app/backup/FileBackupHelper.html">FileBackupHelper</a></code>'s
constructor can take a variable number of filenames.  You could just as easily
have backed up both a high scores file and a game progress file just by adding
an extra parameter, like this:</p>
<pre>
    &#64;Override
    void onCreate() {
        FileBackupHelper helper = new FileBackupHelper(this, HIGH_SCORES_FILENAME, PROGRESS_FILENAME);
        addHelper(FILES_BACKUP_KEY, helper);
    }
</pre>
<p>Backing up preferences is similarly easy.  Cr