flex 中Tree的数据由数组提供

　　
　　flex/spark" 
　　xmlns:mx="library://ns.adobe.com/flex/mx" 
　　xmlns:d="http://ns.adobe.com/fxg/2008/dt"
　　creationComplete="init()"
　　width="100%" height="100%"> import mx.controls.*;
　　import mx.events.*; import mx.collections.ArrayCollection; [Bindable] public var treeData:ArrayCollection;  Array=new Array();        var one11:Object={label:"tree0",data:"11"};        ones.push(one11);        var one22:Object={label:"tree1",data:"12"};        ones.push(one22);       var one33:Object={label:"tree2",data:"13"};       ones.push(one33);       treeData=new ArrayCollection(ones);       //展开根节点
　　//myTree.expandItem(treeData.getItemAt(0), true);
　　//设置根节点选中
　　//myTree.selectedIndex = 0;
　　}
　　]]>