[android] How can I view the shared preferences file using Android Studio?

Single or Multiple Shared Preference Files

If you have multiple Shared Preference files, then here is a good way to show all of them, but you can just pass in 1 filename, too.

• loadSharedPrefs("pref_name");

• loadSharedPrefs("shared_pref1", "shared_pref2", "shared_pref3");

Choose one of the following to suit your needs...

Single-Type Values

public void loadSharedPrefs(String ... prefs) {

    // Logging messages left in to view Shared Preferences. I filter out all logs except for ERROR; hence why I am printing error messages.

    Log.i("Loading Shared Prefs", "-----------------------------------");
    Log.i("----------------", "---------------------------------------");

    for (String pref_name: prefs) {

        SharedPreferences preference = getSharedPreferences(pref_name, MODE_PRIVATE);
        for (String key : preference.getAll().keySet()) {

            Log.i(String.format("Shared Preference : %s - %s", pref_name, key),
                  preference.getString(key, "error!"));

        }

        Log.i("----------------", "---------------------------------------");

    }

    Log.i("Finished Shared Prefs", "----------------------------------");

}

Multiple-Type Values

public void loadSharedPrefs(String ... prefs) {

    // Define default return values. These should not display, but are needed
    final String STRING_ERROR = "error!";
    final Integer INT_ERROR = -1;
    // ...
    final Set<String> SET_ERROR = new HashSet<>(1);

    // Add an item to the set
    SET_ERROR.add("Set Error!");

    // Loop through the Shared Prefs
    Log.i("Loading Shared Prefs", "-----------------------------------");
    Log.i("------------------", "-------------------------------------");

    for (String pref_name: prefs) {

        SharedPreferences preference = getSharedPreferences(pref_name, MODE_PRIVATE);
        Map<String, ?> prefMap = preference.getAll();

        Object prefObj;
        Object prefValue = null;

        for (String key : prefMap.keySet()) {

            prefObj = prefMap.get(key);

            if (prefObj instanceof String) prefValue = preference.getString(key, STRING_ERROR);
            if (prefObj instanceof Integer) prefValue = preference.getInt(key, INT_ERROR);
            // ...
            if (prefObj instanceof Set) prefValue = preference.getStringSet(key, SET_ERROR);

            Log.i(String.format("Shared Preference : %s - %s", pref_name, key),
                  String.valueOf(prefValue));

        }

        Log.i("------------------", "-------------------------------------");

    }

    Log.i("Loaded Shared Prefs", "------------------------------------");

}

}

Logcat Output

My Shared Preference values are all String, but this is the output using either of the 2 methods above...

I/Loading Shared Prefs? -----------------------------------
I/------------------? -------------------------------------
I/Shared Preference : FAVORITE - 135397? Jurassic World
I/Shared Preference : FAVORITE - 87101? Terminator Genisys
I/Shared Preference : FAVORITE - 177677? Mission: Impossible – Rogue Nation
I/------------------? -------------------------------------
I/Shared Preference : WATCHED - 177677? Mission: Impossible – Rogue Nation
I/Shared Preference : WATCHED - 157336? Interstellar
I/Shared Preference : WATCHED - 135397? Jurassic World
I/Shared Preference : WATCHED - 87101? Terminator Genisys
I/------------------? -------------------------------------
I/Shared Preference : WILL_WATCH - 211672? Minions
I/Shared Preference : WILL_WATCH - 102899? Ant-Man
I/------------------? -------------------------------------
I/Loaded Shared Prefs? ------------------------------------