topic Re: xamarin forms add wmts no errors nothing is changed on the map in .NET Maps SDK Questions

xamarin forms add wmts no errors nothing is changed on the map

batkaj — Thu, 30 Sep 2021 15:46:15 GMT

here is my code. but it's displaying just basemap

Re: xamarin forms add wmts no errors nothing is changed on the map

dotMorten_esri — Thu, 30 Sep 2021 16:49:22 GMT

First check the load status of your layer (or just call `await layer.LoadAsync()` ) and inspect the error (if there is one). If it loads fine, check the LayerViewState for the layer on the MapView instance.

Re: xamarin forms add wmts no errors nothing is changed on the map

batkaj — Fri, 01 Oct 2021 07:44:23 GMT

well the LoadAsync is returning loaded . LayerViewState event is giving null.

Re: xamarin forms add wmts no errors nothing is changed on the map

dotMorten_esri — Fri, 01 Oct 2021 16:27:47 GMT

When you say the layer view state even is giving 'null' what do you mean? You should be getting events for each layer, and there is a status as well as potentially an error object. The status is the most interesting thing.

My guess is the spatial reference of your WMTS service doesn't match that of your basemap, and tiles services doesn't support reprojection. The view state should tell you if that is happening.

You can also try to remove the basemap and only have your WMTS layer, so that the map would assume the spatial reference of your WMTS layer instead.

https://developers.arcgis.com/net/api-reference/api/netwin/wpf/Esri.ArcGISRuntime.UI.Controls.GeoView.LayerViewStateChanged.html

https://developers.arcgis.com/net/api-reference/api/netwin/Esri.ArcGISRuntime/Esri.ArcGISRuntime.Mapping.LayerViewStateChangedEventArgs.html

Re: xamarin forms add wmts no errors nothing is changed on the map

MatveiStefarov — Fri, 01 Oct 2021 18:44:21 GMT

One common problem for WMTS layers not displaying is: incompatible spatial references between the Map and the layer.

Check the TileMatrixSets property of your WmtsLayerInfo -- each tile matrix set has a SpatialReference. You want to use a tile matrix set with the same spatial reference as your Map. Normally WmtsLayer will automatically choose the first compatible set (if the server has any) but you can also use the WmtsLayer constructor that takes a WmtsTileMatrixSet.

If the service does not have any WmtsTileMatrixSet compatible with the Map, you may have to use a different SpatialReference for your Map, re-publish the WMTS service with a different tile set, or use a different service type that supports reprojection (e.g. WMS or ArcGIS MapService).

Re: xamarin forms add wmts no errors nothing is changed on the map

batkaj — Sun, 03 Oct 2021 07:07:59 GMT

May be this is the case. Because the map tiles is created by Map Tiler opensource program. Ok i'll check this up.

Re: xamarin forms add wmts no errors nothing is changed on the map

batkaj — Mon, 04 Oct 2021 09:19:23 GMT

also layerstatusModels