切换两个切片方案相同，但是dpi不同的切片服务，Map.scale获取的比例尺数值不对

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

<s:Application xmlns:fx=http://ns.adobe.com/mxml/2009

xmlns:s=library://ns.adobe.com/flex/spark

xmlns:mx=library://ns.adobe.com/flex/mx minWidth=955 minHeight=600 xmlns:ns=http://www.esri.com/2008/ags>

<fx:Declarations>

<!-- 将非可视元素（例如服务、值对象）放在此处 -->

</fx:Declarations>

<fx:Script>

<![CDATA[



protected function button1_clickHandler(event:MouseEvent):void

{

t96.visible=!t96.visible;

t130.visible=!t96.visible;

}

]]>

</fx:Script>

<s:Label text={map.scale} left=100></s:Label>

<ns:Map id=map>

<ns:ArcGISTiledMapServiceLayer url=http://192.168.220.125:6080/ar ... erver id=t130></ns:ArcGISTiledMapServiceLayer>

<ns:ArcGISTiledMapServiceLayer url=http://192.168.220.125:6080/ar ... erver id=t96 alpha=0.5></ns:ArcGISTiledMapServiceLayer>

</ns:Map>

<s:Button label=Switch Tile DPI click=button1_clickHandler(event)></s:Button>

</s:Application>