Android Fragment - Hide permanentrly navigation Bar opening BottomSheetFrag or always

Question

I'm working on a full Landscape project. I need all the time to hide manually Navigation Bar. Opening new fragment all work perfectly calling following util on onResume method:

        fun systemUiVisibility(activity: Activity) {
        activity.window.decorView.systemUiVisibility = (
                View.SYSTEM_UI_FLAG_IMMERSIVE
                        or View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                        or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                        or View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                        or View.SYSTEM_UI_FLAG_FULLSCREEN
                        or View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
                )
        activity.window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
    }

When I open several items, such as Bottom sheet Fragment and others, the navigation bar is displayed again. Is there any way to permanently hide it anywhere?

are you calling in onWindowFocusChanged and onCreate before super.onCreate? — hemen, Jul 17 '20 at 11:54
it may be duplicate [first link](https://stackoverflow.com/questions/21164836/immersive-mode-navigation-becomes-sticky-after-volume-press-or-minimise-restore) and [second link](https://stackoverflow.com/questions/21724420/how-to-hide-navigation-bar-permanently-in-android-activity) — hassan moradnezhad, Jul 17 '20 at 12:08

score 0 · Answer 1 · answered Jul 17 '20 at 12:22

In my case, it was enough to override these two methods:

override fun onResume()
{
    super.onResume()
    window.decorView.systemUiVisibility = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION or View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
}

override fun onWindowFocusChanged(hasFocus: Boolean)
{
    super.onWindowFocusChanged(hasFocus)
    window.decorView.systemUiVisibility = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION or View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
}

but I am not sure if it will protect You from every scenario.

That's not help me. Opening BottomSheetFragment Navigation Bar is always visible — DoctorWho, Jul 17 '20 at 12:31

Android Fragment - Hide permanentrly navigation Bar opening BottomSheetFrag or always

1 Answers1