从视图持有者查询未在某些位置加载数据

Question

我有一个相对简单的recyclerview设置。在我的片段中，我查询Firestore以获取用户输入的一些预选值。这些值之一实际上是同一Firebase实例中引用餐厅名称的另一个集合中的集合ID。我不想显示ID，而是要显示ID所属餐厅的名称。

现在在viewholder方法中，我查询其他集合以获取餐厅名称。

这是我最初查询的一部分：

mealplanDetailsArrayList = new ArrayList<>();
        mealplanReference = firebaseFirestore.collection("Customer_Data").document(userId).collection("Meal_Plans");

        mealplanReference.get().addOnSuccessListener(new OnSuccessListener<QuerySnapshot>() {
            @Override
            public void onSuccess(QuerySnapshot queryDocumentSnapshots) {
                for (QueryDocumentSnapshot document : queryDocumentSnapshots) {
                    MealplanDetails mealplanDetails = document.toObject(MealplanDetails.class);
                    mealplanDetailsArrayList.add(mealplanDetails);

                    mealPlanDetailsAdapter = new MealPlanDetailsAdapter(mealplanContext, mealplanDetailsArrayList);
                    mealplanRecycler.setAdapter(mealPlanDetailsAdapter);
                }
            }
        }).addOnFailureListener(new OnFailureListener() {
            @Override
            public void onFailure(@NonNull Exception e) {
                Log.d(TAG, "on failure error:"+e);
            }
        });

这是我的适配器：

public class MealPlanDetailsAdapter extends RecyclerView.Adapter<MealPlanDetailsAdapter.MealPlanDetailsViewHolder> {

    private Context adapterContext;
    private ArrayList<MealplanDetails> mealplanDetailsArrayList;
    private String restaurantName;

    private final static String TAG = MealPlanDetailsAdapter.class.getSimpleName();

    public MealPlanDetailsAdapter(Context adapterContext, ArrayList<MealplanDetails> mealplanDetailsArrayList) {
        this.mealplanDetailsArrayList = mealplanDetailsArrayList;
        this.adapterContext = adapterContext;
    }

    @NonNull
    @Override
    public MealPlanDetailsAdapter.MealPlanDetailsViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        LayoutInflater layoutInflater = LayoutInflater.from(adapterContext);
        View view = layoutInflater.inflate(R.layout.mealplan_card, viewGroup, false);
        return new MealPlanDetailsViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull MealPlanDetailsAdapter.MealPlanDetailsViewHolder mpDetailsViewHolder, int position) {

        // Set restaurant name
        mpDetailsViewHolder.tvRestaurant.setText(getRestaurantName(mealplanDetailsArrayList.get(position).getRestaurantId()));
        Log.d(TAG, "restaurantId:" + mealplanDetailsArrayList.get(position).getRestaurantId() + " " + position);

    }

    private String getRestaurantName(final String restaurantId) {
        FirebaseFirestore firebaseFirestore = FirebaseFirestore.getInstance();
        CollectionReference restaurantReference = firebaseFirestore.collection("Restaurant_Data");
        restaurantReference.get().addOnSuccessListener(new OnSuccessListener<QuerySnapshot>() {
            @Override
            public void onSuccess(QuerySnapshot queryDocumentSnapshots) {
                for (QueryDocumentSnapshot documentSnapshot : queryDocumentSnapshots) {
                    if (documentSnapshot.getId().equals(restaurantId)) {
                        restaurantName = documentSnapshot.getString("restaurantName");
                    }
                }
            }
        });
        return restaurantName;
    }

    @Override
    public int getItemCount() {
        return mealplanDetailsArrayList.size();
    }

    class MealPlanDetailsViewHolder extends RecyclerView.ViewHolder {

        public TextView tvRestaurant;

        public MealPlanDetailsViewHolder(@NonNull View itemView) {
            super(itemView);

            tvRestaurant = itemView.findViewById(R.id.tv_restaurant);
        }
    }
}

为了简单起见，为了简便起见，我删除了我正在加载到Viewholder中的其他一些数据，但没有任何问题，但是发生的是，在某些位置，我从查询中获得的餐厅名称（我正在适配器中进行操作）类）没有显示。该textview显示为空白。

有人知道为什么会发生这种情况以及如何解决吗？