Question

flex4怎样得到tree节点的文本

Answer 1

具体做法参见下面的代码
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
skinClass="TDFGradientBackgroundSkin"
viewSourceURL="srcview/index.html">

<fx:Script>
<![CDATA[

[Bindable]public var selectedNode:XML;

// Event handler for the Tree control change event.
public function treeChanged(event:Event):void {
selectedNode=Tree(event.target).selectedItem as XML;
}
]]>
</fx:Script>

<fx:Declarations>
<fx:XMLList id="treeData">
<node label="Mail Box">
<node label="Inbox">
<node label="Marketing"/>
<node label="Product Management"/>
<node label="Personal"/>
</node>
<node label="Outbox">
<node label="Professional"/>
<node label="Personal"/>
</node>
<node label="Spam"/>
<node label="Sent"/>
</node>
</fx:XMLList>
</fx:Declarations>

<s:layout>
<s:VerticalLayout horizontalAlign="center" />
</s:layout>

<s:Panel title="Tree Control" color="0x000000"
borderAlpha="0.15"
width="600">

<s:layout>
<s:VerticalLayout horizontalAlign="center"
paddingLeft="10" paddingRight="10"
paddingTop="10" paddingBottom="10"/>
</s:layout>

<s:Label width="100%" color="0x323232"
text="Select a node in the Tree control."/>

<mx:HDividedBox width="100%" height="100%" color="0x323232">
<mx:Tree id="myTree" width="50%" height="100%" labelField="@label"
showRoot="false" dataProvider="{treeData}" change="treeChanged(event)"/>
<s:TextArea height="100%" width="50%"
text="Selected Item: {selectedNode.@label}"/>
</mx:HDividedBox>

</s:Panel>
</s:Application>