res/xml/gesture_settings.xml

<?xml version="1.0" encoding="utf-8"?>
<!--  Copyright (C) 2018 The OmniROM Project

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 -->
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
        android:key="gesture_settings"
        android:title="@string/gesture_settings_title" >

        <org.omnirom.omnilib.preference.SystemSettingSwitchPreference
            android:key="use_bottom_gesture_navigation"
            android:title="@string/use_bottom_gesture_title"
            android:summary="@string/use_bottom_gesture_summary"
            android:defaultValue="false" />

</PreferenceScreen>