Проблемы с вызовом onActivityFinished () для фрагмента

Question

Я получаю NullPointerException при попытке позвонить Fragment.onActivityResult(). Как правильно вызвать этот метод в HomeFragment?

(navigation_calendar is HomeFragment's id. Это также subfragment из "nav_host_fragment").

я получаю сообщение об ошибке:

Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void androidx.fragment.app.Fragment.onActivityResult(int, int, android.content.Intent)' on a null object reference
    at com.example.jobbkalender.MainActivity.onActivityResult(MainActivity.java:59)

MainActivity:

    @Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    Fragment homeFragment = getSupportFragmentManager().findFragmentById(R.id.navigation_calendar);
    if(requestCode == DELETE_EVENT) {
        homeFragment.onActivityResult(requestCode,resultCode,data);
    }
}

Домашний фрагмент:

    @Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    final ListView eventListView = getView().findViewById(R.id.listViewEventList);
    String date = dateToString(day,selectedMonth,selectedYear);
    List<WorkdayEvent> events = searchEvents(date);
    EventListAdapter eventListAdapter = new EventListAdapter(getContext(),0,events);
    eventListView.setAdapter(eventListAdapter);
}

EventListAdaper:

            convertView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Bundle bundle = new Bundle();
                bundle.putSerializable("EVENT",event);
                Intent intent = new Intent(mContext, ViewEvent.class);
                intent.putExtra("EVENTBUNDLE",bundle);
                Activity activity = (Activity)mContext;
                activity.startActivityForResult(intent,DELETE_EVENT);
        }
        });

РЕДАКТИРОВАТЬ: XML для nav_host_fragment:

<navigation xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/mobile_navigation"
app:startDestination="@+id/navigation_calendar">

<fragment
    android:id="@+id/navigation_calendar"
    android:name="com.example.jobbkalender.ui.home.HomeFragment"
    android:label="@string/app_name"
    tools:layout="@layout/fragment_home" />
</navigation>