<?xml version="1.0" encoding="utf-8"?>
<mx:Application fontSize="12" xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="init()">
<mx:Script>
? <![CDATA[
?? public var treeXml: XML = <nodes name="所有">
????????? <node name="test01" code ="01" >
?????????? <node name="test0101" code ="0101" />
?????????? <node name="test0102" code ="0102" />
?????????? <node name="test0103" code ="0103" />
????????? </node>
????????? <node name="test02" code ="02" />
????????? <node name="test03" code ="03" />
????????? <node name="test04" code ="04" >
?????????? <node name="test0401" code ="0401" />
?????????? <node name="test0402" code ="0402" />
?????????? <node name="test0403" code ="0403" />
????????? </node>?????????
????????? <node name="test05" code ="05" />
????????? </nodes>;
?? private function init():void
?? {
??? tree.dataProvider = treeXml;
//默认展开第一个节点
??? tree.openItems = treeXml;
//选中第一个节点???
?? tree.selectedItem = treeXml;? ??? ? ]]> </mx:Script> <mx:Tree id="tree" x="0" y="0" height="321" labelField="@name" width="261"></mx:Tree>
