用户注册期间如何在Firebase的实时数据库中存储数据? [英] How to store data in realtime database in firebase during user registration?

问题描述

我正在制作具有用户个人资料的类似socialmedia的应用程序.我想在使用他们的uid注册时保存他们的个人资料数据.尽管注册成功，但配置文件未保存在Firebase数据库中.我还检查了规则，并为经过身份验证的用户设置了读写权限.

I'm making socialmedia-like app that has user profile. I want to save their profile data upon their registration using their uid. Although the registration is successful, profile is not saving in the firebase database. I've also checked the rules, and read and write is set for authenticated users.

这是我的代码:

public class RegisterActivity extends AppCompatActivity implements View.OnClickListener {

private Button btn_reg;
private EditText etName, etEmail, etPassword, etCPassword, etMobile, etSchoolCompany, etLocation;
private ProgressDialog progressDialog;
private FirebaseAuth firebaseAuth;


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

    Firebase.setAndroidContext(this);

    firebaseAuth = FirebaseAuth.getInstance();

    progressDialog = new ProgressDialog(this);

    btn_reg = (Button)findViewById(R.id.btnRegister);
    etName = (EditText)findViewById(R.id.etName);
    etEmail = (EditText)findViewById(R.id.etEmail);
    etPassword = (EditText)findViewById(R.id.etPassword);
    etCPassword = (EditText)findViewById(R.id.etCPassword);
    etMobile = (EditText)findViewById(R.id.etMobile);
    etSchoolCompany = (EditText)findViewById(R.id.etSchoolCompany);
    etLocation = (EditText)findViewById(R.id.etLocation);

    btn_reg.setOnClickListener(this);
}

@Override
public void onClick (View view){
    if(view == btn_reg){
        registerUser();
    }
}

private void registerUser(){
    String name = etName.getText().toString();
    String mobile = etMobile.getText().toString();
    String SchoolCompany = etSchoolCompany.getText().toString();
    String location = etLocation.getText().toString();
    final String email = etEmail.getText().toString().trim();
    final String password = etPassword.getText().toString().trim();
    String cpassword = etCPassword.getText().toString().trim();

    progressDialog.setMessage("Registering..");
    progressDialog.show();

    //REGISTERING USER
    firebaseAuth.createUserWithEmailAndPassword(email, password)
            .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                @Override
                public void onComplete(@NonNull Task<AuthResult> task) {
                    if(task.isSuccessful()){

                        //THIS IS FOR STORING AUTHENTICATED USER'S DATA
                        final Firebase ref = new Firebase("https://myfirebase.firebaseio.com");
                        ref.authWithPassword(email, password, new Firebase.AuthResultHandler(){
                            @Override
                            public void onAuthenticated(AuthData authData){
                                // Authentication just completed successfully :)
                                Map<String, String> map = new HashMap<String, String>();
                                map.put("provider", authData.getProvider());
                                if(authData.getProviderData().containsKey("displayName")) {
                                    map.put("displayName", authData.getProviderData().get("displayName").toString());
                                }
                                ref.child("users").child(authData.getUid()).setValue(map);
                            }
                            @Override
                            public void onAuthenticationError(FirebaseError error) {
                //ERRORS TODO
                            }
                        });
                        progressDialog.hide();
                        Toast.makeText(RegisterActivity.this, "Registered Successfully", Toast.LENGTH_SHORT).show();
                    }else{
                        Toast.makeText(RegisterActivity.this, "Registration failed, please try again", Toast.LENGTH_SHORT).show();
                    }
                }

            });
}


}

推荐答案

来自

尝试使用给定的电子邮件地址和密码创建一个新的用户帐户. 如果成功，它还会使用户登录到该应用.

这意味着您无需在注册过程完成后再次对用户进行身份验证.

That means you don't need to authenticate the user again after the signup process completed.

为确保任务已完成且firebaseUser不为空，最好将AuthStateListener添加到FirebaseAuth中，而不是将数据保存在onComplete方法中，代码位于

To make sure that the task is complete and the firebaseUser is not null, better add AuthStateListener to your FirebaseAuth instead of saving data inside onComplete method, the code is in the official guide

然后，如果用户经过身份验证，则可以保存数据.

Then you can save the data if the user is authenticated.

public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
    FirebaseUser user = firebaseAuth.getCurrentUser();
    if (user != null) {
        DatabaseReference ref = FirebaseDatabase.getInstance().getReference();
        Map<String, String> map = new HashMap<>();
        map.put("provider", user.getProviders().get(0));
        if(user.getProviderData().containsKey("displayName")) {
            map.put("displayName", user.getProviderData().get("displayName").toString());
        }
        ref.child("users").child(user.getUid()).setValue(map);
    } 
}

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