Sharing NavigationView with all the Activities?

Question

How do we share Drawer with all the activities?

In the lister: onNavigationItemSelected of setNavigationItemSelectedListener we can

Answer 1

I found the answer using this SO answer

Extending is the right way. Just override setContentView in the right way...

Answer 2

I am a bit confused here as well. After finding very little information on this I tried to extend my subclass

public class NewActivity extends MainActivity{
     ...
}

However, this alone didn't do anything. the MainActivity has a fully functioning NavigationView that will navigate to each activity..Only thing that is left is sharing it with each activity.