Use SharedPreferences on multi-process mode

Question

I've defined an instance of SharedPreferences that used on multi-process mode.

public class Prefs {

    private static SharedPreferences prefs;
    private static SharedPreferences.Editor editor;

    private static void init(Context context) {

        prefs = context.getSharedPreferences("alaki",
                Context.MODE_MULTI_PROCESS);
        editor = prefs.edit();
    }

// static methods to set and get preferences
}

Now I'm using this class on a service with separate process and also in my main application process in static way.
Everything is going well, but sometimes all stored data on SharedPreferences instance removed!
How can I solve this problem?

Edit: Finally I've solved my problem using by IPC.

Answer 1

Use a Content Provider which uses SharedPreferences. Example see here: https://github.com/hamsterksu/MultiprocessPreferences