Android: Retrieving shared preferences of other application

Question

I have a settings application from which i have to retrieve other applications preferences, but i don\'t have the details of keys in them, how can i retrieve all the availab

Answer 1

It's simple to retrieve store shared preferences data of one application to another application.

Step 1: add the same android:sharedUserId="android.uid.shared" in both app's manifest files.

Step 2: Store Value application1

 SharedPreferences preferences = context.getSharedPreferences("token_id",    Context.MODE_WORLD_READABLE);
        Editor editor = preferences.edit();
        editor.putString("shared_token", encryptedValue);
        Log.e("aaa *** shared_token : ", encryptedValue.toString());
        editor.commit();

Step 3: Get Value From application2

Context con = null;
        try {
            con = createPackageContext("application2 package name", Context.CONTEXT_IGNORE_SECURITY);
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }

        try {
            if (con != null) {
                SharedPreferences pref = con.getSharedPreferences(
                        "token_id", Context.MODE_WORLD_READABLE);

                String data = pref.getString("shared_token", "");
                Log.d("msg", "Other App Data: " + data);
            } else {
                Log.d("msg", "Other App Data: Context null");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }