Android 应用不会写入 Firebase 实时数据库

Question

我正在使用 Firebase 和 Android Studio 来构建应用。我有一个注册屏幕，要求用户输入用户名和位置等信息。单击注册按钮时，用户的电子邮件和密码会起作用，并显示在 Firebase 控制台的身份验证选项卡中。但是，我无法将用户名和位置等用户详细信息存储在 Firebase 实时数据库中。

package com.example.securityapp;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;

public class register extends AppCompatActivity {

    private FirebaseAuth mAuth;
    EditText emailReg, passwordReg, password2, roleReg, officeReg;
    Button regButton;
    DatabaseReference databaseUsers;
    EditText usernameReg;

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

        emailReg = (EditText) findViewById(R.id.regEmail);
        usernameReg = (EditText) findViewById(R.id.regUsername);
        passwordReg = (EditText) findViewById(R.id.regPassword);
        regButton = (Button) findViewById(R.id.register_Button);
        password2 = (EditText) findViewById(R.id.confirm_password);
        roleReg = (EditText) findViewById(R.id.regRole);
        officeReg = (EditText) findViewById(R.id.regOffice);
        databaseUsers = FirebaseDatabase.getInstance().getReference();
        mAuth = FirebaseAuth.getInstance();
    }

    public void registerUser() {
        final String email = emailReg.getText().toString();
        final String password = passwordReg.getText().toString();
        String pass2 = password2.getText().toString();
        if(!pass2.equals(password))
        {
            Toast.makeText(register.this, "Passwords Do Not Match",
                    Toast.LENGTH_SHORT).show();
                    return;
        }
        //Code taken from https://firebase.google.com/docs/auth/android/start on 10/11/2019
        mAuth.createUserWithEmailAndPassword(email, password)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful()) {
                            // Sign in success, update UI with the signed-in user's information

                            Intent intent_signup = new Intent(register.this, home.class);
                            startActivity(intent_signup);
                            finish();
                            FirebaseUser user = mAuth.getCurrentUser();
                            Toast.makeText(register.this, "Authentication Successful!",
                                    Toast.LENGTH_SHORT).show();
                        } else {
                            // If sign in fails, display a message to the user.
                            Toast.makeText(register.this, "Authentication failed.",
                                    Toast.LENGTH_SHORT).show();
                        }

                        // ...
                    }
                });

    }


    public void registerOnClick(View view)
    {
        regButton.setOnClickListener(new View.OnClickListener()
        {
            @Override
            public void onClick(View v)
            {

                registerUser();
                insertDataDB();

            }
        });


    }

    public void insertDataDB()
    {
         String username = usernameReg.getText().toString();
         String office = officeReg.getText().toString();
         String job = roleReg.getText().toString();
         String email = emailReg.getText().toString();


        String id = databaseUsers.push().getKey();

        Users user1 = new Users(username, office, job, email);
        databaseUsers.child(id).setValue(user1);


    }

}

Users.java

package com.example.securityapp;

public class Users {

     String username;
     String job;
     String email;
     String office;

     public Users()
    {

    }

    public Users(String username, String job, String email, String office)
    {
        this.username = username;
        this.job = job;
        this.email = email;
        this.office = office;
    }

    public String getUsername()
    {
        return username;
    }

    public String getJob() { return job; }

    public String getEmail()
    {
        return email;
    }

    public String getOffice()
    {
        return office;
    }



}

Answer 1

将安全规则更改为以下内容：

{
  // Allow read/write access to all users under any conditions
  // Warning: **NEVER** use this ruleset in production; it allows
  // anyone to overwrite your entire database.

  "rules": {
    ".read": true
    ".write": true
  }
}

Answer 2

这是我收到的通知，但我没有使用 Cloud Firestore，我正在尝试使用实时数据库

Answer 3

使用mAuth 完成帐户创建后，您应该将数据位置等存储在 Firebase 中。

//Code taken from https://firebase.google.com/docs/auth/android/start on 10/11/2019
mAuth.createUserWithEmailAndPassword(email, password)
    .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
    @Override
    public void onComplete(@NonNull Task<AuthResult> task) {
        if (task.isSuccessful()) {
            // Sign in success, update UI with the signed-in user's information

        // Here we will get the user information, ex userUid (optional)
        FirebaseUser user = mAuth.getCurrentUser();

        //After that store the data before intent to next activity
        insertDataDB();

        //Then proceed to next activity
        Intent intent_signup = new Intent(register.this, home.class);
        startActivity(intent_signup);
        finish();

        Toast.makeText(register.this, "Authentication Successful!", Toast.LENGTH_SHORT).show();
    } else {
        // If sign in fails, display a message to the user.
        Toast.makeText(register.this, "Authentication failed.", Toast.LENGTH_SHORT).show();
    }

    // ...
}
});

更新： 存储方法。

 public void insertDataDB()
 {
        String username = usernameReg.getText().toString();
        String office = officeReg.getText().toString();
        String job = roleReg.getText().toString();
        String email = emailReg.getText().toString();
        String id = databaseUsers.push().getKey();

        Users user1 = new Users(username, office, job, email);
        databaseUsers.child(id).setValue(user1).addOnCompleteListener(new OnCompleteListener<Void>() {
        @Override
        public void onComplete(@NonNull Task<Void> task) {
            if (task.isSuccessful()){
                //Success store data in database.
                Toast.makeText(getApplicationContext(),"Success",Toast.LENGTH_LONG).show();
            }else {
                //Something happened
                Toast.makeText(getApplicationContext(),"Error: " + task.getException().getMessage(),Toast.LENGTH_LONG).show();
            }
        }
    });
}