topic How to clear dynamically created feature layer in Web AppBuilder Custom Widgets Questions

How to clear dynamically created feature layer

SivaramKrishnan2 — Tue, 24 Apr 2018 11:46:26 GMT

I am creating dynamic feature class in Widget A and added the layer in the map successfully . When I open Widget B, I want to clear the dynamic feature class which was created in Widget A. How to Proceed?

Thanks & Regards

Siva

Re: How to clear dynamically created feature layer

RobertScheitlin__GISP — Tue, 24 Apr 2018 11:50:19 GMT

Sivaram,

That really depends on how you created the dynamic feature class in Widget A. If you added a graphicsLayer or a FeatureLayer, or added Graphics to the maps Graphics. A FeatureLayer has a clear method and so does all GraphicsLayers.

Re: How to clear dynamically created feature layer

SivaramKrishnan2 — Tue, 24 Apr 2018 12:08:16 GMT

Robert,

Thanks for the response, I'm adding the layer as a Feature layer only.

please refer the screenshot.

Regards

Siva

Re: How to clear dynamically created feature layer

RobertScheitlin__GISP — Sun, 12 Dec 2021 10:55:53 GMT

Siva,

So in your code you should assign a unique id to the FeatureLayer.

this.dynamicFL.id = 'myDynamicFL';‍

and then in your widget B you get that layer using

this.dynamicFL = this.map.getLayer(this.map.graphicsLayerIds.indexOf('myDynamicFL'));
this.dynamicFL.clear();‍‍‍‍‍‍

Re: How to clear dynamically created feature layer

SivaramKrishnan2 — Sun, 12 Dec 2021 10:55:56 GMT

Robert

Thank you so much for your response, it worked for me after doing some small changes.

this.dynamicFL = this.map.getLayer(this.map.graphicsLayerIds.indexOf('myDynamicFL'));//this will return the index only not the layer so dynamicFL becomes undefined.

so i modified the code to get the layer of that index

Thanks & Regards

Siva