fedilab-Android-App/app/src/main/res/xml/pref_theming.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"
    android:layout_width="match_parent"
    android:layout_height="match_parent">


    <ListPreference
        app:defaultValue="SYSTEM"
        app:dialogTitle="@string/type_of_theme"
        app:entries="@array/set_theme_mode_value"
        app:entryValues="@array/SET_THEME_MODE_VALUE"
        app:iconSpaceReserved="false"
        app:key="@string/SET_THEME_BASE"
        app:title="@string/type_of_theme"
        app:useSimpleSummaryProvider="true" />

    <Preference
        app:iconSpaceReserved="false"
        app:key="launch_custom_theme"
        app:summary="@string/pref_customize_summary"
        app:title="@string/pref_customize" />


    <Preference
        app:iconSpaceReserved="false"
        app:key="contributors_themes"
        app:summary="@string/pref_contributor_summary"
        app:title="@string/pref_contributor" />

    <androidx.preference.PreferenceCategory
        android:key="cyanea_preference_category"
        android:title="@string/customize_timelines"
        app:iconSpaceReserved="false">

        <Preference
            app:iconSpaceReserved="false"
            app:key="reset_pref"
            app:summary="@string/clik_reset"
            app:title="@string/reset_color" />

        <Preference
            app:iconSpaceReserved="false"
            app:key="pref_import"
            app:summary="@string/import_theme_title"
            app:title="@string/import_theme" />

        <Preference
            app:iconSpaceReserved="false"
            app:key="pref_export"
            app:summary="@string/export_theme_title"
            app:title="@string/export_theme" />

    </androidx.preference.PreferenceCategory>
</androidx.preference.PreferenceScreen>