tree节点自动展开

<?xml version="1.0" encoding="utf-8"?>

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="initApp();" fontSize="12">

<mx:XML id="treeXML" format="e4x">

<root>

<node label="通知通告管理" data="0">

<node label="申报通知" data="1" />

<node label="填表须知" data="1" />

<node label="申报指南" data="1" />

<node label="立项通告" data="1" />

<node label="其它通知通告" data="1" />

<node label="系统帮助" data="1" />

</node>

<node label="用户管理" data="0">

<node label="申报单位用户管理" data="2" />

<node label="归口部门用户管理" data="3" />

<node label="审批用户管理" data="4" />

</node>

<node label="系统设置" data="0">

<node label="部门设置" data="5" />

<node label="项目类别设置" data="5" />

<node label="区域设置" data="5" />

<node label="单位类别设置" data="5" />

<node label="企业类型设置" data="5" />

<node label="经济类型设置" data="5" />

<node label="学历设置" data="5" />

<node label="企业信用等级设置" data="5" />

</node>

</root>

</mx:XML>

<mx:Script>

<![CDATA[

private function initApp():void {

for each(var item:XML in this.myTree.dataProvider)

this.myTree.expandChildrenOf(item,true);

}

]]>

</mx:Script>

<mx:Tree id="myTree" dataProvider="{treeXML}" labelField="@label" showRoot="false" width="200" height="100%" />

</mx:Application>