topic Re: Select Graphics from a Graphicslayer in ArcGIS API for Flex Questions

Select Graphics from a Graphicslayer

sreeharikottoormadam — Tue, 08 Feb 2011 09:21:25 GMT

I am adding a graphics layer from a featurelayer upon loading the application. I need to implement a cutom identify for the graphics layer. I am able to select graphics with in extent, but need to select a graphics while clicking on map. can anybody help me in this.......

private function ShowIdentify():void{

jnjMap.addEventListener(MapMouseEvent.MAP_CLICK,IdentifyFunction);

}

protected function IdentifyFunction(event:MapMouseEvent):void
{


var selGraphic:Graphic;
var ext:Number = jnjMap.extent.width / jnjMap.width * 5;
var x:Number = event.mapPoint.x;
var y:Number = event.mapPoint.y;
var queryExtent:Extent = new Extent(x - ext, y - ext, x + ext, y + ext, event.mapPoint.spatialReference);
var identifyResults:ArrayCollection = new ArrayCollection;
var Identifygraphic:Graphic;
var storeInfo:StoreInfoWindow ;

// var ac:ArrayCollection = myGraphicsLayer.graphicProvider as ArrayCollection;

//Stuck up here ....     😞

//Get the selected extent
if (queryExtent.contains(MapPoint(selGraphic.geometry)))
{

selGraphic.symbol = highlightedSymbol;
identifyResults.addItem(selGraphic.attributes.CITY_NAME);
}
//else if point was previously highlighted, reset its symbology
else if (selGraphic.symbol == highlightedSymbol)
{

selGraphic.symbol = defaultSymbol;
}
selectionGraphicsLayer.add(selGraphic);

Thanks!

Re: Select Graphics from a Graphicslayer

IvanBespalov — Wed, 09 Feb 2011 06:58:53 GMT

2 ways "to select a graphics while clicking on map":

1 - "I am able to select graphics with in extent" - create extent from MapPoint coordinates you clicked on map

newextent.minx = mappoint.xvalue -10
newextent.miny = mappoint.yvalue -10
newextent.maxx = mappoint.xvalue +10
newextent.maxy = mappoint.xvalue +10

2 - Do not add MapMouseEvent, but use MouseEvent

var gra:Graphic = your graphic; //
gra.addEventListener(MouseEvent.CLICK, graphicClicked);

private function graphicClicked(event:MouseEvent):void
{
var gra:Graphic = event.target as Graphic;
// do something
}

Re: Select Graphics from a Graphicslayer

sreeharikottoormadam — Mon, 14 Feb 2011 07:17:47 GMT

hi Ivan,

Thanks alot..... 🙂