[SOLVED] No data from Firestore displayed in the recycler view

I started with Firestore and I created a collection MealsDev containing one element. I cannot display it in a recycler view. May you help with it?

In the meantime I have already checked other posts, but I didn't find what I'm doing wrong. The permission on Firebase is set to

allow read, write: if true;

MealsFragment.java:

public class MealsFragment extends Fragment {
private FragmentMealsBinding binding;
String collectionPath= "MealsDev";
DummyRecyclerAdapter dummyRecyclerAdapter;
RecyclerView dummyRecyclerView;


@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

    binding = FragmentMealsBinding.inflate(inflater, container, false);
    View root = binding.getRoot();
    dummyRecyclerView = root.findViewById(R.id.meals_recycler_view);
    FirebaseFirestore db = FirebaseFirestore.getInstance();
    Query query = db.collection(collectionPath).limit(10);
    FirestoreRecyclerOptions<DummyMeal> options = new FirestoreRecyclerOptions.Builder<DummyMeal>()
            .setQuery(query, DummyMeal.class)
            .build();

    dummyRecyclerAdapter = new DummyRecyclerAdapter(options);
    dummyRecyclerView.setAdapter(dummyRecyclerAdapter);
   
    return root;
}

@Override
public void onDestroy() {
    super.onDestroy();
    binding = null;
}

@Override
public void onStart() {
    super.onStart();
    dummyRecyclerAdapter.startListening();
}

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

}

DummyMeal.java

public class DummyMeal {
    String name;

    public DummyMeal() {
    }

    public DummyMeal(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

DummyRecyclerAdapter.java

public class DummyRecyclerAdapter extends FirestoreRecyclerAdapter<DummyMeal, DummyRecyclerAdapter.RecyclerDummyViewHolder> {
public DummyRecyclerAdapter(@NonNull FirestoreRecyclerOptions<DummyMeal> options){
    super(options);
}

    @Override
    protected void onBindViewHolder(@NonNull DummyRecyclerAdapter.RecyclerDummyViewHolder holder, int position, @NonNull DummyMeal model) {
        String name = model.getName();
        holder.name.setText(name);
    }

    @NonNull
    @Override
    public DummyRecyclerAdapter.RecyclerDummyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.recycler_view_row_current_meal, parent, false);

        return new RecyclerDummyViewHolder(view);
    }

    public class RecyclerDummyViewHolder extends RecyclerView.ViewHolder {
        TextView name;

        public RecyclerDummyViewHolder(View view) {
            super(view);
            name = view.findViewById(R.id.text_view_meal_name);
        }


    }
}

recycler_view_row_current_meal.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">
    <ImageView
        android:id="@+id/image_view_current_meal"
        android:layout_width="0dp"
        android:layout_weight="1"
        android:layout_height="80dp"/>
    <LinearLayout
        android:layout_width="0dp"
        android:layout_weight="1"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:weightSum="3">
        <TextView
            android:id="@+id/text_view_meal_name"
            android:layout_width="wrap_content"
            android:layout_height="0dp"
            android:layout_weight="2"
            android:textSize="18dp"
            />
        <TextView
            android:id="@+id/text_view_meal_added_date"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"
            />
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">
            <TextView
                android:id="@+id/text_view_day_of_week"
                android:layout_width="0dp"
                android:layout_weight="1"
                android:layout_height="wrap_content"
                
                                />
            <TextView
                android:id="@+id/text_view_meal_week"
                android:layout_width="0dp"
                android:layout_weight="1"
                android:layout_height="wrap_content"
                
                android:textAlignment="viewEnd"
            />
        </LinearLayout>
    </LinearLayout>

</LinearLayout>

fragment_meals.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/fragment_meals_layout"
   >
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="To jest test"/>
    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/meals_recycler_view"
         android:layout_height="wrap_content"
         android:layout_width="match_parent"/>
</FrameLayout>

UPDATE: My aim is to display (in this case) a single record in the recycler view.

The debugger doesn't break if I set breakpoints in onBindViewHolder and onCreateViewHolder. I debugged the service once again setting a breakpoint in MealsFragment after a FirestoreRecyclerOptions in initialized. It seems that the mSnapshot size is equal to 0. It should be 1 as far as I understand it. Maybe this is the problem? Why?

UPDATE 2: I run the application on a mobile using Android 11 RP1A. In the logs I can see a warning and an error related to GMS. I don't know if this is related. I'm almost sure the data is not displayed due to a problem with a query. Here are the entries from the log:

Failed to register com.google.android.gms.providerinstaller#com.google.android.gms
 dswf: 17: 17: API: Phenotype.API is not available on this device. Connection failed with: ConnectionResult{statusCode=DEVELOPER_ERROR, resolution=null, message=null}

and then the error:

Failed to get service from broker. 
java.lang.SecurityException: Unknown calling package name 'com.google.android.gms'.
at android.os.Parcel.createExceptionOrNull(Parcel.java:2376)
(...)