topic Re: Get features symbol in ArcGIS API for Flex Questions

Get features symbol

AndrzejMilosz — Tue, 22 Oct 2013 15:19:39 GMT

After querying feature layer I receive FeatureSet. I can get each graphic in FeatureSet. The problem is I can not get symbol of the graphics. It seems to be null. The piece of code is:

private function queryS():void {
    
      queryTaskMain.execute(queryMain, new AsyncResponder(onResult, onFault));
     
      function onResult(featureSet:FeatureSet, token:Object = null):void {
      
            for each(var graphic : Graphic in featureSet.features) {

                          symbs.push(graphic.symbol);
             }  
       }
}

I receive nulls in Array. Is this a correct way to get feature's symbols?

Re: Get features symbol

Drew — Wed, 23 Oct 2013 17:04:40 GMT

If you have not defined the symbol, the symbol property will be null.
Your going to have to set it first to your desired symbol (depending on the geometry)

more information on the types of symbols.
https://developers.arcgis.com/en/flex/api-reference/com/esri/ags/symbols/package-detail.html

Drew

Re: Get features symbol

DasaPaddock — Thu, 24 Oct 2013 03:27:30 GMT

You can get the symbols defined for the layer on the server using the DetailsTask.

See:
https://developers.arcgis.com/en/flex/api-reference/com/esri/ags/tasks/DetailsTask.html
https://developers.arcgis.com/en/flex/api-reference/com/esri/ags/layers/supportClasses/LayerDetails.html#drawingInfo