Question

我试图按照常规方法从我的firebase实时数据库中获取一些数据，但无法弄清楚问题出在哪里。

以下Toast语句不返回任何内容，以某种方式populateViewHolder无法正常工作！

无法确定问题出在哪里。有人可以指出吗？

任何事情都将不胜感激！该代码附在下面-

package com.example.abed.smit;

import android.annotation.SuppressLint;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.RequiresApi;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.Toolbar;

import com.firebase.ui.database.FirebaseRecyclerAdapter;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.Query;

public class FindDocActivity extends AppCompatActivity {


private ImageView searchbtn;
private EditText searchInput;

private RecyclerView searchResulist;

private DatabaseReference allusersDatabaseref;

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

    searchResulist= findViewById(R.id.search_result_list1);
    searchResulist.setHasFixedSize(true);
    searchResulist.setLayoutManager(new LinearLayoutManager(this));

    searchbtn=(ImageView)findViewById(R.id.search_people_btn1);

    searchInput=(EditText)findViewById(R.id.Search_box_input1);

    allusersDatabaseref= FirebaseDatabase.getInstance().getReference().child("BMDC").child("01");

    searchbtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            String searchBoxInput = searchInput.getText().toString();
            SearchPropleAnddonnor(searchBoxInput);
        }
    });
}

private void SearchPropleAnddonnor(String searchBoxInput) {

    Toast.makeText(this,"Searching..",Toast.LENGTH_LONG).show();

    Query searchpeopleBloodquery=allusersDatabaseref.orderByChild("ID")
            .startAt(searchBoxInput).endAt(searchBoxInput+"\uf8ff");
   FirebaseRecyclerAdapter<FindDoctors,FindBloodViewHolder>firebaseRecyclerAdapter=
            new FirebaseRecyclerAdapter<FindDoctors, FindBloodViewHolder>
                    (
                            FindDoctors.class,
                            R.layout.all_userdoc_display_layout,
                            FindBloodViewHolder.class,
                            searchpeopleBloodquery
                    ) {
                @Override
                protected void populateViewHolder(FindBloodViewHolder viewHolder, FindDoctors model, int position) {
                    viewHolder.setName(model.getName());
                    viewHolder.setId(model.getId());
                }
            };

    searchResulist.setAdapter(firebaseRecyclerAdapter);

}

public static class FindBloodViewHolder extends RecyclerView.ViewHolder{

    View mView;

    public FindBloodViewHolder(View itemView ) {
        super(itemView);
        mView=itemView;
    }

    public void setName(String name){

        TextView myname=(TextView)mView.findViewById(R.id.all_user_profile_name1);
        myname.setText(name);

    }

    public void setId(String id){

        TextView mystatus=(TextView)mView.findViewById(R.id.all_user_profile_status1);
        mystatus.setText(id);

    }

}
}

我用吸气剂塞特...

package com.example.abed.smit;

public class FindDoctors {

    public String id , name;

    public FindDoctors(String id, String name) {
        this.id = id;
        this.name = name;
    }

    public FindDoctors() {
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

和数据库

DataBase Structure

Answer 1

private void SearchDoc(String searchBoxInput1) {
    Toast.makeText(this, "searching..", Toast.LENGTH_LONG).show();

    Query searchdoctorquery = allDocdatabaseref.orderByChild("name").startAt(searchBoxInput1).endAt(searchBoxInput1 + "\uf8ff");


    firebaseRecyclerAdapter
                = new FirebaseRecyclerAdapter<FindDoctors, FindDoctorsViewHolder>(
                FindDoctors.class,
                R.layout.all_userdoc_display_layout,
                FindDoctorsViewHolder.class,
                searchdoctorquery

        ) {
            @Override
            protected void populateViewHolder(FindDoctorsViewHolder viewHolder, FindDoctors model, int position) {
                /// Toast.makeText(getApplicationContext(),model.getName().toString(), Toast.LENGTH_LONG).show();

                viewHolder.setbmdc(model.getbmdc());
                viewHolder.setName(model.getName());
                }
        };
        SearchResult_doc.setAdapter(firebaseRecyclerAdapter);
        firebaseRecyclerAdapter.startListening();
    }

Firebase数据库查询错误

1 个答案: