android studio recyclerView with firestore

[prabodhana]

මගේ firestore database එකේ collection එකක් තියනවා Orders කියලා

තව collection එකක් තියනවා Sellers කියලා ඒ Sellers එක ඇතුලෙ තව තියනව collection එකක් Fruits කියලා

මට ඕනේ මගෙ android application එකේ Activity එකේ තියන RecyclerView එකේ පෙන්නන්න Orders එකේ තියන furits_ID field එකට සමාන Sellers collection එකේ තියන Fruits collection එකේ Document ID එකට ගැලපෙන data සේරම ටික.
කවුරු හරි එකට විදිහක් දන්නවනම් පොඩ්ඩක් කියල දෙනවද?

Activity class:

package com.example.freshbucket.Seller;

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.helper.ItemTouchHelper;
import android.util.Log;
import android.widget.Toast;

import com.example.freshbucket.Adapter.OrdersSellerRecylerAdapter;
import com.example.freshbucket.Model.PlaceOrder;
import com.example.freshbucket.R;
import com.firebase.ui.firestore.FirestoreRecyclerOptions;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.firestore.CollectionReference;
import com.google.firebase.firestore.DocumentSnapshot;
import com.google.firebase.firestore.EventListener;
import com.google.firebase.firestore.FirebaseFirestore;
import com.google.firebase.firestore.FirebaseFirestoreException;
import com.google.firebase.firestore.Query;
import com.google.firebase.firestore.QuerySnapshot;

import javax.annotation.Nullable;

import static android.support.constraint.Constraints.TAG;

public class SellerGetOrdersActivity extends AppCompatActivity {

    String fid, pro;

   private FirebaseAuth mAuth = FirebaseAuth.getInstance();
    String user_id = mAuth.getCurrentUser().getUid();

    private FirebaseFirestore db = FirebaseFirestore.getInstance();
    private CollectionReference orders = db.collection("Orders");
    private CollectionReference sellers = db.collection("Sellers/"+user_id+"/Fruits");

    private OrdersSellerRecylerAdapter adapter;

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

        setupRecyclerView();

    }

    private void setupRecyclerView()
    {

        Query query =orders.orderBy("timestamp", Query.Direction.DESCENDING).whereEqualTo("fruit_ID",fid);

        FirestoreRecyclerOptions<PlaceOrder> options = new FirestoreRecyclerOptions.Builder<PlaceOrder>().setQuery(query, PlaceOrder.class).build();

        adapter = new OrdersSellerRecylerAdapter(options);

        RecyclerView recyclerView = findViewById(R.id.ordersReView);
        recyclerView.setHasFixedSize(true);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));



        recyclerView.setAdapter(adapter);

        //swipe delete
        new ItemTouchHelper(new ItemTouchHelper.SimpleCallback(0, ItemTouchHelper.LEFT| ItemTouchHelper.RIGHT) {
            @Override
            public boolean onMove(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, @NonNull RecyclerView.ViewHolder viewHolder1) {
                return false;
            }

            @Override
            public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int i) {
                adapter.deleteItem(viewHolder.getAdapterPosition());

            }
        }).attachToRecyclerView(recyclerView);

    }



    @Override
    protected void onStart() {
        super.onStart();
        adapter.startListening();



       sellers.addSnapshotListener(new EventListener<QuerySnapshot>() {
            @Override
            public void onEvent(@Nullable QuerySnapshot queryDocumentSnapshots, @Nullable FirebaseFirestoreException e) {



                if (e != null) {
                    Log.d(TAG, "Error:" + e.getMessage());
                } else {

                    for (DocumentSnapshot doc :queryDocumentSnapshots){

                        fid = doc.getId();

                       // pro = doc.getString("province");
                       // fid = doc.getString("fruit_ID");
                        Toast.makeText(SellerGetOrdersActivity.this, "Register error:" +fid , Toast.LENGTH_SHORT).show();


                               }



                }

            }
        });



    }

    @Override
    protected void onStop() {
        super.onStop();
        adapter.stopListening();
    }
  }

Adapter:

  package com.example.freshbucket.Adapter;

import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.TextView;

import com.example.freshbucket.Model.PlaceOrder;
import com.example.freshbucket.R;
import com.firebase.ui.firestore.FirestoreRecyclerAdapter;
import com.firebase.ui.firestore.FirestoreRecyclerOptions;

public class OrdersSellerRecylerAdapter extends FirestoreRecyclerAdapter<PlaceOrder, OrdersSellerRecylerAdapter.OrdersSellerHolder> {

    Context context;


    public OrdersSellerRecylerAdapter(@NonNull FirestoreRecyclerOptions<PlaceOrder> options) {
        super(options);
    }

    @Override
    protected void onBindViewHolder(@NonNull final OrdersSellerHolder holder, int position, @NonNull final PlaceOrder model) {

       holder.txtfruitname.setText(model.getName());
       holder.txtqun.setText(model.getQun());
       holder.txtcusname.setText(model.getCustomer_Name());
        holder.txtaddress1.setText(model.getAddressLine1());
        holder.txtaddress2.setText(model.getAddressLine2());
        holder.txtcity.setText(model.getCity());


    }

    @NonNull
    @Override
    public OrdersSellerHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {

        View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.order_list_item_seller,viewGroup, false);
        context = viewGroup.getContext();


        return new OrdersSellerHolder(v);
    }


    class OrdersSellerHolder extends RecyclerView.ViewHolder{

       TextView txtfruitname, txtqun, txtcusname, txtaddress1, txtaddress2, txtcity;
       EditText tctBprice;


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

            txtfruitname = itemView.findViewById(R.id.fruitnametext);
            txtqun = itemView.findViewById(R.id.fruitquntext);
            txtcusname = itemView.findViewById(R.id.cusnametext);
            txtaddress1 = itemView.findViewById(R.id.addres1text);
            txtaddress2 = itemView.findViewById(R.id.addres2text);
            txtcity = itemView.findViewById(R.id.citytext);


        }


    }

    public void deleteItem(int position) {
        getSnapshots().getSnapshot(position).getReference().delete();
    }




}

[root]

@fern help him.