Is there a way to turn layers on and off similar to the Switching Basemaps sample?

Question

I want to use a toggle button bar to turn layers on/off similar to the Switching Basemaps sample.

I would have 3 options (zone 1, zone 2, zone 3) and would need to turn layers on/off based on the selection. I have one dynamic map service that has layers for all 3 zones...I don't want to make a map service for each.

Are there any examples/samples on how to do this?

Thanks!

DasaPaddock · Answer

This isn't possible with a single ArcGISDynamicMapServiceLayer, but you could create a separate ArcGISDynamicMapServiceLayer for each layer and then set alpha on each one.

BrendanLee · Answer

Easy enough. Got that working.

Now is there a way to set the alpha on individual layers? I want some layers to be 100% and then others to be 60%.

TonyCollins · Answer

Hi there,

Check out visibleLayers which is an ArrayCollection on your ArcGISDynamicMapServiceLayer. There should be some examples in the API samples section.
I want to use a toggle button bar to turn layers on/off similar to the Switching Basemaps sample.

I would have 3 options (zone 1, zone 2, zone 3) and would need to turn layers on/off based on the selection. I have one dynamic map service that has layers for all 3 zones...I don't want to make a map service for each.

Are there any examples/samples on how to do this?

Thanks!