How can i change value ListPreference from another Activity

Question

I have Activity for ListPreference and i can change any values in it, but my question i want to change a value in ListPreference first time without the user enters to activity that there is ListPreference. First time a user enters to an app i want to save default value depend on location the user.

Answer 1

I found the solution

SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getActivity());
        SharedPreferences.Editor editor = sharedPreferences.edit();
        editor.putString(getString(R.string.settings_method_key),repear);
        editor.commit();