topic Re: Is there any replacement for ImageryTileLayer? in ArcGIS Runtime SDK for iOS Questions

Is there any replacement for ImageryTileLayer?

AndriyFedin — Fri, 26 Aug 2022 14:42:01 GMT

My fellow web developers use ImageryTileLayer from ArcGIS API for JavaScript. I was unable to find anything similar in iOS SDK. How do we replace ImageryTileLayer?

Re: Is there any replacement for ImageryTileLayer?

MichaelBranscomb — Fri, 26 Aug 2022 16:24:55 GMT

The equivalent in ArcGIS Runtime is the AGSImageServiceRaster class, which you display via the AGSRasterLayer class:

Add raster data | ArcGIS Runtime API for iOS | ArcGIS Developers

ArcGIS Runtime SDK for iOS: AGSImageServiceRaster Class Reference

ArcGIS Runtime SDK for iOS: AGSRasterLayer Class Reference

Re: Is there any replacement for ImageryTileLayer?

AndriyFedin — Tue, 30 Aug 2022 13:43:48 GMT

Hi, Michael!
Thank you for your reply!

I tried to use the AGSRasterLayer & AGSImageServiceRaster, but it doesn't work for me. When I use image service URL from the AGSRasterLayer example on github, it works fine, but when I try the URL my teammates use on the web with ImageryTileLayer, the layer is not displayed.
I also noticed, that the ImageServer info structure and attributes differ between these URLs.

example URL:
https://gis.ngdc.noaa.gov/arcgis/rest/services/bag_hillshades_subsets/ImageServer

URL we use: https://tiledimageservices.arcgis.com/P3ePLMYs2RVChkJx/arcgis/rest/services/GEBCO_2021_Bathymetry/ImageServer

So it brings us back to the original question: maybe I should use other layer class?

Re: Is there any replacement for ImageryTileLayer?

MichaelBranscomb — Tue, 30 Aug 2022 16:34:45 GMT

Hi,

I just gave this a try with another Runtime SDK - .NET - and it worked fine. But I noted:

I did have to wait some time for the service to initially display.
It was necessary to zoom in beyond the layer full extent before the layer was noticeably visible, although you may know what you're looking for.
I'm currently using a Developer license (i.e. no license is set) - are you running in developer mode or have to set a license?

Map = new Map(BasemapStyle.ArcGISDarkGray); ImageServiceRaster imageServiceRaster = new ImageServiceRaster(new Uri("https://gis.ngdc.noaa.gov/arcgis/rest/services/bag_hillshades_subsets/ImageServer")); RasterLayer rasterLayer = new RasterLayer(imageServiceRaster); await rasterLayer.LoadAsync(); Map.InitialViewpoint = new Viewpoint(rasterLayer.FullExtent); Map.OperationalLayers.Add(rasterLayer);

Thanks

Re: Is there any replacement for ImageryTileLayer?

AndriyFedin — Wed, 31 Aug 2022 12:31:25 GMT

Hi, @MichaelBranscomb!

The URL in your code sample works for me too, but this one doesn't.

According to Nicholas-Furness in this answer, the issue is related to LERC format, which is not supported for visualization by the runtime.