LibreTube/app/src/main/res/xml/settings.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.preference.PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <androidx.preference.SwitchPreferenceCompat
        app:key="darkMode"
        app:title="Toggle dark mode"
        app:isPreferenceVisible="false"/>
    <ListPreference
        app:key="region"
        app:title="@string/region"
        app:entries="@array/regions"
        app:entryValues="@array/regionsValue"
        app:defaultValue="US"
        app:useSimpleSummaryProvider="true"
        />

    <ListPreference
        app:key="instance"
        app:title="@string/instances"
        app:entries="@array/instances"
        app:entryValues="@array/instancesValue"
        app:defaultValue="https://pipedapi.kavin.rocks/"
        app:useSimpleSummaryProvider="true"/>
    <androidx.preference.EditTextPreference
    app:key="customInstance"
    app:title="@string/customInstance"
        app:isPreferenceVisible="false"/>
    <androidx.preference.Preference
        app:key="login_register"
        app:title="@string/login_register"
        />
</androidx.preference.PreferenceScreen>