How to add Action bar to main screen when using navcontroller?

Question

I am creating a project in which i would like to have following phenomenon. The first activity can be launched from an intent. When it is launched it has a back button on action bar. There are further destinations from this activity which i have set up using navcontroller. I have set up actionbar with navcontroller. But it removes the back button from main screen. What should i do to achieve desired result?

Answer 1

Try to enable the back button on action bar in your main activity:

 supportActionBar?.setDisplayHomeAsUpEnabled(true)