我有一个将createUserWithEmailAndPassword数据保存到实时数据库和身份验证数据库的系统。但是，在使用google登录创建类似系统后，什么也不会保存到数据库，什么也不会保存到Authentication数据库。
我尝试使用Log.e，我尝试调试该应用程序，还尝试解码该代码...
这里是一些代码：
package com.brandshopping.brandshopping;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.nfc.Tag;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import com.google.android.gms.auth.api.Auth;
import com.google.android.gms.auth.api.signin.GoogleSignIn;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.android.gms.auth.api.signin.GoogleSignInClient;
import com.google.android.gms.auth.api.signin.GoogleSignInOptions;
import com.google.android.gms.auth.api.Auth;
import com.google.android.gms.common.api.ApiException;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import java.util.HashMap;
public class LoginOrSignupActivity extends AppCompatActivity {
private Button LoginBtn, RegisterWithEmailBtn, RegisterWithGoogleBtn;
private String Tag;
private ProgressDialog LoadingBar;
private FirebaseDatabase firebasedatabase = FirebaseDatabase.getInstance();
private DatabaseReference database = firebasedatabase.getReference();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login_or_signup);
LoadinGUI();
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestEmail()
.build();
GoogleSignInClient mGoogleSignInClient = GoogleSignIn.getClient(this, gso); //Create Google sign in object
LoginBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
startActivity(new Intent(LoginOrSignupActivity.this, LogInActivity.class));
}
});
RegisterWithEmailBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
startActivity(new Intent(LoginOrSignupActivity.this, RegisterActivity.class));
}
});
RegisterWithGoogleBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.Register_WithGoogle_btn:
signIn();
break;
}
}
});
}
private void signIn() {
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestEmail()
.build();
GoogleSignInClient mGoogleSignInClient = GoogleSignIn.getClient(LoginOrSignupActivity.this, gso); //Create Google sign in object
Intent signInIntent = mGoogleSignInClient.getSignInIntent();
int RC_SIGN_IN = 100;
startActivityForResult(signInIntent, RC_SIGN_IN);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
int RC_SIGN_IN = 100;
// Result returned from launching the Intent from GoogleSignInClient.getSignInIntent(...);
if (requestCode == RC_SIGN_IN) {
// The Task returned from this call is always completed, no need to attach
// a listener.
Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
handleSignInResult(task);
}
}
private void handleSignInResult(Task<GoogleSignInAccount> completedTask) {
try {
GoogleSignInAccount account = completedTask.getResult(ApiException.class);
Toast.makeText(this, "Register/signin successful", Toast.LENGTH_SHORT).show();
startActivity(new Intent(LoginOrSignupActivity.this, AccountInfoActivity.class));
} catch (ApiException e) {
// The ApiException status code indicates the detailed failure reason.
// Please refer to the GoogleSignInStatusCodes class reference for more information.
Toast.makeText(this, "Log in failed", Toast.LENGTH_SHORT).show();
Log.e(Tag, "error: ");
startActivity(new Intent(LoginOrSignupActivity.this, AccountInfoActivity.class));
}
}
void SaveToDataBase(){
database.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
GoogleSignInAccount Guser = GoogleSignIn.getLastSignedInAccount(LoginOrSignupActivity.this);
String EmailWithEtheraRemoved = Guser.getEmail().replace(".", " ");
if(!(dataSnapshot.child("Users").child(EmailWithEtheraRemoved).exists())){
LoadingBar.setMessage("Please wait while we load the credentialls in");
LoadingBar.setTitle("Register");
LoadingBar.setCanceledOnTouchOutside(false);
LoadingBar.show();
HashMap<String, Object> Userdatamap = new HashMap<>();
Userdatamap
.put("Email", Guser.getEmail());
Userdatamap
.put("Phone number", "Google intigrated sign in does not allow phone number requesting... This will be fixed in later patches");
Userdatamap
.put("Name", Guser.getGivenName() + Guser.getFamilyName());
if(Guser != null){
Userdatamap
.put("Created with", "Intigrated Google sign in");
}
database
.child("Users")
.child(EmailWithEtheraRemoved)
.updateChildren(Userdatamap)
.addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
LoadingBar.dismiss();
Toast.makeText(LoginOrSignupActivity.this, "Database save successful", Toast.LENGTH_SHORT).show();
Log.e("SignUpError :", task
.getException()
.getMessage());
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(LoginOrSignupActivity.this, "Registration failed", Toast.LENGTH_SHORT).show();
Log.e(Tag, "error: ");
}
});
}
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
}
void LoadinGUI(){
LoginBtn = (Button) findViewById(R. id. Login_btn);
RegisterWithEmailBtn = (Button) findViewById(R. id. Register_WithEmail_btn);
RegisterWithGoogleBtn = (Button) findViewById(R. id. Register_WithGoogle_btn);
}
}
我希望该应用程序将信息保存到实时数据库以及身份验证数据库中。其中的零点似乎正在起作用...
答案 0 :(得分：1)
成功登录后，您忘记了致电SaveToDataBase。这就是为什么没有日志和数据库条目的原因。
答案 1 :(得分：1)
从Google Signin收到结果后，您将不会调用Firebase登录。
在handleSignInResult中，您获得了Google登录的结果，您只需创建GoogleAuth凭据并将其用于signInwithCredentials。
AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
mAuth.signInWithCredential(credential)
.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
Log.d(TAG, "signInWithCredential:success");
FirebaseUser user = mAuth.getCurrentUser();
saveUpdateUserProfile(user);
} else {
// If sign in fails, display a message to the user.
Log.w(TAG, "signInWithCredential:failure", task.getException());
Snackbar.make(findViewById(R.id.main_layout), "Authentication Failed.", Snackbar.LENGTH_SHORT).show();
}
}
});
这将创建/登录Firebase用户，然后您可以检查数据库以查看用于登录的Google帐户是否是用于保存用户信息的新帐户。
P.S您还可以优化数据库查询。您当前的查询将从数据库获取所有用户。另外，您不应使用电子邮件地址作为数据库中的密钥。
使用Firebase用户ID作为键可以更有效地使用数据库结构：
users: {
firebaaseUID1: {},
firebaaseUID2: {},
.
.
}
您的SaveToDataBase现在可以是：
void SaveToDataBase（FirebaseUser用户，布尔值isGoogleSignIn）{
database.getReference().child("Users").child(user.getUid())
.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
if (dataSnapshot.exists()){
// firebase user data is present in db, do appropiate action or take user to home screen
}
else {
LoadingBar.setMessage("Please wait while we load the credentialls in");
LoadingBar.setTitle("Register");
LoadingBar.setCanceledOnTouchOutside(false);
LoadingBar.show();
HashMap<String, Object> Userdatamap = new HashMap<>();
Userdatamap.put("Email", user.getEmail());
// Userdatamap
// .put("phoneNumber", "Google intigrated sign in does not allow phone number requesting... This will be fixed in later patches");
Userdatamap.put("Name", user.getDisplayName());
if (isGoogleSignIn)
Userdatamap.put("Created with", "Intigrated Google sign in");
database
.child("Users")
.child(user.getUid())
.updateChildren(Userdatamap)
.addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
LoadingBar.dismiss();
Toast.makeText(LoginOrSignupActivity.this, "Database save successful", Toast.LENGTH_SHORT).show();
Log.e("SignUpError :", task
.getException()
.getMessage());
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(LoginOrSignupActivity.this, "Registration failed", Toast.LENGTH_SHORT).show();
Log.e(Tag, "error: ");
}
});
}
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {}
});
}
}
答案 2 :(得分：1)
我正在考虑您是否已经将Firebase添加到项目中，请点击此链接https://firebase.google.com/docs/auth/android/google-signin
然后，您必须在Firebase中启用Google登录，方法是从左侧面板中选择身份验证，然后选择登录提供者标签并启用Google登录。
您的项目级构建脚本应如下所示
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.4.1'
classpath 'com.google.gms:google-services:4.2.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
并且应用程序级别的build.gradle文件应该具有这些依赖项
//firebasecore
implementation 'com.google.firebase:firebase-core:17.0.0'
//firebase auth
implementation 'com.google.firebase:firebase-auth:18.0.0'
//google auth
implementation 'com.google.android.gms:play-services-auth:17.0.0'
并且登录名应具有以下代码
public class Login_Activity extends AppCompatActivity {
ImageView gLogin;
private static final int RC_SIGN_IN=1;
private FirebaseAuth mAuth;
GoogleSignInClient mGoogleSignInClient;
Firebase user;
@Override
protected void onStart() {
super.onStart();
user = mAuth.getCurrentUser();
if(user!=null)
{
startActivity(new Intent(Login_Activity.this,MainActivity.class));
Login_Activity.this.finish();
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login_);
gLogin=findViewById(R.id.gLogin);
// ...
// Initialize Firebase Auth
mAuth = FirebaseAuth.getInstance();
// Configure sign-in to request the user's ID, email address, and basic
// profile. ID and basic profile are included in DEFAULT_SIGN_IN.
GoogleSignInOptions gso = new
GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestIdToken(getString(R.string.default_web_client_id))
.requestEmail()
.build();
// Build a GoogleSignInClient with the options specified by gso.
mGoogleSignInClient= GoogleSignIn.getClient(this, gso);
gLogin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
signIn();
}
});
}
private void signIn() {
Intent signInIntent = mGoogleSignInClient.getSignInIntent();
startActivityForResult(signInIntent, RC_SIGN_IN);
Toast.makeText(this, "starting activity", Toast.LENGTH_SHORT).show();
}
@Override
public void onActivityResult(int requestCode, int resultCode,Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// Result returned from launching the Intent from
GoogleSignInClient.getSignInIntent(...);
if (requestCode == RC_SIGN_IN) {
// The Task returned from this call is always completed, no need to
//attach
// a listener.
Task<GoogleSignInAccount> task =
GoogleSignIn.getSignedInAccountFromIntent(data);
Toast.makeText(this, "inside on Activity result",
Toast.LENGTH_SHORT).show();
try {
Toast.makeText(this, "authenticating", Toast.LENGTH_SHORT).show();
// Google Sign In was successful, authenticate with Firebase
GoogleSignInAccount account = task.getResult(ApiException.class);
firebaseAuthWithGoogle(account);
} catch (ApiException e) {
// Google Sign In failed, update UI appropriately
Log.w("firebase exception", "Google sign in failed", e);
// ...
}
//handleSignInResult(task);
}
}
private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {
Log.d("authenticate", "firebaseAuthWithGoogle:" + acct.getId());
AuthCredential credential =
GoogleAuthProvider.getCredential(acct.getIdToken(), null);
mAuth.signInWithCredential(credential)
.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
Log.d("message","signInWithCredential:success");
user = mAuth.getCurrentUser();
Log.d("user id", user.getUid());
startActivity(new
Intent(Login_Activity.this,MainActivity.class));
Login_Activity.this.finish();
} else {
// If sign in fails, display a message to the user.
Log.w("message","signInWithCredential:failure", task.getException());
}
}
});
}
您需要使用带有Google登录名的requestId令牌进行登录，您可以使用此代码，它将使用google登录名登录到Firebase经过身份验证的用户数据库中。
对于数据库，您应该一次检查数据库规则的读写权限，并且该规则应该有效