Everything I need to learn to develop an Android app like Hello English , Hello English and more successful app

Question

Which programming language? Which database is used by Zomato, Swiggy and Oyo rooms

I don't know anything about Android app development.

Please Guide me in details

How to be pro Android app developer?

Answer 1

Firstly you should learn java programming then you will learn XML.You are understand java programming then Android is easy for you.

Answer 2

Learn Java for android.
https://developer.android.com/training/basics/firstapp