将FirestoreRecyclerAdapter与两个查询一起使用

Question

我的Android应用程序中有两个查询。我将它们组合在一个任务中，这给了我所需的组合结果（正确的数据正在logcat中记录）。我正在使用FireStoreRecylerAdapter，但是在使用FirestoreRecyclerOptions时没有选择来合并两个查询。我只想在单击按钮时立即显示数据。

这是我的代码：

package com.example.XX;

import android.os.Bundle;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.navigation.NavController;
import androidx.navigation.Navigation;
import androidx.recyclerview.widget.RecyclerView;

import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;

import com.firebase.ui.firestore.FirestoreRecyclerOptions;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import com.google.android.gms.tasks.Tasks;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.firestore.DocumentReference;
import com.google.firebase.firestore.DocumentSnapshot;
import com.google.firebase.firestore.FirebaseFirestore;
import com.google.firebase.firestore.Query;
import com.google.firebase.firestore.QueryDocumentSnapshot;
import com.google.firebase.firestore.QuerySnapshot;

import java.util.List;


public class MainQueryFragment extends Fragment {

    RecyclerView recyclerView;
    ProfileRecyclerAdapter ProfileRecyclerAdapter;
    TextView yourSector;
    TextView yourPincode;
    FirebaseFirestore db = FirebaseFirestore.getInstance();
    String t_userID = FirebaseAuth.getInstance().getCurrentUser().getUid();
    String customerPincode;
    String customerSector;
    String sectorText;
    String pincodeText;
    String[] testArray;
    String name;
    String pincode;
    String address;
    String mobileNumber;
    String sector;
    String avgDeliveryTime;
    String avgDeliveryTimeUrg;
    Boolean item1;
    Boolean item2;
    Boolean item3;
    Boolean item4;
    Boolean item5;
    Boolean item6;
    Boolean item7;
    Boolean item8;
    Boolean item9;
    Boolean item10;



    public MainQueryFragment() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view = inflater.inflate(R.layout.fragment_main_query, container, false);
        recyclerView = view.findViewById(R.id.recylerView_tProfile);
        Query firstQuery = FirebaseFirestore.getInstance().collection("tUsers");
        Query secondQuery = FirebaseFirestore.getInstance().collection("tUsers");

        FirestoreRecyclerOptions<Profile> options = new FirestoreRecyclerOptions.Builder<Profile>()
//                .setQuery(firstQuery,Profile.class)
                .setQuery(secondQuery, Profile.class)
                .build();

       ProfileRecyclerAdapter = new ProfileRecyclerAdapter(options);
        recyclerView.setAdapter(ProfileRecyclerAdapter);


        return view;
    }

    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);

        yourSector = view.findViewById(R.id.Sector_tv);
        yourPincode = view.findViewById(R.id.Pincode_tv);

        DocumentReference docRef = db.collection("customerUsers").document(t_userID);
        docRef.get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
            @Override
            public void onComplete(@NonNull Task<DocumentSnapshot> task) {
                if (task.isSuccessful()) {
                    DocumentSnapshot document = task.getResult();
                    if (document.exists()) {
                        customerPincode = document.getString("pincode");//TODO ADD NOTHING HERE
                        customerSector = document.getString("sector");
                        sectorText = "Sector : " + customerSector;
                        pincodeText = "Pincode : " + customerPincode;
                        yourSector.setText(sectorText);
                        yourPincode.setText(pincodeText);


                    } else {
                        Log.d("docref", "No such document");
                    }
                } else {
                    Log.d("docref", "get failed with ", task.getException());
                }
            }
        });


        Button button = view.findViewById(R.id.startQuery_button);
        if (getArguments() != null) {
            MainQueryFragmentArgs args = MainQueryFragmentArgs.fromBundle(getArguments());
            testArray = args.getArrayCheckboxData();

        }


        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {


                //  TODO PROPER QUERY STARTS HERE
                Query firstQuery = FirebaseFirestore.getInstance().collection("tUsers");
                Query secondQuery = FirebaseFirestore.getInstance().collection("tUsers");
                // Add a condition for every value in our array
                for (int i = 0; i < testArray.length; i++) {
                    String field = testArray[i];
                    firstQuery = firstQuery.whereEqualTo(field, true);
                }

                secondQuery = secondQuery.whereEqualTo("pincode", customerPincode).whereEqualTo("sector", customerSector);

                Task firstTask = firstQuery.get();
                Task secondTask = secondQuery.get();


                Task<List<QuerySnapshot>> combinedTask = Tasks.whenAllSuccess(firstTask, secondTask);
                combinedTask.addOnSuccessListener(new OnSuccessListener<List<QuerySnapshot>>() {
                    @Override
                    public void onSuccess(List<QuerySnapshot> querySnapshots) {

                        for (QuerySnapshot queryDocumentSnapshots : querySnapshots) {
                            for (QueryDocumentSnapshot documentSnapshot : queryDocumentSnapshots) {
                                Profile Profile = documentSnapshot.toObject(Profile.class);

                                name = Profile.getName();
                                pincode = Profile.getPincode();
                                address = Profile.getAddress();
                                mobileNumber =Profile.getMobileNumber();
                                sector = Profile.getSector();
                                avgDeliveryTime = Profile.getAvgDeliveryTime();
                                avgDeliveryTimeUrg = Profile.getAvgDeliveryTimeUrg();
                                item1 = Profile.getItem1();
                                item2 = Profile.getItem2();
                                item3 = Profile.getItem3();
                                item4 = Profile.getItem4();
                                item5 = Profile.getItem5();
                                item6 = Profile.getItem6();
                                item7 = Profile.getItem7();
                                item8 = Profile.getItem8();
                                item9 = Profile.getItem9();
                                item10 =Profile.getItem10();
                                Log.d("test", "onSuccess: " + name);

                            }
                        }
                    }
                });

                FirestoreRecyclerOptions<Profile> options = new FirestoreRecyclerOptions.Builder<Profile>()
                        .setQuery(secondQuery,Profile.class).build();

                ProfileRecyclerAdapter = new ProfileRecyclerAdapter(options);
                recyclerView.setAdapter(ProfileRecyclerAdapter);


                           }
        });
    }


}

当我仅在其中添加一个查询时，recyllerview中也没有任何内容 FirestoreRecylerOptions。

修改： 有什么方法可以将secondQuery添加到firstQuery即在for循环内进行单个查询吗？另外，是否必须在MainActivity内部初始化Recylerview？我正在使用Navigation组件，其中MainActivity是我的导航主机片段