Ok, sorted out, see getBounds() below, but please consider to remove not working code from official examples ...
Btw my map, at today, shows up on MapCache but is only grey squares with osmdroid ... let try again :)
PaoloC
} else if (strName instanceof GeopackageRasterTileSource) {
final GeopackageRasterTileSource src = (GeopackageRasterTileSource) strName;
mMapView.post(new Runnable() {
@Override
public void run() {
mMapView.getController().setZoom(src.getMinimumZoomLevel());
mMapView.setMinZoomLevel((double) src.getMinimumZoomLevel());
mMapView.setMaxZoomLevel((double) src.getMaximumZoomLevel());
mMapView.invalidate();
mMapView.zoomToBoundingBox(src.getBounds(), true);
}
});