如何从以身份验证密钥存储数据的Firebase实时数据库中检索多个用户数据？

Question

我正在一个项目中，我需要从Firebase实时数据库中检索多个用户的数据，并且每个用户都是经过身份验证的用户，即每个用户数据都存储在经过身份验证的密钥下。我想将数据检索到recyclerview中。

这是个人资料页面的代码

public class Profile extends AppCompatActivity {

DatabaseReference databaseReference;
ProgressDialog progressDialog;
List<User> list = new ArrayList<User>();
RecyclerView recyclerView;
Firebase firebase;
FirebaseUser firebaseUser;
RecyclerView.Adapter adapter ;
FirebaseAuth mAuth;

@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_user_detail);

    mAuth = FirebaseAuth.getInstance();

    recyclerView = (RecyclerView) findViewById(R.id.recyclerView);

    recyclerView.setHasFixedSize(true);

    recyclerView.setLayoutManager(new LinearLayoutManager(Search_Profile.this));

    progressDialog = new ProgressDialog(Search_Profile.this);

    progressDialog.setMessage("Loading Data from Firebase Database");

    progressDialog.show();

    databaseReference = FirebaseDatabase.getInstance().getReference().child(Dashboard.Database_Path);

    databaseReference.addValueEventListener(new ValueEventListener() {
        @Override
        public void onDataChange(@NonNull DataSnapshot snapshot) {

            for (DataSnapshot dataSnapshot : snapshot.getChildren()) {

                User user = dataSnapshot.getValue(User.class);
                list.add(user);

            }
            adapter = new RecyclerViewAdapter(Search_Profile.this,list);

            recyclerView.setAdapter(adapter);

            progressDialog.dismiss();
        }

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

            progressDialog.dismiss();

        }
    });
}
}

这是适配器的代码

public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {


Context context;
private List<User> MainImageUploadInfoList;
RecyclerViewAdapter(Context context, List<User> TempList) {

    this.MainImageUploadInfoList = TempList;

    this.context = context;
}

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

    View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.recycler, parent, false);

    ViewHolder viewHolder = new ViewHolder(view);

    return viewHolder;
}


@Override
public void onBindViewHolder(ViewHolder holder, int position) {

    User user = MainImageUploadInfoList.get(position);

    holder.FirstNameTextView.setText(user.getFirst_name());

    holder.LastNameTextView.setText(user.getLast_name());

}

@Override
public int getItemCount() {

    return MainImageUploadInfoList.size();

}

public class ViewHolder extends RecyclerView.ViewHolder {

    public TextView FirstNameTextView;
    public TextView LastNameTextView;

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

        FirstNameTextView = (TextView) itemView.findViewById(R.id.textView1);
        LastNameTextView = (TextView) itemView.findViewById(R.id.textView2);


    }
}
}

这是用户代码

public class User {

private String first_name;
private String last_name;
private String date;
private String gender;
private String height;
private String city_state;
private String phone_no;
private String hobbies;
private String highest_education;
private String occupation;
private String income;
private String marital_status;
private String family_members;
private String fathers_name;
private String mothers_name;
private String fathers_occupation;
private String mothers_occupation;
private String siblings_names;
private String age;
private String height1;
private String marital_status1;
private String city_state1;
private String education1;
private String occupation1;
private String income1;
private String email_id;
private String user_id;


public User() {
}

public String getDate() {
    return date;
}

public void setDate(String date) {
    this.date = date;
}

public String getHeight() {
    return height;
}

public void setHeight(String height) {
    this.height = height;
}

public String getCity_state() {
    return city_state;
}

public void setCity_state(String city_state) {
    this.city_state = city_state;
}

public String getPhone_no() {
    return phone_no;
}

public void setPhone_no(String phone_no) {
    this.phone_no = phone_no;
}

public String getHobbies() {
    return hobbies;
}

public void setHobbies(String hobbies) {
    this.hobbies = hobbies;
}

public String getOccupation() {
    return occupation;
}

public void setOccupation(String occupation) {
    this.occupation = occupation;
}

public String getIncome() {
    return income;
}

public void setIncome(String income) {
    this.income = income;
}

public String getMarital_status() {
    return marital_status;
}

public void setMarital_status(String marital_status) {
    this.marital_status = marital_status;
}

public String getFamily_members() {
    return family_members;
}

public void setFamily_members(String family_members) {
    this.family_members = family_members;
}

public String getFathers_name() {
    return fathers_name;
}

public void setFathers_name(String fathers_name) {
    this.fathers_name = fathers_name;
}

public String getMothers_name() {
    return mothers_name;
}

public void setMothers_name(String mothers_name) {
    this.mothers_name = mothers_name;
}

public String getFathers_occupation() {
    return fathers_occupation;
}

public void setFathers_occupation(String fathers_occupation) {
    this.fathers_occupation = fathers_occupation;
}

public String getMothers_occupation() {
    return mothers_occupation;
}

public void setMothers_occupation(String mothers_occupation) {
    this.mothers_occupation = mothers_occupation;
}

public String getAge() {
    return age;
}

public void setAge(String age) {
    this.age = age;
}

public String getHeight1() {
    return height1;
}

public void setHeight1(String height1) {
    this.height1 = height1;
}

public String getMarital_status1() {
    return marital_status1;
}

public void setMarital_status1(String marital_status1) {
    this.marital_status1 = marital_status1;
}

public String getCity_state1() {
    return city_state1;
}

public void setCity_state1(String city_state1) {
    this.city_state1 = city_state1;
}

public String getEducation1() {
    return education1;
}

public void setEducation1(String education1) {
    this.education1 = education1;
}

public String getOccupation1() {
    return occupation1;
}

public void setOccupation1(String occupation1) {
    this.occupation1 = occupation1;
}

public String getIncome1() {
    return income1;
}

public void setIncome1(String income1) {
    this.income1 = income1;
}

public String getEmail_id() {
    return email_id;
}

public void setEmail_id(String email_id) {
    this.email_id = email_id;
}

public String getUser_id() {
    return user_id;
}

public void setUser_id(String user_id) {
    this.user_id = user_id;
}

public String getFirst_name() {
    return first_name;
}

public void setFirst_name(String first_name) {
    this.first_name = first_name;
}

public String getLast_name() {
    return last_name;
}

public void setLast_name(String last_name) {
    this.last_name = last_name;
}

public String getGender() {
    return gender;
}

public void setGender(String gender) {
    this.gender = gender;
}

public String getHighest_education() {
    return highest_education;
}

public void setHighest_education(String highest_education) {
    this.highest_education = highest_education;
}

public String getSiblings_names() {
    return siblings_names;
}

public void setSiblings_names(String siblings_names) {
    this.siblings_names = siblings_names;
}

}

This is the snippet for number of User which are autenticated and its and data is stored under autenticated key

These are the fields under the authenticated user

This is the link of last page for storing the data into firebase