Flex动态添加控件 以及注册控件的监听事件(完整版)

<?xml version="1.0" encoding="utf-8"?>
<mx:Application 
xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:Script>
<![CDATA[
import mx.controls.*;

public function c():void
{
var tx:TextInput=new TextInput();
tx.id="mm";
tx.width=100;
tx.x=19;
tx.y=59;
this.addChild(tx);
tx.addEventListener(Event.CHANGE,s);
}
public function s(event:Event):void
{
Alert.show("控件的id"+(event.target  as TextInput).id+"控件的文本"+(event.target  as TextInput).text);
}

]]>
</mx:Script>

<mx:Button x="0" y="231" label="点击动态添加控件以及控件发生改变调用" click="c()" width="433" height="46" fontSize="21"/>
</mx:Application>