TileApiHelper - NGame1/UWPGmaps.SDK GitHub Wiki
This needs a premium API Key. You can get session token using this api and then get a URI for using as MapControl Tile data source . For more information about session token and Tile API see document Here
After getting session token then you can use this code to get a URI for Tile data source :
var uri = GetMapUri(string SessionToken);
After getting URI use this code to use Google Maps Tiles on map control
Map.Style = MapStyle.None; Map.TileSources.Clear(); Map.TileSources.Add(new MapTileSource(new HttpMapTileDataSource(uri)));
# NOTE :
if you want to use Google maps in your app but you have no Premium API Key or even you don't have a standard API key use this code :
Map.Style = MapStyle.None; Map.TileSources.Clear(); Map.TileSources.Add(new MapTileSource(new HttpMapTileDataSource("http://mt1.google.com/vt/lyrs=r&hl=x-local&z={zoomlevel}&x={x}&y={y}")));