Completely remove actionbar navigation bar etc in Android app

Question

I need to completely remove the actionbarr and navigationbar from my app. So I stay in fullscreen without the possibility to swipe so I get the navigationbar back.

I have now this code in my onreate method which makes it go away but as soon as you swipe the navigation bar will appear again. How can I avoid this?

getWindow().getDecorView().setSystemUiVisibility(
        View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_FULLSCREEN
                | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);

Answer 1

• On your activity override onBackPressed() to prevent activity from going back when back button is pressed. By default it runs finish() method if there is no backStack to run through.

• On your App theme for the activity, make sure it's a theme that has NoActionBar on it that way it won't have one unless you put one into layout.

style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar"