[closed] Save maps for offline usage in Android using OSMDroid

I am very new to OSM this could be a noob question also.

So I have implemented basic OSM using OSMDroid library. But my main aim is to save the maps (from Internet) and then loading it (from SD Card) offline. Although there are ample examples on How to load offline maps. Basic premise of those tutorial is to use Mobile Altas Creator on a desktop to save the maps, and then transfer them to phone's SD Card and then load them offline.

What I want to do is, I want the saving of the maps in Andoid itself. So is this possible to save maps in Android?