How to use

getPreferenceScreen

method

in

android.preference.PreferenceFragment

public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
  Fragment fragment = getFragmentManager().findFragmentByTag(FRAGMENT_TAG);
  if (fragment instanceof PreferenceFragment) {
    initSummary(((PreferenceFragment) fragment).getPreferenceScreen());
  }
}

  @Override
  protected void afterHookedMethod(MethodHookParam param) throws Throwable {
    PreferenceFragment fragment = (PreferenceFragment) param.thisObject;
    if (XposedHelpers.getAdditionalInstanceField(fragment, KEY_APP_DETAILS_CATEGORY) == null) {
      Activity context = fragment.getActivity();
      ResourceUtils res = ResourceUtils.getInstance(context);
      PreferenceScreen root = fragment.getPreferenceScreen();
      PreferenceCategory storeCat = new PreferenceCategory(context);
      storeCat.setTitle(res.getString(R.string.store));
      root.addPreference(storeCat);
      Preference appDetailsPreference = new Preference(context);
      appDetailsPreference.setTitle(res.getString(R.string.app_details));
      appDetailsPreference.setEnabled(false);
      appDetailsPreference.setKey(KEY_APP_DETAILS);
      storeCat.addPreference(appDetailsPreference);
      XposedHelpers.setAdditionalInstanceField(fragment, KEY_APP_DETAILS_CATEGORY, storeCat);
    }
  }
};