http://help.arcgis.com/en/webapi/flex/samples/index.html

<Mapping>---->Switching Basemaps

?

<?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:esri="http://www.esri.com/2008/ags"
???????????????pageTitle="Toggle?between?Map?Services">
????<!--
????This?sample?shows?one?way?of?allowing?users?to?change?between?different?basemaps.
????It?also?ensures?that?the?levels?of?detail?(LOD)?are?updated?based?on?which?basemap?is?selected.
????If?all?base?maps?have?the?same?LODs,?you?wouldn't?need?the?layerShowHandler?function.
????-->
????<fx:Script>
????????<![CDATA[
????????????import?com.esri.ags.geometry.MapPoint;
????????????import?com.esri.ags.layers.TiledMapServiceLayer;
????????????
????????????import?mx.events.FlexEvent;
????????????
????????????private?function?layerShowHandler(event:FlexEvent):void
????????????{
????????????????//?update?the?LODs/zoomslider?to?use/show?the?levels?for?the?selected?base?map
????????????????var?tiledLayer:TiledMapServiceLayer?=?event.target?as?TiledMapServiceLayer;
????????????????myMap.lods?=?tiledLayer.tileInfo.lods;
????????????}
????????]]>
????</fx:Script>
????
????<esri:Map?id="myMap"
??????????????level="4"
??????????????load="myMap.centerAt(new?MapPoint(-11713000,?4822000))">
????????<esri:ArcGISTiledMapServiceLayer?show="layerShowHandler(event)"
?????????????????????????????????????????url="http://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer"
?????????????????????????????????????????visible="{bb.selectedIndex?==?0}"/>
????????<esri:ArcGISTiledMapServiceLayer?show="layerShowHandler(event)"
?????????????????????????????????????????url="http://server.arcgisonline.com/ArcGIS/rest/services/USA_Topo_Maps/MapServer"
?????????????????????????????????????????visible="{bb.selectedIndex?==?1}"/>
????????<esri:ArcGISTiledMapServiceLayer?show="layerShowHandler(event)"
?????????????????????????????????????????url="http://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer"
?????????????????????????????????????????visible="{bb.selectedIndex?==?2}"/>
????</esri:Map>
????<s:ButtonBar?id="bb"
?????????????????right="5"?top="5"
?????????????????requireSelection="true">
????????<s:dataProvider>
????????????<s:ArrayList>
????????????????<fx:String>Streets</fx:String>
????????????????<fx:String>U.S.?Topo</fx:String>
????????????????<fx:String>Imagery</fx:String>
????????????</s:ArrayList>
????????</s:dataProvider>
????</s:ButtonBar>
</s:Application>

顯示：

轉載于:https://www.cnblogs.com/pandy/archive/2011/06/10/2077512.html

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