstlistbtn; this.ic

参考源https://www.bilibili.com/video/BV1u3411P7Na?p=25&vd_source=299f4bc123b19e7d6f66fefd8f124a03迭代器模式（IteratorPattern）属于行为型模式概述迭代器模