How much java i need to know to build an android app?

Question

I'm a beginner python programmer.. I played with python for quite some time now and looked at sl4a which is a scripting layer for python on Android. I want to build an android app using native java and would like to know how much java I should know to build a native app..

Answer 1

you need the basics
including oop

you also have to learn
android concepts

Answer 2

👆 see my answer there

Answer 3

https://www.sololearn.com/Discuss/451901/?ref=app

Answer 4

it has some concepts like
services etc proper to it

Answer 5

Android has its own language?