I expected this code to just plain work.
mbasemap = new Basemap("https://crittersoft.maps.arcgis.com/home/webmap/viewer.html?webmap=5c7b10ac1e1c4f9ca35efbb505235625");
// create a map with the basemap
ArcGISMap map = new ArcGISMap(mbasemap);
However it fails with an exception.
"You do not have permissions to access this resource or perform this operation."
Can I not access my maps from ArcGISOnline in the Runtime? That was my whole reason for putting them in there.
This webmap is shared with Everyone.