map.centerAt(mapPoint) null object reference

paoloanghileri — Mon, 16 May 2011 10:24:00 GMT

I have adapted a code for finding a place, setting a graphic point and zooming into it.
//////////////////////////////////////////////////////////////////////

var myGraphic:Graphic = new Graphic();
const mapPoint:MapPoint = new MapPoint();

//mapPoint.spatialReference.wkid=3003;
mapPoint.x=parentApplication.objCmpCollections.acCollectionSite[0].latitude;
mapPoint.y=parentApplication.objCmpCollections.acCollectionSite[0].longitude;;

myGraphic.geometry = mapPoint;
//myGraphic.geometry.spatialReference.wkid=3003;
myGraphic.symbol = mySymbol;
myGraphic.id = "graphic";
myGraphicsLayer.add(myGraphic);

map.scale=15000;
map.centerAt(mapPoint);

///////////////////////////////////////////////////////////////////////////

When I am debugging it in flex builder I get a 1009 null object reference error at the last line. The map correctly displays the graphic symbol in the correct place and does the scale.
So map is not null, mapPoint is not null.

Can anybody help me in pointing out this error?

Thanks a lot for your help
Paolo, Lake Como, Italy

Re: map.centerAt(mapPoint) null object reference

RobertMyers — Fri, 20 May 2011 00:54:33 GMT

Possible help http://forums.esri.com/Thread.asp?c=158&f=2421&t=276711

Re: map.centerAt(mapPoint) null object reference

RhysDonoghue — Wed, 29 Jun 2011 23:10:28 GMT

hi Paolo

Not sure if you have got your answer yet. I am a Flex newbie but my understanding is your map needs to have an extent defined first before your code will work. Let me know if you need help rhys.donoghue@splicegroup.co.nz

Rhys

topic Re: map.centerAt(mapPoint) null object reference in ArcGIS API for Flex Questions

map.centerAt(mapPoint) null object reference

Re: map.centerAt(mapPoint) null object reference

Re: map.centerAt(mapPoint) null object reference