About Graphic and Features Layer:

EvelynHernandez — Tue, 04 Feb 2014 10:40:00 GMT

Hello me again
I have another question about Dynamic and Featured layers.
I have a base map which i want to load some info on it. For example i want to put on the base map a layer(dynamic) with some "population points filtered by country.

"When the user click a button seaching for a country, i just want to show the points in that country delimited country"

Im using querys to get the points but i cant show them to the map.
What im doing wrong?
Thanks for ur help, i will let u know some part of the code:

private function doQuery():void
   {
    queryTask.execute(query, new AsyncResponder(onResult, onFault));
    ciudad_luminaria=qText.text;
    //Llamando a funcion cargar luminarias para cargar las luminarias del mapa que corresponden
    this.cargarLuminarias();
    function onResult(featureSet:FeatureSet, token:Object = null):void
    {
     if (featureSet.features.length == 1)
     {
      myMap.zoomTo(featureSet.features[0].geometry);
      
      
     }
     else if (featureSet.features.length > 1)
     {
      var graphicsExtent:Extent = GraphicUtil.getGraphicsExtent(featureSet.features);
      if (graphicsExtent)
      {
       myMap.extent = graphicsExtent;
      }
     }
    }
    function onFault(info:Object, token:Object = null):void
    {
     Alert.show(info.toString(), "Query Problem");
    }
   }
   
    public function cargarLuminarias():void
   {
    
    var queryTaskLuminaria:QueryTask = new QueryTask();
    queryTaskLuminaria.showBusyCursor=true;
    queryTaskLuminaria.url="the direction of the map server where the points are located.";
    queryTaskLuminaria.useAMF=false;
        
    var queryLum:Query = new Query();
    queryLum.outSpatialReference=  myMap.spatialReference;
    queryLum.where="ARCGIS.DBO.Nodos_006.comuna='" + qText.text+"'";
    queryLum.returnGeometry=true;
    
    queryTaskLuminaria.execute(queryLum,new AsyncResponder(onResult,onFault));
    function onResult(featureSet:FeatureSet, token:Object = null):void
    {
     if (featureSet.features.length == 1)
     {
      
      myMap.zoomTo(featureSet.features[0].geometry);
      
     }
     else if (featureSet.features.length > 1)
     {
      var graphicsExtent:Extent = GraphicUtil.getGraphicsExtent(featureSet.features);
      if (graphicsExtent)
      {
       myMap.extent = graphicsExtent;
      }
     }
    }
    function onFault(info:Object, token:Object = null):void
    {
     Alert.show(info.toString(), "Query Problem");
    }
   }
   
   
   
     
   
   
   
  ]]>
  
 </fx:Script>
 
 <fx:Declarations>
  <!-- Symbol for Identify Result as Point -->
  <esri:SimpleMarkerSymbol id="smsIdentify"
         alpha="0.5"
         color="0x00FFFF"
         size="20"
         style="circle"/>
  
  <!-- Layer with Cities (LIMITE COMUNAL)-->
  <esri:QueryTask id="queryTask"
      showBusyCursor="true"
      url="the mapserver for the located zone"
      useAMF="false"/>
  
  <esri:Query id="query"
     outSpatialReference="{myMap.spatialReference}"
     returnGeometry="true"
     text="{qText.text}">
   <esri:outFields>
    <fx:String>nombre</fx:String>
   
   </esri:outFields>
  </esri:Query>
  
  
 </fx:Declarations>
 
 <!-- Mapa -->
 
 
 
 <!-- Indica características del mapa -->
 <esri:Map id="myMap">
  <esri:extent>
   <esri:Extent xmin="-7945607.002626869" ymin="-3881255.94806623" xmax="-7913541.669261281" ymax="-3863331.4649333805">
    <esri:SpatialReference wkid="102100"/>
   </esri:Extent>
  </esri:extent>
  <esri:ArcGISTiledMapServiceLayer url="http://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer"/>
  <esri:GraphicsLayer id="myGraphicsLayer" graphicProvider="{queryTask.executeLastResult.features}"/>
  
 </esri:Map>

topic About Graphic and Features Layer: in ArcGIS API for Flex Questions

About Graphic and Features Layer: