flex键盘监听事件

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

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" applicationComplete="appComplete();">

<mx:TextArea x="10" y="10" id="t1" width="381" height="387"/>

<mx:Script>

<![CDATA[

import flash.events.KeyboardEvent;

private function myKeyUp(evt:KeyboardEvent):void{

t1.text+= 'evt.charCode='+evt.charCode + 'evt.keyCode='+ evt.keyCode + 'evt.keyLocation='+ evt.keyLocation + " 弹起/n"

}

private function myKeyDown(evt:KeyboardEvent):void{

t1.text= 'evt.charCode='+evt.charCode + 'evt.keyCode='+ evt.keyCode + 'evt.keyLocation='+ evt.keyLocation + "按下/n";

}

private function appComplete():void{

//this.stage.addEventListener(KeyboardEvent.KEY_UP,myKeyUp);

this.stage.addEventListener(KeyboardEvent.KEY_DOWN,myKeyDown);

this.stage.addEventListener(KeyboardEvent.KEY_DOWN,myPress);

}

//下面方法演示每次按下上下左右键头,文本框移动+5像素;

private function myPress(evt:KeyboardEvent):void{

if(evt.keyCode==39){ //右

t2.x=t2.x+5;

}

if(evt.keyCode==38){//上

t2.y=t2.y-5;

}

if(evt.keyCode==40){//下

t2.y=t2.y+5;

}

if(evt.keyCode==37){//左

t2.x=t2.x-5;

}

}

]]>

</mx:Script>

<mx:TextInput x="567" y="149" id="t2"/>

</mx:Application>