[java]
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:view="com.greencloud.view.*"
xmlns:mx="library://ns.adobe.com/flex/mx" height="100%" width="100%" creationComplete="application1_applicationCompleteHandler(event)">
展开第一项：
[java]
protected function application1_applicationCompleteHandler(event:FlexEvent):void
{
var item:XML = this.managerTree.dataProvider[0];
this.managerTree.expandChildrenOf(item,true);
}
展开所有项：
[java]
protected function application1_applicationCompleteHandler(event:FlexEvent):void
{
for each(var item:XML in this.managerTree.dataProvider)
this.managerTree.expandChildrenOf(item,true);
}