Question

我有一个项目，要查询Firebase实时数据库中的两个数据。事情是，我只想在查询中得到一个结果。例如SQL

SELECT * JOBS WHERE PHONE EQUAL TO PHONE

我已经明白了。我想要的就是结合查询电话和查询日期的位置。我正在尝试此操作，但是应用程序崩溃了。对不起，我的英语不好。我希望你们能理解我的意思。

public class CheckOrder extends AppCompatActivity {

private static final String TAG = "Image";
public RecyclerView recyclerView;
public RecyclerView.LayoutManager layoutManager;

FirebaseRecyclerAdapter<BothJobs, JobViewHolder> adapter;
FirebaseRecyclerAdapter<BothJobs, JobViewHolder> checkadapter;

private FirebaseDatabase database;
private DatabaseReference jobs;


MaterialSpinner spinner;

String phone;
String flightDate;

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


    database = FirebaseDatabase.getInstance();
    jobs = database.getReference("Jobs");


    recyclerView = findViewById(R.id.listCheckOrders);
    recyclerView.setHasFixedSize(true);
    layoutManager = new LinearLayoutManager(this);
    recyclerView.setLayoutManager(layoutManager);

    phone = Common.currentUser.getPhone();
    flightDate = Common.currentUser.getFlightDate();

    if (flightDate != null)
        loadOrders();


}

private void loadOrders() {

    final Query jobsProject = jobs.orderByChild("phone").equalTo(phone);

    jobsProject.addValueEventListener(new ValueEventListener() {
        @Override
        public void onDataChange(@NonNull DataSnapshot dataSnapshot) {

            for (DataSnapshot movieSnapshot : dataSnapshot.getChildren()) {
                BothJobs jobsCarrier = dataSnapshot.getValue(BothJobs.class);

                if (jobsCarrier.getTimestamp().equals(flightDate)) {

                    adapter = new FirebaseRecyclerAdapter<BothJobs, JobViewHolder>(
                            BothJobs.class,
                            R.layout.check_order_layout,
                            JobViewHolder.class,
                            jobsProject
                    ) {
                        @Override
                        protected void populateViewHolder(JobViewHolder viewHolder, final BothJobs model, int position) {

                            viewHolder.tvId.setText("ID : " + adapter.getRef(position).getKey());
                            viewHolder.tvName.setText("Carrier Name : " + model.getName());
                            viewHolder.tvStatus.setText("Status : " + Common.convertCodeToStatus(model.getStatus()));
                            viewHolder.tvAirport.setText("Airport : " + model.getAirport());
                            viewHolder.tvAirlines.setText("Airlines : " + model.getAirlines());
                            viewHolder.tvLuggage.setText("Free Space Luggage : " + model.getSpace());
                            viewHolder.tvLocation.setText("Location Want To Go : " + model.getLocation());
                            viewHolder.tvPhone.setText("Carrier Contact : " + model.getPhone());


                            RequestOptions placeholderRequest = new RequestOptions();
                            placeholderRequest.placeholder(R.drawable.profile);
                            Glide.with(getBaseContext()).setDefaultRequestOptions(placeholderRequest).load(model.getImage()).into(viewHolder.imageCarrier);

                            RequestOptions placeholderRequest2 = new RequestOptions();
                            placeholderRequest2.placeholder(R.drawable.wedee);
                            Glide.with(getBaseContext()).setDefaultRequestOptions(placeholderRequest2).load(model.getFlightDetail()).into(viewHolder.flightDetail);

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

                                    //Intent to ChooseJob

                                    Toast.makeText(CheckOrder.this, "Job" + model.getId(), Toast.LENGTH_SHORT).show();

                                }
                            });


                        }
                    };
                    adapter.notifyDataSetChanged();
                    recyclerView.setAdapter(adapter);




                }
            }


        }

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

        }
    });






}


}

我正在尝试将时间戳等于航班日期与phone等于phone匹配。但是什么也没出现，我暂时没有崩溃。 this image from "Jobs" ref this image from "User" ref

使用查询在数据库中查询两个数据

0 个答案: