com.google.firebase.database.DatabaseException: Can't convert object of type java.lang.Long to type com.example.recipely.ingredientAdapter

Question

使用片段将数据从 firebase 检索到 RecyclerView 时出现此错误。

E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.recipely, PID: 24403 com.google.firebase.database.DatabaseException: Can't convert object of type java.lang.Long to type com.example.recipely.ingredientAdapter

冰箱.java

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    ingredientView = inflater.inflate(R.layout.fragment_fridge, container, false);
    
    myIngredientList = (RecyclerView) ingredientView.findViewById(R.id.ingredientList);
    myIngredientList.setLayoutManager(new LinearLayoutManager(getContext()));

    mAuth = FirebaseAuth.getInstance();
    currentUserID = mAuth.getCurrentUser().getUid();

    fridgeRef = FirebaseDatabase.getInstance().getReference().child("vegetable").child(currentUserID);
    return ingredientView;
}

@Override
public void onStart() {
    super.onStart();

    FirebaseRecyclerOptions options =
            new FirebaseRecyclerOptions.Builder<ingredientAdapter>()
                    .setQuery(fridgeRef , ingredientAdapter.class)
                    .build();

    FirebaseRecyclerAdapter<ingredientAdapter, fridgeViewHolder> adapter
            = new FirebaseRecyclerAdapter<ingredientAdapter, fridgeViewHolder>(options) {
        @Override
        protected void onBindViewHolder(@NonNull fridgeViewHolder holder, int position, @NonNull ingredientAdapter model) {

            fridgeRef.addValueEventListener(new ValueEventListener() {
                @Override
                public void onDataChange(@NonNull DataSnapshot snapshot) {
                    String onionValue = snapshot.child("garlic").getValue().toString();
                    String garlicValue = snapshot.child("onion").getValue().toString();

                    if (onionValue.equals("1")){
                        holder.ingredName.setText("Onion");
                        String onionExpiryDate = snapshot.child("onionDateExpiry").getValue().toString();
                        holder.ingredExpiry.setText(onionExpiryDate);
                    }

                    if (garlicValue.equals("1")){
                        holder.ingredName.setText("Garlic");
                        String garlicExpiryDate = snapshot.child("garlicDateExpiry").getValue().toString();
                        holder.ingredExpiry.setText(garlicExpiryDate);
                    }
                }

                @Override
                public void onCancelled(@NonNull DatabaseError error) {

                }
            });
        }

        @NonNull
        @Override
        public fridgeViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {

            View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.ingredientrecycle, parent, false);
            fridgeViewHolder viewHolder = new fridgeViewHolder(view);
            return viewHolder;
        }
    };

    myIngredientList.setAdapter(adapter);
    adapter.startListening();
}

public static class fridgeViewHolder extends RecyclerView.ViewHolder{

    TextView ingredName, ingredExpiry;

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

        ingredName = itemView.findViewById(R.id.itemName);
        ingredExpiry = itemView.findViewById(R.id.itemExpiry);
    }
}

成分适配器.java

public class ingredientAdapter {

public int garlic, onion;
public String garlicDateExpiry, onionDateExpiry;

public  ingredientAdapter (){}

public ingredientAdapter(int garlic, int onion, String garlicDateExpiry, String onionDateExpiry) {
    this.garlic = garlic;
    this.onion = onion;
    this.garlicDateExpiry = garlicDateExpiry;
    this.onionDateExpiry = onionDateExpiry;
}

public int getGarlic() {
    return garlic;
}

public void setGarlic(int garlic) {
    this.garlic = garlic;
}

public int getOnion() {
    return onion;
}

public void setOnion(int onion) {
    this.onion = onion;
}

public String getGarlicDateExpiry() {
    return garlicDateExpiry;
}

public void setGarlicDateExpiry(String garlicDateExpiry) {
    this.garlicDateExpiry = garlicDateExpiry;
}

public String getOnionDateExpiry() {
    return onionDateExpiry;
}

public void setOnionDateExpiry(String onionDateExpiry) {
    this.onionDateExpiry = onionDateExpiry;
}

数据 - JSON

{
  "vegetable": {
    "hgO9joLhmfh4Wjn7xYpyqcYmNOB3": {
      "garlic": 1,
      "garlicDateExpiry": "2022-11-07",
      "onion": 1,
      "onionDateExpiry": "2022-11-07"
    }
  }
}