Flex AIR 键盘事件示例

AIR

<?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>