Remove blue bar from where System Navigation Bar is before its removed.

import android.view.LayoutInflater;

import android.view.Menu;

import android.view.View;

import android.view.WindowInsets;

import android.widget.FrameLayout;

import android.widget.LinearLayout;

import com.android.settings.R;

import com.android.settings.SettingsActivity;

        // Hide System Nav Bar.

        SystemBarHelper.hideSystemBars(getWindow());

        LinearLayout parentView = (LinearLayout) findViewById(R.id.content_parent);

        parentView.setFitsSystemWindows(false);

        // Adjust for the Status Bar.

        parentView.setOnApplyWindowInsetsListener(new View.OnApplyWindowInsetsListener() {

                @Override

                public WindowInsets onApplyWindowInsets(View v, WindowInsets insets) {

                    parentView.setPadding(0, insets.getSystemWindowInsetTop(), 0, 0);

                    return insets;

                }

            });

        // Show SUW Nav Bar.

        NavigationBar navigationBar = (NavigationBar) findViewById(R.id.suw_navigation_bar);