我正在尝试使用用户的名字在Firebase中存储自定义字段。我在firebase中使用实时数据库。当我单击注册时，它将电子邮件和密码存储到Firebase中，但不存储名字字段。我是Firebase的新手，我很确定自己在将应用程序连接到Firebase时安装了正确的依赖项。
我创建了一个 UserDetails.java 类来创建变量的构造函数，并使用以下方法将其存储到firebase：
已更新
package com.test.smartparkingsystem_cit;
public class UserDetails {
public String firstname, lastname, email, password, phonenumber, vehiclenumber;
public UserDetails(){
}
public UserDetails(String firstname, String lastname, String email, String password, String phonenumber, String vehiclenumber) {
this.firstname = firstname;
this.lastname = lastname;
this.email = email;
this.password = password;
this.phonenumber = phonenumber;
this.vehiclenumber = vehiclenumber;
}
}
我非常确定我已经初始化了firebase实例，并使用以下代码将数据存储在firebase中：
mAuth.createUserWithEmailAndPassword(email,password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if(task.isSuccessful()) {
// call the constructor UserDetails.java and store user details to firebase
UserDetails user = new UserDetails(
email,
firstname
);
FirebaseDatabase.getInstance().getReference("Users")
.child(FirebaseAuth.getInstance().getCurrentUser().getUid())
.setValue(user).addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
progressBar.setVisibility(View.GONE);
if(task.isSuccessful()) {
Toast.makeText(register.this, getString(R.string.registration_success), Toast.LENGTH_LONG).show();
}else {
Toast.makeText(register.this, "Could not store to database.", Toast.LENGTH_SHORT).show();
}
}
});
}
else {
// Send Error message to application
Toast.makeText(register.this, "Some error occur, please check.", Toast.LENGTH_SHORT).show();
}
}
});
但是只有电子邮件和密码存储在数据库中，没有包括名字。有人可以帮忙吗？
这是我的 Register.java 中的以下代码：
package com.test.sample;
import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Patterns;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
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.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
public class register extends AppCompatActivity {
private FirebaseAuth mAuth; // declare firebase authentication
private Button back_btn; // create button config to open activity_register
private Button register_btn; // create button config to register user
ProgressBar progressBar; // declare progress bar after user registers
// Declare variables for register
EditText reg_email, reg_password, reg_fname;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
// Write a message to the database
FirebaseDatabase database = FirebaseDatabase.getInstance();
DatabaseReference myRef = database.getReference("message");
myRef.setValue("Hello, World!");
//Initialize variables according to ID
reg_email = (EditText) findViewById(R.id.reg_email);
reg_password = (EditText) findViewById(R.id.reg_password);
reg_fname = (EditText) findViewById(R.id.reg_fname);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
// Initialize Firebase Instance
mAuth = FirebaseAuth.getInstance();
// Register Button
register_btn = (Button) findViewById(R.id.reg_confirmbtnreg); // register User
register_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
RegisterUser();
}
});
}
// Function Register User
private void RegisterUser() {
// Initialize variables and get text inputs
final String email = reg_email.getText().toString().trim();
final String password = reg_password.getText().toString().trim();
final String firstname = reg_fname.getText().toString().trim();
// ** Check Empty Fields Start **//
// check if email is empty
if(email.isEmpty()) {
reg_email.setError("Email is required.");
reg_email.requestFocus();
return;
}
// check if password is empty
if(password.isEmpty()) {
reg_password.setError("Password is required.");
reg_password.requestFocus();
return;
}
// check if first name is empty
if(firstname.isEmpty()) {
reg_fname.setError("First Name is required.");
reg_fname.requestFocus();
return;
}
// ** Check Empty Fields End **//
// check if email is valid
if(!Patterns.EMAIL_ADDRESS.matcher(email).matches())
{
reg_email.setError("Please enter a valid email.");
reg_email.requestFocus();
return;
}
// check if password is minimum
if(password.length()<5) {
reg_password.setError("Minimum length of password should be 5.");
reg_password.requestFocus();
return;
}
// check if first name is minimum characters
if(firstname.length()<1) {
reg_fname.setError("First name should be 3-10 characters.");
reg_fname.requestFocus();
return;
}
// set visible progressbar once user clicks register button
progressBar.setVisibility(View.VISIBLE);
// Function to store data to firebase
mAuth.createUserWithEmailAndPassword(email,password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if(task.isSuccessful()) {
// call the constructor UserDetails.java and store user details to firebase
UserDetails user = new UserDetails(
email,
firstname
);
FirebaseDatabase.getInstance().getReference("Users")
.child(FirebaseAuth.getInstance().getCurrentUser().getUid())
.setValue(user).addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
progressBar.setVisibility(View.GONE);
if(task.isSuccessful()) {
Toast.makeText(register.this, getString(R.string.registration_success), Toast.LENGTH_LONG).show();
}else {
Toast.makeText(register.this, "Could not store to database.", Toast.LENGTH_SHORT).show();
}
}
});
}
else {
// Send Error message to application
Toast.makeText(register.this, "Some error occur, please check.", Toast.LENGTH_SHORT).show();
}
}
});
}
}
在我的 build.grade 中，位于应用程序下。我已经安装了这些依赖项以连接Firebase和实时数据库。还有这个问题吗？请帮忙。谢谢
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
implementation 'com.android.support:design:28.0.0'
implementation 'com.google.firebase:firebase-core:16.0.1'
implementation 'com.google.firebase:firebase-auth:16.0.1'
implementation 'com.google.firebase:firebase-database:16.0.1'
}
答案 0 :(得分：0)
要解决此问题，请更改以下代码行：
UserDetails user = new UserDetails(
email,
firstname
);
到
UserDetail suser = new UserDetails(
firstname,
lastname,
email,
password,
phonenumber,
vehiclenumber
);
通过这种方式，您正在通过将所有值传递给构造函数来构造UserDetails类的对象。在代码中，您只将两个值传递给不存在的两个参数的构造函数。