topic Selected symbol not changing color in ArcGIS JavaScript Maps SDK Questions

Selected symbol not changing color

KarstenRank — Fri, 10 Dec 2021 21:21:41 GMT

Hi there,

I want to change the selected symbols depending on the geometry of the feature layer. My code looks like that:

switch (geoType) {
 case "esriGeometryPoint":
 selectionSymbol = new SimpleMarkerSymbol(SimpleMarkerSymbol.STYLE_CIRCLE, 20);
 break;
 
 case "esriGeometryPolygon":
layer.selectionSymbol = new SimpleFillSymbol(SimpleFillSymbol.STYLE_SOLID,
 new SimpleLineSymbol(SimpleLineSymbol.STYLE_DASHDOT,
 new Color([255, 120, 0]), 2), new Color([255, 255, 0, 0.5]));
 break;
 
 case "esriGeometryPolyline":
layer.selectionSymbol = new CartographicLineSymbol(CartographicLineSymbol.STYLE_SOLID, new Color([255,255,255,1]), 2);
 
 }

layer.setSelectionSymbol(selectionSymbol);‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

The marker symbol for point geometry changes, the others get transparent?

Where is the error?

Thank you

Karsten

Re: Selected symbol not changing color

KenBuja — Fri, 10 Dec 2021 21:21:43 GMT

For the point case, you use

selectionSymbol = new ...‍‍

but the polyline and polygon cases, you use

layer.selectionSymbol = new ‍‍

You have to use

selectionSymbol = new‍‍

for these cases since "layer.selectionSymbol" is not the same as "selectionSymbol". Otherwise, you're creating a new property on the "layer" variable instead of setting a new value for the "selectionSymbol" variable. Since "selectionSymbol" is not being set in those two cases, a null value will be set in the setSelectionSymbol method at the end of your code fragment.

Re: Selected symbol not changing color

KarstenRank — Tue, 20 Sep 2016 19:08:12 GMT

Hello Ken,

thank you for the help. Now it works!