Hide System bars and go full screen in fragment

Question

I have been trying to make a fragment fullscreen, but almost every answer on the web has deprecated methods. Even the android official site has a deprecated method Link.

I'm using kotlin and after following this answer, I have tried this in fragment.

override fun onAttach(context: Context) {
    super.onAttach(context)
    requireActivity().window.addFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS)
}

override fun onDetach() {
    super.onDetach()
    requireActivity().window.clearFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS)
}

but the result that I got is this

You can clearly see navigation and status bars are still there.

Can you share the proper and latest way to get fullscreen in fragment?

Answer 1

If you read the docs for ViewCompat.getWindowInsetsController(), you'll see that it's only deprecated because they want you to use getInsetsController() instead. Otherwise, the sample code works just fine.

Answer 2

Can you use the theme as follows

    <style name="AppTheme"parent="Theme.MaterialComponents.DayNight.NoActionBar">
    <item name="android:windowNoTitle">true</item>
    <item name="android:windowActionBar">false</item>
    <item name="android:windowFullscreen">true</item>
    <item name="android:windowContentOverlay">@null</item>
    </style>

Answer 3

For making a fragment full-screen.

override fun onAttach(context: Context) {
    super.onAttach(context)
    WindowInsetsControllerCompat(requireActivity().window, requireActivity().window.decorView).apply { 
        
        // Hide both the status bar and the navigation bar
        hide(WindowInsetsCompat.Type.systemBars())
        
        // Behavior of system bars 
        systemBarsBehavior = WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
    }
}

Make sure to add this code in your fragment as well, it will show the system bars again.

override fun onDetach() {
    super.onDetach()
    WindowInsetsControllerCompat(requireActivity().window, requireActivity().window.decorView)
        .show(WindowInsetsCompat.Type.systemBars())
}

I don't know how WindowInsetsControllerCompat works but if anyone wants to hide system bars then this will help.