So, I was developing an Android Application which uses AltBeacon Library for detecting beacons and get its advertising content, but I don't seem to find a good solution as to how I can use this library for indoor positioning, I was searching through google for some answers, and I think its a better option to use an SDK for indoor-positioning, since I need information like the geolocation(lat,long etc) which is not easy to calculate using Altbeacon, I am a bit confused on how to start this, need suggestions ?
Saying you want to make an indoor positioning system with a beacon detection library is kind of like saying you want to make a house out of a pile of bricks. While it is certainly possible, it is a huge amount of work that requires all kinds of other tools and technologies. A library lets you detect beacons is just one small thing that is needed.
Rather than taking on the huge job of trying to build one yourself, I would research a dedicated indoor positioning SDKs.
See a related question here