Strange tile request

Discussion created by landsmike on Jun 9, 2014
Latest reply on Jun 17, 2014 by sgill-esristaff
In the HelloWorld example, the map access Even I did not add the layer to the MapView it always made a request to /ArcGIS/rest/services/World_Street_Map/MapServer/tile/-1/0/0.

If I have 10 different layers in the MapView, it will got 10 requests for the -1/0/0. You know that tile does not exists, so why this thing happens?