how to zoom out selected layers

VikramTripathi — Wed, 20 Apr 2011 05:52:16 GMT

Hi

i am using arcDynamicMapServices for developing application, in our arcGIS server. i want to zoom my map as per my layer value (like block='0001'),
m attaching code which i made.

<?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" xmlns:esri="http://www.esri.com/2008/ags">

<fx:Script>
<![CDATA[
   import com.esri.ags.events.LayerEvent;
   import com.esri.ags.geometry.Extent;
   private var location:ArcGISDynamicMapServiceLayer=new ArcGISDynamicMapServiceLayer();
   private var lyrDef:Array;

   private function zoomToBlock(){
    lblMsg.text='Zooming to Block..';
    lyrDef = ["DIST_CODE='31' AND BLOCK_CODE ='"+txtDisrictId.text+"'",
     "DIST_CODE='31' AND BLOCK_CODE ='"+txtDisrictId.text+"'",
     "DIST_CODE='31' AND BLOCK_CODE ='"+txtDisrictId.text+"'",
     "DIST_CODE='31' AND BLOCK_CODE ='"+txtDisrictId.text+"'",
     "DIST_CODE='31' AND BLOCK_CODE ='"+txtDisrictId.text+"'",
     "DIST_CODE='31' AND BLOCK_CODE ='"+txtDisrictId.text+"'",
     "DIST_CODE='31' AND BLOCK_CODE ='"+txtDisrictId.text+"'",
     "DIST_CODE='31' AND BLOCK_CODE ='"+txtDisrictId.text+"'",
     "DIST_CODE='31' AND BLOCK_CODE ='"+txtDisrictId.text+"'",
     "DIST_CODE='31' AND BLOCK_CODE ='"+txtDisrictId.text+"'",
     "DIST_CODE='31' AND BLOCK_CODE ='"+txtDisrictId.text+"'"];
    dynServMap.layerDefinitions=lyrDef;
    //location.layerDefinitions=lyrDef;
    //location.addEventListener(LayerEvent.LOAD,completeHandler);


   }
   private function completeHandler(evt:LayerEvent){
    var dynLyr:ArcGISDynamicMapServiceLayer;
    dynLyr=evt.layer as ArcGISDynamicMapServiceLayer;
    myMap.extent=dynLyr.fullExtent;
   }
]]>
</fx:Script>
<s:layout>
<s:VerticalLayout/>
</s:layout>
<s:controlBarLayout>
<s:HorizontalLayout gap="10"
       horizontalAlign="left"
       paddingBottom="7"
       paddingLeft="10"
       paddingRight="10"
       paddingTop="7"/>
</s:controlBarLayout>
<mx:ControlBar >
<s:Button id="btn1" label="Select Layer" click="zoomToBlock()"/>
<s:TextInput id="txtDisrictId" text="0001"/>
<s:Label id="lblMsg"/>
</mx:ControlBar>
<esri:Map id="myMap">
<esri:infoWindowContent>
   <mx:TextArea id="myTextArea"
       width="250" height="75"/>
</esri:infoWindowContent>
<esri:ArcGISDynamicMapServiceLayer
   id="dynServMap"
   url="http://10.131.2.64:8080/GeoServiceRest/services/ModifiedGeoApproach/MapServer"
   visible="true">
   <esri:visibleLayers>
    <s:ArrayCollection>
     <fx:Number>8</fx:Number>
     <fx:Number>9</fx:Number>
     <fx:Number>10</fx:Number>
    </s:ArrayCollection>
   </esri:visibleLayers>
</esri:ArcGISDynamicMapServiceLayer>

</esri:Map>
</s:Application>

dear sir from above code i can select map in same extents,
but i want to zoom it in center in full extent of selected layer.

topic how to zoom out selected layers in ArcGIS API for Flex Questions

how to zoom out selected layers