android - savedInstanceState が null でなくてもフラグメントでデータを表示できない

Question

その画面の向きが変更された後、フラグメントにデータを保存して復元したいと考えています。

そのために、「onSaveInstanceState」メソッドを使用してデータを保存します。

@Override
public void onSaveInstanceState(Bundle outState) {
    outState.putString("date", dateTextView.getText().toString());
    outState.putString("time", timeTextView.getText().toString());
    outState.putString("hour", hour);
    outState.putString("minute", minute);
    outState.putString("topicGroup", currentTopicGroup);
    outState.putString("topic", currentTopicTitle);
    outState.putString("level",currentLevelName);
    outState.putDouble("totalPrice", totalPrice);
    outState.putString("activityTitle", getActivity().getTitle().toString());
    super.onSaveInstanceState(outState);
}

しかし、以下のように「onCreateView」メソッドを使用してデータを復元/表示しようとすると、「savedInstanceState」変数が null でなくても何も起こりません (私のログには正しい値が表示されます)。

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    view = inflater.inflate(R.layout.fragment_create_new_lesson, container, false);

    timeTextView = (TextView) view.findViewById(R.id.time_picker_text_view);
    dateTextView = (TextView) view.findViewById(R.id.date_picker_text_view);
    hourSpinner = (Spinner) view.findViewById(R.id.hour_spinner);
    minuteSpinner = (Spinner) view.findViewById(R.id.minut_spinner);
    topicGroupSpinner = (Spinner) view.findViewById(R.id.topic_group_spinner);
    topicSpinner = (Spinner) view.findViewById(R.id.topic_spinner);
    levelSpinner = (Spinner) view.findViewById(R.id.level_spinner);
    totalPriceTextView = (TextView) view.findViewById(R.id.total_price_text_view);
    datePickerButton = (Button) view.findViewById(R.id.date_picker_button);
    timePickerButton = (Button) view.findViewById(R.id.time_picker_button);
    createNewLessonButton = (Button) view.findViewById(R.id.create_new_lesson_button);

    if (savedInstanceState != null) {
        String time = savedInstanceState.getString("time");
        Log.i("TIME", time);

        getActivity().setTitle(time);
        dateTextView.setText(savedInstanceState.getString("date"));
        timeTextView.setText(savedInstanceState.getString("time"));

        int hourPosition = getIndexByString(hourSpinner, savedInstanceState.getString("hour"));
        int minutePosition = getIndexByString(minuteSpinner, savedInstanceState.getString("minute"));
        int topicGroupPosition = getIndexByString(topicGroupSpinner, savedInstanceState.getString("topicGroup"));

        hourSpinner.setSelection(hourPosition);
        minuteSpinner.setSelection(minutePosition);
        topicGroupSpinner.setSelection(topicGroupPosition);
    }


    return  view;
}

私は成功せずに多くのことを試みます。誰か私に何かアドバイスはありますか？前もって感謝します。