arcgis flex api---geocode identify

[abukhan]

Hi :

I am trying to do geocoding using flex api...
Here is the issue.

After typing the address, press the find button.
   What I need:
        It should show point on the map..
        and also use this point, query a layer (say county/tract) to get the results(like county code, tract code)
              from this layer without any click on the map

I tried to use the identify feature shown in the example, but the results.length becomes zero.
and did not show any results.

here is the find address:
private function doFind():void
   {
    var parameters:AddressToLocationsParameters = new AddressToLocationsParameters();
    myGraphicsLayer.clear();
    parameters.address = { SingleLine: onelineaddress.text };
   
    // Use outFields to get back extra information
    // The exact fields available depends on the specific Locator used.
    parameters.outFields = [ "Loc_name" ];
   
    locator.addressToLocations(parameters, new AsyncResponder(onResult, onFault));
    function onResult(candidates:Array, token:Object = null):void
    {
     if (candidates.length > 0)
     {
      var addressCandidate:AddressCandidate = candidates[0];
      var myGraphic:Graphic = new Graphic();
      var myGraphicWGS:Graphic = new  Graphic();
     
      // for 9.3 servers, or anything else returning latlong:  myGraphic.geometry = WebMercatorUtil.geographicToWebMercator(addressCandidate.location);
     
      myGraphic.geometry = addressCandidate.location;
      myGraphic.symbol = mySymbol;
      myGraphic.toolTip = addressCandidate.address.toString();
      myGraphic.id = "graphic";
      myGraphicsLayer.add(myGraphic);
     
      MainMap.centerAt(myGraphic.geometry as MapPoint);
     
      // Zoom to an appropriate level
      // Note: your attribute and field value might differ depending on which Locator you are using...
      if (addressCandidate.attributes.Loc_name.search("RoofTop") > 0) // US_RoofTop
      {
       MainMap.scale = 10000;
      }
      else if (addressCandidate.attributes.Loc_name.search("Address") > 0)
      {
       MainMap.scale = 10000;
      }
      else if (addressCandidate.attributes.Loc_name.search("Street") > 0) // US_Streets, CAN_Streets, CAN_StreetName, EU_Street_Addr* or EU_Street_Name*
      {
       MainMap.scale = 15000;
      }
      else if (addressCandidate.attributes.Loc_name.search("ZIP4") > 0
       || addressCandidate.attributes.Loc_name.search("Postcode") > 0) // US_ZIP4, CAN_Postcode
      {
       MainMap.scale = 20000;
      }
      else if (addressCandidate.attributes.Loc_name.search("Zipcode") > 0) // US_Zipcode
      {
       MainMap.scale = 40000;
      }
      else if (addressCandidate.attributes.Loc_name.search("City") > 0) // US_CityState, CAN_CityProv
      {
       MainMap.scale = 150000;
      }
      else
      {
       MainMap.scale = 500000;
      }
      //vboxlatlong.visible=true;
      var wgsmappoint:MapPoint = WebMercatorUtil.webMercatorToGeographic(addressCandidate.location) as MapPoint;
      //labellongitude.text = (wgsmappoint.x.toFixed(5)).toString();
      //labellatitude.text = (wgsmappoint.y.toFixed(5)).toString();
     
      labeladdressresult.text = "<b>Address Found:</b><br/>" + addressCandidate.address.toString(); // formated address
    
      //identify
      doIdentify(wgsmappoint);
     }
     else
     {
      //vboxlatlong.visible=false;//
      //labellongitude.text="";
      //labellatitude.text="";
      labeladdressresult.text = "<b><font color='#FF0000'>Found nothing !!</b></font>";
     
      Alert.show("Sorry, couldn't find a location for this address"
       + "\nAddress: " + onelineaddress.text);
     
     };
    }


here is the doIdentify (without using any mouse click)


private function doIdentify(mpoint:MapPoint):void{
    
    //clickGraphicsLayer.clear();
   
    //Alert.show("Hey" + mpoint.x.toString());
   
    var identifyParams:IdentifyParameters = new IdentifyParameters();
    identifyParams.returnGeometry = true;
    identifyParams.tolerance = 1;
    identifyParams.width = MainMap.width;
    identifyParams.height = MainMap.height;
    identifyParams.geometry = mpoint;
    identifyParams.mapExtent = MainMap.extent;
    identifyParams.spatialReference = MainMap.spatialReference;
    //Alert.show(mpoint.x.toString());
    //var mappoint:MapPoint = new MapPoint();
    //mappoint = mpoint;
    var clickGraphic:Graphic = new Graphic(mpoint, clickPtSym);
    clickGraphicsLayer.add(clickGraphic);
   
    identifyTask.execute(identifyParams, new AsyncResponder(myResultFunction, myFaultFunction, clickGraphic));
   
   }


results.length shows zero

private function myResultFunction(results:Array, clickGraphic:Graphic = null):void
   {
    // Alert.show(" i m ahere result function ");
     Alert.show(" i m ahere result function " + results.length.toString());
    if (results && results.length > 0)
    {
     var result:IdentifyResult = results[0];
     var resultGraphic:Graphic = result.feature;
     //Alert.show(resultGraphic.attributes.toString());
     switch (resultGraphic.geometry.type)
     {
      case Geometry.MAPPOINT:
      {
       resultGraphic.symbol = smsIdentify;
       break;
      }
      
     }
     lastIdentifyResultGraphic = resultGraphic;
     //paneltractresult.visible = true;
   
    }
   }




Thanks

Abu

[raffia]

Hi Aaron,

Many thanks for your reply, very appreciated 🙂 It worked great as you said.

Regards;
Raffu