flex 按钮震动

 <?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx=" http://www.adobe.com/2006/mxml" width="170" height="140">
<!--duration 持续时间  repeatCount重复的次数 -->
<mx:Zoom id="shrink" duration="100" zoomHeightTo=".9" zoomWidthTo=".9" />
<mx:Zoom id="revert" duration="50" repeatCount="50" zoomHeightTo="1" zoomWidthTo="1" />
<mx:Panel title="Bouncy Button" paddingTop="10" paddingBottom="10" paddingLeft="10" paddingRight="10" autoLayout="false" left="41" top="24" right="42">
<!-- Assign effects to target -->
<mx:Button id="bouncyButton" label="Click me!" mouseDownEffect="{shrink}" mouseUpEffect="{revert}"/>
</mx:Panel>
</mx:Application>