I have been searching for hours now but it seems that I have not found a solution to my problem. I havesuccessfully displayed the map but my problem is that I would like to hide country names, cities etc on osmdroid? Is that possible?
As already explained by user dnivra you cannot influence the style of raster tiles. But you can use a different tile provider, for example tiles.wmflabs.org/osm-no-labels provided by Wikimedia. You can view them here on the left side. Alternatively you can set up your own tile server allowing you to use your own styles.