Не могу заполнить реселлер Посмотреть внутри фрагмента

Question

Я пытаюсь заполнить окно повторной проверки внутри фрагмента, который находится внутри моей основной активности, и он не работает. Он прекрасно работает, когда я делаю это в деятельности, а не внутри фрагмента. Я думаю, что это как-то связано с контекстом, отправленным в linearLayoutManager.

Я думаю, что пытался всеми возможными способами получить контекст, такой как: getContext (), getActivity (), view.getContext (), this.getContext () ...

класс фрагмента:

@Override
    public View onCreateView(@NonNull LayoutInflater inflater, final ViewGroup container,
                             Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.shiftsview_fragment, container, false);
        recyclerView = view.findViewById(R.id.recyclerShiftsView);
        final TextView dataTV = view.findViewById(R.id.dataTV);
        LinearLayoutManager layoutManager = new LinearLayoutManager(getContext());
        recyclerView.setLayoutManager(layoutManager);
   return view;
    }
@Override
    public void onStart() {
        super.onStart();
        Query query = shiftsRef.orderBy("date", Query.Direction.DESCENDING);
        FirestoreRecyclerOptions<Shift> options = new FirestoreRecyclerOptions.Builder<Shift>()
                .setQuery(query, Shift.class)
                .build();
        mAdapter = new shiftAdapter(options);
        recyclerView.setHasFixedSize(true);
        recyclerView.setAdapter(mAdapter);
        mAdapter.startListening();
    }

    @Override
    public void onStop() {
        super.onStop();
        mAdapter.stopListening();
    }

mainActivity:

 @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        //Get fragment manager
        FragmentManager fm = getSupportFragmentManager();
        //add
        FragmentTransaction ft = fm.beginTransaction();
        Fragment frag1 = new shiftsView();
        ft.add(R.id.fragment_content_container, frag1);
        //commit change
        ft.commit();

        mAuth = FirebaseAuth.getInstance();
        user = mAuth.getCurrentUser();
        if (user != null) {
            updateUI(user);
            mDrawerLayout = findViewById(R.id.drawer_layout);
            Toolbar toolbar = findViewById(R.id.appBar);
            //setting the appBar
            setSupportActionBar(toolbar);
            //setting the menu hamburger button
            ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, mDrawerLayout, toolbar
                    , R.string.nav_open, R.string.nav_close);
            //connection the menu button to the drawer
            mDrawerLayout.addDrawerListener(toggle);
            toggle.syncState();

            //setting the drawer menu select listener
            NavigationView navigationView = findViewById(R.id.nav_drawer);
            navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
                @Override
                public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
                    // set item as selected to persist highlight
                    menuItem.setChecked(true);
                    // close drawer when item is tapped
                    mDrawerLayout.closeDrawers();

                    // Addition code here to update the UI based on the item selected
                    // For example, swap UI fragments here

                    return true;
                }
            });
        } else {
            Intent intent = new Intent(MainActivity.this, LoginActivity.class);
            finish();
            startActivity(intent);
        }
    }

адаптер:

public class shiftAdapter extends FirestoreRecyclerAdapter<Shift, shiftAdapter.shiftHolder> {
    private static final String TAG = "Shifter";

    public shiftAdapter(@NonNull FirestoreRecyclerOptions<Shift> options) {
        super(options);
    }

    @Override
    protected void onBindViewHolder(@NonNull shiftHolder holder, int position, @NonNull Shift model) {
        holder.dateTV.setText(model.getDate());
        holder.intervalTV.setText(model.intervalString());
        holder.wageTV.setText("150$");
        Log.d(TAG, "onBindViewHolder: " + model.toString());
    }

    @NonNull
    @Override
    public shiftHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        View view = LayoutInflater.from(viewGroup.getContext())
                .inflate(R.layout.single_shift_view, viewGroup, false);
        return new shiftHolder(view);
    }

    class shiftHolder extends RecyclerView.ViewHolder {

        TextView dateTV, intervalTV, wageTV;

        public shiftHolder(@NonNull View itemView) {
            super(itemView);
            dateTV = itemView.findViewById(R.id.shiftDateTV);
            intervalTV = itemView.findViewById(R.id.shiftIntervalTV);
            wageTV = itemView.findViewById(R.id.shiftWageTV);
            Log.d(TAG, "shiftHolder: ");
        }
    }
}