How to hide the soft navigation bar(virtual buttons) of android device for whole application?

Question

I want to hide the soft navigational bar i.e. virtual buttons of android device for whole app. I have used below code snippet

getWindow().getDecorView().setSystemUiVisibility( View.SYSTEM_UI_FLAG_IMMERSIVE
            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);

to hide it but when i slide gridview it will become visible .

Answer 1

Immersive flag for setSystemUiVisibility() lets your app go truly "full screen." Link

Try below code, for immersive mode.

@Override
public void onWindowFocusChanged(boolean hasFocus) {
super.onWindowFocusChanged(hasFocus);
if (hasFocus) {
    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 2

View decorView = getWindow().getDecorView();

// Hide both the navigation bar and the status bar.

int uiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
              | View.SYSTEM_UI_FLAG_FULLSCREEN;
decorView.setSystemUiVisibility(uiOptions);