topic Re: Turning on/off a Layer in the TOC Programmatically in ArcGIS Viewer for Flex Questions

Turning on/off a Layer in the TOC Programmatically

Anonymous User — Tue, 16 Oct 2012 16:39:19 GMT

Original User: rduke40

I am trying to turn on a layer programmatically within widget code. I want to be able to trigger a layer to turn on programmatically when I click on a widget. The same action that comes from selecting a layer from the layers list is the same action I want to duplicate when selecting a particular widget from the widget list. with For example we have a Zones layer in our TOC list. When you select it, all the different zones will be highlighted on the map. I want to do the exact same thing programmatically when a widget is opened.

This is a pic of the map before the zones layer is selected: [ATTACH=CONFIG]18460[/ATTACH]

This is a pic of the map after the zones layer is selected: [ATTACH=CONFIG]18461[/ATTACH]

I want to duplicate this programmatically.

Thanks,
Ray

Re: Turning on/off a Layer in the TOC Programmatically

RhettZufelt — Tue, 16 Oct 2012 17:38:44 GMT

The SwipeSpotlight widget has the option to turn on a layer if you select it and it is not visible.

perhaps you can get the coding/ideas from that to accomplish what you want. Look in the layerChanged function and askAbout.

R_

Re: Turning on/off a Layer in the TOC Programmatically

Anonymous User — Wed, 17 Oct 2012 19:45:49 GMT

Original User: rduke40

Rzufelt,
Thanks for the reply. I have looked at Robert's Swipe/Spotlight widget and it will not provide a solution for me. I need just to have programmatic control of a sublayer and that widget is unable to do that. I saw that you have had some issues with that widget as well. Can you recommend anything else that might be beneficial? Thanks, Rzufelt.

Ray

Re: Turning on/off a Layer in the TOC Programmatically

RhettZufelt — Wed, 17 Oct 2012 23:03:14 GMT

I think Robert has fixed the "issues" with that widget.

The other issues I had were because I was trying to make it do things it was never intended to do.

I'm pretty new to this Flex stuff, but you might get some ideas here:
http://resources.arcgis.com/en/help/flex-api/samples/index.html#/Dynamic_Map_Layers_on_off/01nq0000001t000000/

R_

Re: Turning on/off a Layer in the TOC Programmatically

RhettZufelt — Tue, 30 Oct 2012 18:00:18 GMT

Ray,

Just noticed this post: http://forums.arcgis.com/threads/2106-Radio-Button-on-off-Layers?highlight=remove+listener

Thought you might get some ideas from it.

R_