How to save Date and Time state of Fragment

Question

I have two EditText. First, use to open DatePicker, and the second use to open TimePicker. I have created DialogFragment for two-component. Both works.All in the Fragment.

This is my Fragment. When select DatePicker the value of Time disappears and When I select TimePicker Date also disappear. I have already saveInstance. Pls, help!! Thx

DialogFragment datePicker;
TimePickerFragment timePicker;

EditText departureEdt;
EditText departureTimeEdt;
String selectedDate;
String selectedTime;

@Override
public void onSaveInstanceState(@NonNull Bundle outState) {

    super.onSaveInstanceState(outState);
    if (outState != null) {
        outState.putString("selectedDate", selectedDate);
        outState.putString("selectedTime", selectedTime);
    }
}

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    if (savedInstanceState != null) {

        selectedDate = savedInstanceState.getString("selectedDate");
        selectedTime = savedInstanceState.getString("selectedTime");

        departureEdt.setText(selectedDate);
        departureTimeEdt.setText(selectedTime);

    }
}


@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    final FragmentManager fm = ((AppCompatActivity) getActivity()).getSupportFragmentManager();

    View view = inflater.inflate(R.layout.transportation_fragment, container, false);

    departureEdt = view.findViewById(R.id.departure_date);
    departureEdt.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            datePicker = new DatePickerFragment();
            datePicker.setTargetFragment(TransportationFragment.this, 1);
            datePicker.show(fm, "datePicker");

        }
    });


    departureTimeEdt = view.findViewById(R.id.departure_time);
    departureTimeEdt.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            timePicker = new TimePickerFragment();
            timePicker.setTargetFragment(TransportationFragment.this, 1);
            timePicker.show(fm, "timePicker");


        }
    });
    return view;
}

@Override
public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    if (requestCode == REQUEST_CODE && resultCode == Activity.RESULT_OK) {
        // get date from string
        selectedDate = data.getStringExtra("selectedDate");
        selectedTime = data.getStringExtra("selectedTime");
        // set the value of the editText
        departureEdt.setText(selectedDate);
        departureTimeEdt.setText(selectedTime);
    }
}

}