In ArcGIS 10.2.8 I was able to create a custom layer class that inherited ArcGISTiledMapServiceLayer, override the getTile(int level, int col, int row) function that returned a byte[] to create a map layer with a url and display it on my mapView.
I'm wondering how this can be achieved in ArcGIS 100.0.0? The ArcGISTiledMapServiceLayer doesn't exist anymore and I get an error when trying to extend the ArcGISTiledLayer.