vtm/vtm-app/res/xml/preferences.xml

<?xml version="1.0" encoding="UTF-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:oscim_app="http://app.oscim.org"
    android:title="@string/menu_preferences">

    <!--    <PreferenceCategory android:title="@string/preferences_map" > -->
    <!--
               <CheckBoxPreference
              android:key="showScaleBar"
              android:summary="@string/preferences_show_scale_bar_desc"
              android:title="@string/preferences_show_scale_bar" />
               <ListPreference
              android:defaultValue="@string/preferences_scale_bar_unit_default"
              android:dependency="showScaleBar"
              android:entries="@array/preferences_scale_bar_unit_values"
              android:entryValues="@array/preferences_scale_bar_unit_keys"
              android:key="scaleBarUnit"
              android:summary="@string/preferences_scale_bar_unit_desc"
              android:title="@string/preferences_scale_bar_unit" />
    -->


    <ListPreference
        android:defaultValue="@string/preferences_map_database_default"
        android:entries="@array/preferences_map_generator_values"
        android:entryValues="@array/preferences_map_database_keys"
        android:key="mapDatabase"
        android:summary="@string/preferences_map_view_mode_desc"
        android:title="@string/preferences_map_view_mode" />


    <!--
               <ListPreference
              android:defaultValue="@string/preferences_text_scale_default"
              android:entries="@array/preferences_text_scale_values"
              android:entryValues="@array/preferences_text_scale_keys"
              android:key="textScale"
              android:summary="@string/preferences_text_scale_desc"
              android:title="@string/preferences_text_scale" />
    -->
    <!--  </PreferenceCategory> -->

    <PreferenceCategory android:title="@string/preferences_theme_title">
        <ListPreference
            android:defaultValue="@string/preferences_map_theme_default"
            android:entries="@array/preferences_map_theme_values"
            android:entryValues="@array/preferences_map_theme_keys"
            android:key="theme"
            android:summary="@string/preferences_theme_summary"
            android:title="@string/preferences_theme" />
    </PreferenceCategory>

    <PreferenceCategory android:title="User Interface">
        <CheckBoxPreference
            android:title="Distance Touch"
            android:summary="Show Route between two Points"
            android:key="distanceTouch" />
    </PreferenceCategory>

    <PreferenceCategory android:title="Cache">
        <org.oscim.app.preferences.CacheSizePreference
            android:defaultValue="30"
            android:key="cacheSize"
            android:max="50"
            android:summary="Set tile cache size"
            android:title="Cache Size"
            oscim_app:min="1"
            oscim_app:unitsLeft=""
            oscim_app:unitsRight="MB" />

        <!-- http://stackoverflow.com/questions/5298370/how-to-add-a-button-to-a-preferencescreen-android?rq=1 -->
        <Preference
            android:key="clear_cache"
            android:summary="Delete all cached tiles"
            android:title="Clear Cache" />
    </PreferenceCategory>

    <!--
      <PreferenceCategory android:title="@string/preferences_general" >
          <CheckBoxPreference
              android:key="fullscreen"
              android:summary="@string/preferences_fullscreen_desc"
              android:title="@string/preferences_fullscreen" />
          <CheckBoxPreference
              android:key="fixOrientation"
              android:summary="@string/preferences_fix_orientation"
              android:title="@string/preferences_fix_orientation_desc" />
          <CheckBoxPreference
              android:key="wakeLock"
              android:summary="@string/preferences_wake_lock_desc"
              android:title="@string/preferences_wake_lock" />
        <CheckBoxPreference android:title="@string/preferences_cache_persistence" android:summary="@string/preferences_cache_persistence_desc"
              android:key="cachePersistence" />
          <de.sfb.pampa.preferences.CacheSizePreference
              android:title="@string/preferences_cache_size" android:summary="@string/preferences_cache_size_desc" android:key="cacheSize" />
          <de.sfb.pampa.preferences.MoveSpeedPreference
              android:title="@string/preferences_move_speed" android:summary="@string/preferences_move_speed_desc" android:key="moveSpeed" />
      </PreferenceCategory>
    -->


    <!--
      <PreferenceCategory android:title="@string/preferences_debug" >

             <CheckBoxPreference android:title="@string/preferences_show_fps_counter" android:summary="@string/preferences_show_fps_counter_desc"
              android:key="showFpsCounter" />
          <CheckBoxPreference
              android:key="drawTileFrames"
              android:summary="@string/preferences_show_tile_frames_desc"
              android:title="@string/preferences_show_tile_frames" />
          <CheckBoxPreference
              android:key="drawUnmatchedWays"
              android:summary="@string/preferences_show_unmatched_ways"
              android:title="@string/preferences_show_unmatched_ways" />
          <CheckBoxPreference
              android:key="disablePolygons"
              android:summary="@string/preferences_disable_polygons"
              android:title="@string/preferences_disable_polygons" />
          <CheckBoxPreference
              android:key="debugLabels"
              android:summary="@string/preferences_debug_labels"
              android:title="@string/preferences_debug_labels" />
      </PreferenceCategory>
    -->

</PreferenceScreen>