topic Re: toggling map symbols in ArcGIS Runtime SDK for iOS Questions

toggling map symbols

HamzaHaroon — Mon, 10 Sep 2012 12:53:27 GMT

i have my legend using story board. i want to put a switch in the legend to toggle the map icons on and off. all of my map symbols are of the AGSDynamicMapServicelLayer class. how do i attach a button with each of the symbols so that when the button/switch is pressed, the symbols on the map appear, and dissappear?

Re: toggling map symbols

FrankLin1 — Mon, 10 Sep 2012 13:41:30 GMT

I think it's not possible by AGSDynamicServiceMapLayer , AGSDynamicLayerView is just a subclass of UIImageView and what you see on the AGSMapView is an image without any attribute.

If I were you , I would use AGSGraphicsLayer to add those symbols , by "graphic in [AGSGraphicsLayer graphics]" can access symbol.

Frank

Re: toggling map symbols

HamzaHaroon — Mon, 10 Sep 2012 14:09:39 GMT

i dont add the symbols myself. they come through a service. they are pretty much icons on the map. if i were to change them to somehow add as a graphics layer, i would have to change alot of code in my app. i added the switch in the legend, just need a way to make each type of icon appear and dissappear on the map.

Re: toggling map symbols

NimeshJarecha — Tue, 11 Sep 2012 16:01:02 GMT

You should set the layerDefinitions on AGSDynamicMapServiceLayer so that features with those symbol are not visible and refresh the layer.

Regards,
Nimesh

Re: toggling map symbols

HamzaHaroon — Tue, 11 Sep 2012 16:58:39 GMT

is there any example/sample of doing this? right now my legend is setup similar to the legend sample, except its using storyboard.

Re: toggling map symbols

HamzaHaroon — Thu, 13 Sep 2012 18:44:22 GMT

thanks nimesh. layerdefinitions worked. i made an array that was edited from the swith buttons and passed that to the dynamicMapServiceLayer.