topic Re: cant add graphic to graphic layer user actionscript in ArcGIS API for Flex Questions

cant add graphic to graphic layer user actionscript

PeteVitt — Mon, 05 Mar 2012 21:16:51 GMT

I just cant seem to add a graphic to my graphic layer using actionscript --
I'm trying to add a point graphic where the user clicks the map -- this is what I have:

protected function MapClickHandler(event:MapMouseEvent):void
{
const mapPoint:MapPoint = theMap.toMapFromStage(event.stageX, event.stageY);
mapPoint.spatialReference = new SpatialReference(102100);

var myGraphicMarker:Graphic = new Graphic(mapPoint,
new SimpleMarkerSymbol(SimpleMarkerSymbol.STYLE_DIAMOND, 22, 0x009933));

myGraphicMarker.toolTip = "Marker added with ActionScript";
pointGraphicsLayer.add(myGraphicMarker);
pointGraphicsLayer.refresh();

}

<esri:Map id="theMap"
   mapClick="MapClickHandler(event)">
<esri:GraphicsLayer id="pointGraphicsLayer">
</esri:Map>

I've confirmed that event.stageX and stageY are returning map coords by putting the results in a text box -- Any help on what I could be missing would be appreciated.

Thanks

Pete

Re: cant add graphic to graphic layer user actionscript

RobertScheitlin__GISP — Sat, 11 Dec 2021 06:22:06 GMT

Pete,

Try using the built-in MapPoint that is returned by MapMouseEvent.

            protected function MapClickHandler(event:MapMouseEvent):void
            {
                const mapPoint:MapPoint = event.mapPoint;
                mapPoint.spatialReference = new SpatialReference(102100);
                
                var myGraphicMarker:Graphic = new Graphic(mapPoint,
                    new SimpleMarkerSymbol(SimpleMarkerSymbol.STYLE_DIAMOND, 22, 0x009933));
                
                myGraphicMarker.toolTip = "Marker added with ActionScript";
                pointGraphicsLayer.add(myGraphicMarker);
                pointGraphicsLayer.refresh();
                
            }

And you need to terminate your GraphicsLayer:

<esri:Map id="theMap" mapClick="MapClickHandler(event)">
<esri:GraphicsLayer id="pointGraphicsLayer" />
</esri:Map>

Don't forget to click the Mark as answer check and to click the top arrow (promote) as shown below:

Re: cant add graphic to graphic layer user actionscript

EmilyParson — Tue, 06 Mar 2012 03:44:34 GMT

It is useful for me!

Re: cant add graphic to graphic layer user actionscript

PeteVitt — Tue, 06 Mar 2012 14:18:39 GMT

Thanks Robert - I tried that method but the graphics still dont appear. The graphicAdd event on the graphicsLayer does fire after the code is run, however so the code is adding the graphic to the graphic layer, but it doesnt appear. I also tried changing the wkid to 3857 -- that didnt work either

Pete

.

Re: cant add graphic to graphic layer user actionscript

RobertScheitlin__GISP — Tue, 06 Mar 2012 14:28:02 GMT

Pete,

You need to share more of your code than because I did a quick and simple app using what I posted and it works fine.

Re: cant add graphic to graphic layer user actionscript

PeteVitt — Tue, 06 Mar 2012 15:35:44 GMT

I've attached the component in a text file.

Re: cant add graphic to graphic layer user actionscript

RobertScheitlin__GISP — Tue, 06 Mar 2012 15:54:33 GMT

Pete,

Your issue is not in the code you sent me because I took it and adde the CompProjectLocation.mxml and added it to an new Application and commented out the skins I did not get from you and the Nav tools and When I click on the map a blue diamond appears...
[ATTACH=CONFIG]12452[/ATTACH]

Re: cant add graphic to graphic layer user actionscript

PeteVitt — Tue, 06 Mar 2012 16:08:59 GMT

Thanks Robert for looking at this. I've had warnings pop up in my console about some of the esri classes I'm importing. Warnings such as:
The class com.esri.ags.geometry.MapPoint has been used in a call to net.registerClassAlias() in _ModRound2Form_FlexInit. This will cause Round2Form:ModRound2Form to be leaked. To resolve the leak, define com.esri.ags.geometry.MapPoint in the top-level application.

I need to dig more into this I guess. The map component is being used in ModRound2Form -- ModRound2Form is one of a number of modules that are swapped out using ModuleLoader in the main application

Re: cant add graphic to graphic layer user actionscript

RobertScheitlin__GISP — Tue, 06 Mar 2012 16:18:01 GMT

Pete,

So what that message means is that you need to import

import com.esri.ags.geometry.MapPoint;

in your main mxml Application.

