Android Default Shared Preferences File Readable By Multiple Apps?

How can I have a shared prefere开发者_JAVA技巧nces file that can be read by more than one app. In particular by an admin app and the app it is administrating?

Have you tried getSharedPreferences() with MODE_WORLD_WRITEABLE (assuming that both apps are supposed to be able to write to it)? One of the apps will have to create a context using the package of the other app.