topic Re: Adding multiple layers from a map server (points, lines, and polgons.) in Kotlin Maps SDK Questions

Adding multiple layers from a map server (points, lines, and polgons.)

klebercj — Mon, 31 Jul 2023 22:35:11 GMT

I have a map server url from an ArcGIS REST Services. The ......../MapServer url contains 35 layers of point, line, and polygon features. I need to bring in all of them and have the ability to turn each on on and off. I know I can bring in each one individually, but that's 35 variables for each individual url (..../MapServer/0, 1, 2 etc...)

Right now I only know how to utilize the method shown in this turorial; https://developers.arcgis.com/kotlin/layers/tutorials/add-a-feature-layer/

Is there a way crawl the top level MapServer url and bring in the 35 layers, but still be able to individually control each layer i.e. make visible / invisible?

Re: Adding multiple layers from a map server (points, lines, and polgons.)

PuneetPrakash — Wed, 02 Aug 2023 18:08:41 GMT

You can add the top level MapServer url as an ArcGISMapImageLayer https://developers.arcgis.com/kotlin/api-reference/arcgis-maps-kotlin/com.arcgismaps.mapping.layers/-arc-g-i-s-map-image-layer/index.html

After that you can control each Sublayer's properties. You can see the API usage with this Android Java sample.
https://github.com/Esri/arcgis-runtime-samples-android/blob/main/java/change-sublayer-visibility/src/main/java/com/esri/arcgisruntime/sample/mapimagelayersublayervisibility/MainActivity.java

https://developers.arcgis.com/kotlin/api-reference/arcgis-maps-kotlin/com.arcgismaps.mapping.layers/-arc-g-i-s-sublayer/index.html#-1515161094%2FProperties%2F1086730362

Re: Adding multiple layers from a map server (points, lines, and polgons.)

klebercj — Thu, 03 Aug 2023 16:35:30 GMT

Yesterday I was able to create a block of code as follows

// create a map with the BasemapStyle topographic
val map = ArcGISMap(BasemapStyle.ArcGISImagery)

// Create an ArcGIS Map Image Layer for the ESRI map server layer
val mapServiceUrl = "https://.../MapServer"
val mapImageLayer = ArcGISMapImageLayer(mapServiceUrl)

// load sublayers of mapServiceUrl
val hospitalSublayer = ArcGISMapImageSublayer(1).apply {name = "Hospital"}

.......list of 35 sublayers

// create a group layer from scratch by adding the Sublayers as children
val mapSublayers = GroupLayer().apply {
name ="Group Base Map"
addAll(arrayListOf(, hospitalSublayer, ...35 sublayers listed out))
}

basemap.operationalLayers.add(mapImageLayer)
basemap.operationalLayers.add(mapSublayers)

I'm getting an error at "name ='Group Base Map'" where Android Studio throws "Val cannot be reassigned." AS highlights "name" in the list block of 35 sub-layers where I load sublayers of mapServiceUrl.