I have implemented an application Preferences Fragment using a Class that extends class PreferenceFragmentCompat.

public class SettingsFragment extends PreferenceFragmentCompat

The fragment is reading a preferences XML file called Preferences.xml

@Override 
public void onCreatePreferences(@Nullable Bundle savedInstanceState, @Nullable String rootKey) {
setPreferencesFromResource(R.xml.preferences, rootKey);
}

and using Default SharedPreferences to store the preferences.

I now want to add a second Preferences Fragment that is independent of the first one.
Let’s assume I will use a different XML file.
I already created a second SharedPreferences file (item_prefs.XML) that is not the default one, and written data into it:

    Context context = getContext();
    SharedPreferences preferences = context.getSharedPreferences("item_prefs", Context.MODE_PRIVATE);
    SharedPreferences.Editor editor = preferences.edit();
    String krd = context.getString(R.string.key_ring_duration);
    editor.putString(krd, "15Seconds");
    editor.commit();

I can’t find a way to associate my second file (item_prefs.XML) with my second Preferences fragment.
It always using the default SharedPreferences file.