toggling map symbols

[HamzaHaroon]

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?

[FrankLin1]

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

[HamzaHaroon]

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.

[NimeshJarecha · Accepted solution]

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

Regards,
Nimesh

[HamzaHaroon]

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

[HamzaHaroon]

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