Removing Graphics from Layer

SimChin_Siang — Mon, 06 Dec 2010 03:12:13 GMT

Hi folks,

I encountered problems removing Graphic from GraphicsLayer.

My code is as below,

if(themesArray.removeItem(tName))
{
   check = true;
}
else
{
themesArray.addItem(tName);
}

for(var i:int=1; i < response.SrchResults.length; i++)
{
var theme:Object = response.SrchResults;

var str:String = theme.XY;
var subStrIndex:int;
var x:String;
var y:String;

subStrIndex = str.search(",");


x = str.substr(0, subStrIndex);
y = str.substr(subStrIndex + 1);

var mp:MapPoint = new MapPoint(parseFloat(x), parseFloat(y), new SpatialReference(102100));

var myGraphicMarker:Graphic = new Graphic(mp,
new PictureMarkerSymbol("http://www.onemap.sg/icons/"+ tName + "/" + theme.ICON_NAME, 25, 25));

myGraphicMarker.toolTip = theme.NAME;
if(check == true)
{
gLayer.remove(myGraphicMarker);
}
else
{
gLayer.add(myGraphicMarker);
}
}
}

What i want to do is to remove graphics that is already on the map if previously had already added.
For example first time i selected something new, it will be added to the array and it will created new graphic to add to the Layer.

But if the graphics has been added previously, i want to remove it from the map instead.

Seems like gLayer.remove(myGraphicMarker); doesn't work.

Any experts can render some help?

Thanks in advanced!

Re: Removing Graphics from Layer

DasaPaddock — Mon, 06 Dec 2010 16:50:23 GMT

gLayer.remove(myGraphicMarker) requires the passed in Graphic to be the same instance as a Graphic already inside the GraphicsLayer otherwise it doesn't know which one to remove. It looks like you're creating a new instance which won't work. You could instead loop through the graphicsProvider to find the instance you want to remove and then pass that to gLayer.remove().

Re: Removing Graphics from Layer

SimChin_Siang — Thu, 09 Dec 2010 02:39:37 GMT

Thank you Dasa Paddock for the help.

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