You still need to mark this post as answered (follow the pictures steps left to right).

Don't forget to click the Mark as answer check and to click the top arrow (promote) as shown below:

Re: cant add graphic to graphic layer user actionscript

PeteVitt — Wed, 07 Mar 2012 20:37:32 GMT

I had the map component inside of an mx:tabNavigator and that seemed (for whatever reason) to be the cause of the graphic not appearing on the map when clicked. When I put the component inside of a viewstack it worked fine.

Re: cant add graphic to graphic layer user actionscript

TomRauch — Mon, 07 May 2012 02:57:40 GMT

Hi, here's my problem: I can access all the xml data from a php feed, but the script below returns only one data point. I should have several hundred.

Thanks for any help! Tom

<?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="World Street Map"
      creationComplete="service.send();" xmlns:mx="library://ns.adobe.com/flex/mx">



<fx:Declarations>

<mx:HTTPService id="service" url="http://192.168.1.49/buoy/flex/metar.php" result="myMap_loadHandler(event)" />

<esri:Extent id="initialExtent"
      xmin="-19325128.942" ymin="-10948057.675" xmax="-539964.871" ymax="18364625.427">
   <esri:SpatialReference wkid="102100"/>
</esri:Extent>

</fx:Declarations>

<fx:Script>
<![CDATA[
   import com.esri.ags.Graphic;
   import com.esri.ags.events.ExtentEvent;
   import com.esri.ags.events.GeometryServiceEvent;
   import com.esri.ags.events.MapEvent;
   import com.esri.ags.geometry.Geometry;
   import com.esri.ags.geometry.MapPoint;
   import com.esri.ags.geometry.Polygon;
   import com.esri.ags.symbols.PictureMarkerSymbol;
   import com.esri.ags.symbols.SimpleMarkerSymbol;
   import com.esri.ags.tasks.supportClasses.BufferParameters;
   import com.esri.ags.utils.WebMercatorUtil;

   import flash.sensors.Geolocation;

   import mx.collections.ArrayCollection;
   import mx.collections.XMLListCollection;
   import mx.rpc.events.ResultEvent;

   private function myMap_loadHandler(event:ResultEvent):void
   {
    var list:ArrayCollection = event.result.markers.marker;
    for (var i:int=0; i < list.length; i++) {

     var lat: Number;
     var lon: Number;




     var myGraphicMarker:Graphic = new Graphic(new MapPoint(list.lat, list.lon,
      new SpatialReference(102100)),
      new SimpleMarkerSymbol(SimpleMarkerSymbol.STYLE_DIAMOND, 22, 0x009933));



     myGraphicsLayer.add(myGraphicMarker);
      myGraphicsLayer.refresh();
    }


   }

]]>
</fx:Script>

<esri:Map extent="{initialExtent}" wrapAround180="true" >
<esri:ArcGISTiledMapServiceLayer url="http://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer"/>
<esri:GraphicsLayer id="myGraphicsLayer"/>

</esri:Map>

</s:Application>

Re: cant add graphic to graphic layer user actionscript

RobertScheitlin__GISP — Mon, 07 May 2012 11:03:07 GMT

Tom,

As this is a new question specific to you and this thread has already been answered, forum etiquette says you should not hijack a thread you should start your own.

Re: cant add graphic to graphic layer user actionscript

TomRauch — Mon, 07 May 2012 12:45:23 GMT

Ah, thanks - will start a new one.

Re: cant add graphic to graphic layer user actionscript

JohnCampbell4 — Thu, 28 Jun 2012 16:11:29 GMT

Thanks Robert for looking at this. I've had warnings pop up in my console about some of the esri classes I'm importing. Warnings such as:
The class com.esri.ags.geometry.MapPoint has been used in a call to net.registerClassAlias() in _ModRound2Form_FlexInit. This will cause Round2Form:ModRound2Form to be leaked. To resolve the leak, define com.esri.ags.geometry.MapPoint in the top-level application.

I ran into the same problem with mx.messaging.messages.SOAPMessage and some custom widgets. I'm using FB 4.6 and Flex Viewer 3.0. Problem did not arise wth FB 4.1 and Flex Viewer 2.3.1. Not only did I have to import the class into index.mxml as Robert pointed out but I also had to create a variable of the same class to fix the problem (no error messages in debug console):

import mx.messaging.messages.SOAPMessage;

private var _dummy:SOAPMessage;

John Campbell
GIS Application Developer

Kingston, Ontario, Canada
geospatialweb.ca