Flex使用Resize类和Exponential类

<? xml version="1.0" encoding="utf-8" ?>
< mx:Application  xmlns:mx ="http://www.adobe.com/2006/mxml" >
<!--
  使用Resize类来处理控件变化特效；
  首先，引入mx.effects.Resize类；
  其次，创建一个resizePanel方法；
  第三，在方法中声明Resize的对象，并把目标Panel的id加载，然后使用Resize的play方法
  第四，将resizePanle方法作为click event的listener来使用。
-->
   < mx:Script >
     <![CDATA[
      import mx.effects.Resize;
      public function resizePanel():void{
        var myResize:Resize=new Resize();
        myResize.target=myPanel;
        myResize.widthBy=100;
        myResize.heightBy=100;
        myResize.play();
      }
     ]]>
   </ mx:Script >
   < mx:Panel  id ="myPanel" />
   < mx:Button  label ="Resize"  click ="resizePanel()" />
</ mx:Application >

<? xml version="1.0" encoding="utf-8" ?>
< mx:Application  xmlns:mx ="http://www.adobe.com/2006/mxml" >
   < mx:Script >
     <![CDATA[
      import mx.effects.easing.Exponential;
     ]]>
   </ mx:Script >
   < mx:Parallel  id ="parallelEffect"  target =" {myPanel} " >
     < mx:Resize  widthBy ="150"  heightBy ="150"  easingFunction =" {Exponential.easeOut} " />
     < mx:Blur  blurXTo ="5"  blurYTo ="5" />
   </ mx:Parallel >
   < mx:Sequence  id ="sequenceEffect"  target =" {myPanel} " >
     < mx:Resize  widthBy ="-150"  heightBy ="-150"  easingFunction =" {Exponential.easeInOut} " />
     < mx:Blur  blurXTo ="0"  blurYTo ="0" />
   </ mx:Sequence >
   < mx:Panel  id ="myPanel"  title ="Panel"  width ="100"  height ="100" />
   < mx:Button  label ="Parallel Effect"  click ="parallelEffect.play()" />
   < mx:Button  label ="Sequence Effect"  click ="sequenceEffect.play()" />
</ mx:Application >