Hi Nikhil,
First of all, I am extremely sorry for being so late to answer your question. It’s glad to know that you have got such good android skills as a BCA student.
It’s not necessary to pursue another Degree for being an Android Developer. You can hone your skills in BCA itself and save a lot of money.
However, having a Master’s degree wouldn’t hurt ever. Additionally, it will give you full exposure in the corporate world whenever its time for the promotion or assigning extra responsibilities.
Even you may not be considered an appropriate person to lead a project sometimes if you will only have a Bachelor’s degree. But yes exceptions are always there if you are exceptionally good, then definitely you will be the one always chosen for the task.
Another good reason to opt for MCA is it will help to understand many other things along with Android development thoroughly which you might not have understood yet.