I know about classes and objects,encapsulation,inheritance,interface,polymorphism,abstraction,static,constructor.is this enough?

Question

to make android apps?

Answer 1

No.

You have learn the Android architecture. Life cycles, Managers...

Answer 2

You know about it, but do you know how to use it in different cases?😊
It is necessary to develop the structure of your app, to know how to implement the app functions...
To find out if your knowledge is enough, try to make any simple app:
https://developer.android.com/training/basics/firstapp/creating-project.html
I hope it will also be useful:
https://developer.android.com/design/patterns/app-structure.html
https://learntocodewith.me/programming/android/beginner-app-development/

Answer 3

is this java knowledge enough?