Quelle  preference_headers.xml

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    app:key="pref_screen_header">
    <Preference
        app:fragment="ch.threema.app.preference.SettingsPrivacyFragment"
        app:icon="@drawable/ic_privacy_outline"
        app:key="pref_key_privacy"
        app:title="@string/prefs_privacy" />
    <Preference
        app:fragment="ch.threema.app.preference.SettingsSecurityFragment"
        app:icon="@drawable/ic_lock_outline"
        app:key="pref_key_security"
        app:persistent="true"
        app:title="@string/prefs_security" />
    <Preference
        app:fragment="ch.threema.app.preference.SettingsAppearanceFragment"
        app:icon="@drawable/ic_palette_outline"
        app:key="pref_key_appearance"
        app:persistent="true"
        app:title="@string/prefs_header_appearance" />
    <Preference
        app:fragment="ch.threema.app.preference.SettingsNotificationsFragment"
        app:icon="@drawable/ic_notifications_active_outline"
        app:key="pref_key_notifications"
        app:persistent="true"
        app:title="@string/prefs_notifications" />
    <Preference
        app:fragment="ch.threema.app.preference.SettingsChatFragment"
        app:icon="@drawable/ic_forum_outline"
        app:key="pref_key_chatdisplay"
        app:persistent="true"
        app:title="@string/prefs_chatdisplay" />
    <Preference
        app:fragment="ch.threema.app.preference.SettingsMediaFragment"
        app:icon="@drawable/ic_folder_multiple_images_outline"
        app:key="pref_key_particular_settings"
        app:persistent="true"
        app:title="@string/prefs_media_title" />
    <Preference
        app:fragment="ch.threema.app.preference.SettingsCallsFragment"
        app:icon="@drawable/ic_videocall"
        app:key="pref_key_calls"
        app:persistent="true"
        app:title="@string/prefs_title_calls" />
    <Preference
        app:fragment="ch.threema.app.preference.SettingsRateFragment"
        app:icon="@drawable/ic_star_outlined"
        app:key="@string/preferences__rate"
        app:title="@string/rate_title" />
    <Preference
        app:fragment="ch.threema.app.preference.SettingsAboutFragment"
        app:icon="@drawable/ic_about_outline"
        app:key="pref_key_about"
        app:title="@string/menu_about" />
    <Preference
        app:fragment="ch.threema.app.dev.preference.SettingsDeveloperFragment"
        app:icon="@drawable/ic_directions_bike"
        app:key="pref_key_developers"
        app:title="@string/prefs_developers" />
    <Preference
        app:icon="@drawable/icon_work_square"
        app:key="pref_key_work"
        app:layout="@layout/preference_notice_material3"
        app:summary="@string/prefs_threema_work_summary"
        app:title="@string/threema_work" />
    <Preference
        app:isPreferenceVisible="false"
        app:key="@string/preferences__referral_banner"
        app:layout="@layout/referral_banner"
        tools:isPreferenceVisible="true" />
</PreferenceScreen>