Is it possible to have multiple Shared Preferences per app? If you create a PreferenceActivity, the values by default are persisted to /data/data/[PACKAGE_NAME]/shared_prefs
Sure:
If you use PreferenceManager.getDefaultSharedPreferences(context); it will create the file you mention.
If you use context.getSharedPreferences("OtherPrefs", Context.MODE_PRIVATE); it will create a file (and SharedPreferences object) in /data/data/[PACKAGE_NAME]/shared_prefs/OtherPrefs.xml.