Android_Google登录和Facebook登录并使用Firebase身份验证
一、接入摘要
- 时间：2021-04-15
- 版本：google 19.0.0，facebook 9.0.0，firebase 20.0.4
- 语言：java
- 内容：google登录和facebook登录，firebase验证
firebase 这玩意可还行，google旗下产品，集成 Google、Facebook、Twitter、Github、Microsoft、Yahoo 等账号授权登录统一验证和管理账号。
二、接入流程
- google play 后台创建应用，配置应用信息，拿到参数
google-services.json - facebook 后台创建应用，配置应用信息，拿到参数
app_id - firebase 后台创建应用，关联 google 和 facebook
- 客户端代码接入
注：所有创建的应用包名签名要和客户端都一致，不要搞错了
三、客户端接入
集成依赖库
project 项目的 build.gradle 加入下面代码
dependencies {
...
classpath 'com.google.gms:google-services:4.3.4'
...
}
module 的 build.gradle 加入下面代码
apply plugin: 'com.google.gms.google-services'
dependencies {
...
//firebase
implementation 'com.google.firebase:firebase-auth:20.0.4'
//google
implementation 'com.google.android.gms:play-services-auth:19.0.0'
//facebook
implementation 'com.facebook.android:facebook-login:9.0.0'
...
}
配置AndroidStudio项目
将 google-services.json 复制到以下路径：
- project/module/src/debug/
google-services.json - project/module/src/release/
google-services.json
- 打开您的
/module/src/main/res/values/strings.xml文件 - 添加如下代码：
<string name="facebook_app_id">{facebook AppId}string>
<string name="fb_login_protocol_scheme">fb{facebook AppId}string>
- 打开
/module/src/main/AndroidManifest.xml文件 - 在
application节点下添加如下代码：
<meta-data
android:name="com.facebook.sdk.ApplicationId"
android:value="@string/facebook_app_id" />
<activity
android:name="com.facebook.FacebookActivity"
android:configChanges="keyboard|keyboardHidden|screenLayout|screenSize|orientation"
android:label="@string/app_name" />
<activity
android:name="com.facebook.CustomTabActivity"
android:exported="true">
<intent-filter><action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="@string/fb_login_protocol_scheme" />
intent-filter>
activity>
代码接入
1、初始化 firebase
firebase集成是作为 google 和 facebook 登录的验证以及统一的账号管理，比单独使用 google 或facebook 账号验证和管理方便，开开发者需求
private FirebaseAuth mAuth;
/**
* 初始化 FirebaseAuth 实例
*/
private void initFirebase() {
mAuth = FirebaseAuth.getInstance();
}
2、google 登录
参考地址
firebase：https://firebase.google.com/docs/auth/android/google-signin?authuser=0
google官方：https://developers.google.com/identity/sign-in/android/sign-in?authuser=0
/**
* google 登录
*/
private void googleLogin() {
// 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.
GoogleSignInClient googleSignInClient = GoogleSignIn.getClient(this, gso);
//启动登录，在onActivityResult方法回调
Intent signInIntent = googleSignInClient.getSignInIntent();
startActivityForResult(signInIntent, 1001);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
//google登录
if (requestCode == 1001) {
Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
try {
// Google Sign In was successful, authenticate with Firebase
GoogleSignInAccount account = task.getResult(ApiException.class);
if (account != null) {
//firebase验证google登录
firebaseAuthWithGoogle(account.getIdToken());
}
} catch (ApiException e) {
// Google Sign In failed, update UI appropriately
}
}
}
3、验证 google 登录
如果开发者不用firebase，而是 google 官方的验证，可参考https://developers.google.com/identity/sign-in/android/backend-auth?authuser=0
/**
* firebase 验证 google 登录
*
* @param idToken google 授权成功 token
*/
private void firebaseAuthWithGoogle(String idToken) {
try {
AuthCredential credential = GoogleAuthProvider.getCredential(idToken, null);
mAuth.signInWithCredential(credential)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if (task.isSuccessful()) {
//验证成功，请求我们服务端保存用户信息
FirebaseUser user = mAuth.getCurrentUser();
uploadServer(user);
}
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
4、facebook 登录
参考地址
firebase：https://firebase.google.com/docs/auth/android/facebook-login?authuser=0
facebook 官方：https://developers.facebook.com/docs/facebook-login/android
private CallbackManager fbCallbackManager;
private void facebookLogin() {
fbCallbackManager = CallbackManager.Factory.create();
LoginManager.getInstance().logInWithReadPermissions(this, Arrays.asList("email", "public_profile"));
LoginManager.getInstance().registerCallback(fbCallbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
//facebook授权成功，去firebase验证
if (loginResult != null) {
AccessToken accessToken = loginResult.getAccessToken();
if (accessToken != null) {
String token = accessToken.getToken();
firebaseAuthWithFacebook(token);
}
}
}
@Override
public void onCancel() {
//取消授权
}
@Override
public void onError(FacebookException error) {
//授权失败
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
//fb登录
if (fbCallbackManager != null) {
fbCallbackManager.onActivityResult(requestCode, resultCode, data);
}
...
}
5、验证 facebook 登录
private void firebaseAuthWithFacebook(String token) {
AuthCredential credential = FacebookAuthProvider.getCredential(token);
mAuth.signInWithCredential(credential)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
// SGameLog.e(TAG, "google channel signInWithCredential:task");
if (task.isSuccessful()) {
// Sign in success, update UI with the signed-in user's information
FirebaseUser user = mAuth.getCurrentUser();
} else {
//验证失败另作处理
}
}
});
}
6、上传服务端
/**
* 上传用户信息到服务端
*
* @param user firebase用户信息
*/
private void uploadServer(FirebaseUser user) {
if (user != null) {
String uid = user.getUid();
String displayName = user.getDisplayName();
String email = user.getEmail();
//上传服务端
}
}
7、自动登录
如需要自动自动可接入，在授权登录成功后，本地会在一定期限内保存用户信息
登录前检查登录状态：
/**
* 检查登录状态
*/
private void checkFirebaseUserAuth() {
FirebaseUser currentUser = mAuth.getCurrentUser();
if (currentUser != null) {
String displayName = currentUser.getDisplayName();
String email = currentUser.getEmail();
String uid = currentUser.getUid();
// 如果过查到用户信息说明已经登录过而且没过期或者没有登出
// 直接上传服务端，登录成功
uploadServer(currentUser);
}
}
8、登出（注销）
如需主动登当前账号，调用如下代码：
FirebaseAuth.getInstance().signOut();
常见错误
-
google登录错误码12500
在 firebase 后台项目配置支持电子邮箱
https://console.firebase.google.com/ -
firebase 验证报错：
failure An internal error has occurred. [ CONFIGURATION_NOT_FOUND ]，这个问题要检查一下firebase是否跟google play和facebook项目关联