From http://www.jwz.org/xscreensaver/xscreensaver-5.34.tar.gz

[xscreensaver] / android / project / xscreensaver / res / values / attrs.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright 2012 Jay Weisskopf

Licensed under the MIT License (see LICENSE.txt)
-->
<resources>

    <declare-styleable name="SliderPreference">
        <attr name="android:summary" />
    </declare-styleable>

</resources>