topic Re: capture all map and layers that are existing in the application when a button is clicked in ArcGIS Web AppBuilder Questions

capture all map and layers that are existing in the application when a button is clicked

Alexwang — Fri, 05 Aug 2016 01:25:49 GMT

Hello, new to the arcgis dev. My question is how to get all base maps and operational layers with a button click on a widget? the button click should capture all map and layers that are currently existing in the application when button click is triggered. Please share the codes. Thanks,

Re: capture all map and layers that are existing in the application when a button is clicked

RobertScheitlin__GISP — Fri, 05 Aug 2016 13:00:07 GMT

Alex,

You can use the LayerInfos class in WAB:

LayerInfos class—Web AppBuilder for ArcGIS (Developer Edition) | ArcGIS for Developers

There is a code snippet in the above doc page.

Re: capture all map and layers that are existing in the application when a button is clicked

Alexwang — Fri, 05 Aug 2016 13:30:23 GMT

Always thank you for your replies, Robert.

just confirm: is LayerInfos.getInstance(this.map, this.map.itemInfo) able to catch all layers (base map tiles, graphics, feature layer, and any dynamic layers added by users)?

Re: capture all map and layers that are existing in the application when a button is clicked

RobertScheitlin__GISP — Fri, 05 Aug 2016 14:26:11 GMT

Alex,

Yes. Use getBasemapLayers function to get basemaps and getLayerInfoArray for all operational Layers