Android Activity using navigation view in full screen mode shows at the bottom a grey translucent area

问题

I have an activity which is using the following method to enable fullscreen mode.

protected void hideSystemUI() {

    View decorView = getWindow().getDecorView();
    decorView.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);
}

In this activity I am also using the NavigationView and when the NavigationView is visible at the bottom(where the navigation buttons are located) a grey translucent is visible. My question is how can I hide this area.

回答1:

I solved the issue by removing the flag View.SYSTEM_UI_FLAG_LAYOUT_STABLEfrom the method hideSystemUI. Now the method looks like this:

protected void hideSystemUI() {
        View decorView = getWindow().getDecorView();
        decorView.setSystemUiVisibility(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);
}

来源：https://stackoverflow.com/questions/38008464/android-activity-using-navigation-view-in-full-screen-mode-shows-at-the-bottom-a