Android 应用程序集成Google 登录及二次封装

最新更新（2020/4/15）

最新有个项目要集成 google 登陆，我又又又又重新做了一遍，发现很多重要 api 都变了，这里重新总结一下，用 Kotlin 编写。

首先依赖包已经更新到 18.0.0

 api 'com.google.android.gms:play-services-auth:18.0.0'

GoogleLoginUtil 工具类：

package com.enjoy.literaturemodule.account.login.google

import android.content.Context

import androidx.fragment.app.FragmentActivity

import com.enjoy.library.utils.LogUtils

import com.enjoy.literaturemodule.R

import com.google.android.gms.auth.api.signin.*

import com.google.android.gms.common.api.ApiException

import com.google.android.gms.tasks.Task

/**

 * @author yanjun.zhao

 * @time 2020/4/15 3:20 PM

 * @desc Google 登陆

 */

class GoogleLoginUtil(var activity: FragmentActivity, private var googleSignListener: GoogleSignListener) {

    private var gso: GoogleSignInOptions? = null

    private var mGoogleSignClient: GoogleSignInClient? = null

    companion object {

        const val requestCode = 10

    }

    init {

        gso = GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)

                .requestEmail()

                .requestId()

                .requestIdToken(activity.getString(R.string.google_server_client_id))

                .requestProfile()

                .build()

        mGoogleSignClient = GoogleSignIn.getClient(activity, gso!!)

    }

    /**

     * 登陆

     */

    fun login() {

        var intent = mGoogleSignClient?.signInIntent

        activity.startActivityForResult(intent, requestCode)

    }

    /**

     * 退出登陆

     */

    fun signOut() {

        mGoogleSignClient?.signOut()

                ?.addOnCompleteListener {

                    googleSignListener?.googleLogoutSuccess()

                }

                ?.addOnFailureListener {

                    googleSignListener?.googleLogoutFail()

                }

    }

    /**

     * 是否 登陆过

     */

    fun hasLogin(context: Context): Boolean {

        var accout = GoogleSignIn.getLastSignedInAccount(context)

        if (accout == null) {

            //是新用户，没有登陆过

            return false

        } else {

            //老用户，已经登陆过

            //获取用户信息

            var displayName = accout?.displayName

            var email = accout?.email

            val id = accout?.id

            val photoUrl = accout?.photoUrl

            val familyName = accout?.familyName

            val givenName = accout?.givenName

            return true

        }

    }

    fun handleSignInResult(completedTask: Task<GoogleSignInAccount>) {

        try {

            var accout = completedTask.getResult(ApiException::class.java)

            //登陆成功

            var displayName = accout?.displayName

            var email = accout?.email

            val id = accout?.id

            val photoUrl = accout?.photoUrl

            val familyName = accout?.familyName

            val givenName = accout?.givenName

            LogUtils.d("google-displayName", displayName)

            LogUtils.d("google-email", email)

            LogUtils.d("google-photoUrl", photoUrl?.encodedPath)

            LogUtils.d("google-photoUrl", photoUrl?.toString())

            LogUtils.d("google-familyName", familyName)

            LogUtils.d("google-givenName", givenName)

            LogUtils.d("google-id", id)

            googleSignListener?.googleLoginSuccess()

        } catch (e: ApiException) {

            googleSignListener?.googleLoginFail()

        }

    }

    interface GoogleSignListener {

        fun googleLoginSuccess()

        fun googleLoginFail()

        fun googleLogoutSuccess()

        fun googleLogoutFail()

    }

}

Activity 使用

package com.enjoy.literaturemodule.account

import android.content.Intent

import android.os.Bundle

import android.util.Log

import androidx.fragment.app.FragmentActivity

import com.enjoy.literaturemodule.account.login.google.GoogleLoginUtil

import com.google.android.gms.auth.api.signin.GoogleSignIn

import kotlinx.android.synthetic.main.activity_login.*

/**

 * 登陆

 */

class LoginActivity : FragmentActivity(), GoogleLoginUtil.GoogleSignListener {

    private var googleLoginUtil: GoogleLoginUtil? = null

    override fun onCreate(savedInstanceState: Bundle?) {

        super.onCreate(savedInstanceState)

        googleLoginUtil = GoogleLoginUtil(this, this)

        //登陆

        google_signIn_bt.setOnClickListener {

            googleLoginUtil?.login()

        }

    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {

        //google登陆

        if (requestCode == GoogleLoginUtil.requestCode) {

            var googleResultTask = GoogleSignIn.getSignedInAccountFromIntent(data)

            googleLoginUtil?.handleSignInResult(googleResultTask)

        }

        super.onActivityResult(requestCode, resultCode, data)

    }

    override fun googleLoginSuccess() {

        Log.e("google", "googleLoginSuccess")

    }

    override fun googleLoginFail() {

        Log.e("google", "googleLoginFail")

    }

    override fun googleLogoutSuccess() {

        Log.e("google", "googleLogoutSuccess")

    }

    override fun googleLogoutFail() {

        Log.e("google", "googleLogoutFail")

    }

}

在做的时候，发现一直登陆不成功 StatusCode = 12500 , 折腾了很久，才弄好，有两点需要注意：

注意事项1：

一旦添加了 google_server_client_id ，那么客户端 google-services.json 一定要更新。

注意事项2：

项目集成 Google 登陆，一定要在 Firebase 后台开启 Google 登陆功能，一定、一定、一定。

开启之前的状态

开启之后的状态：

补充：（2016/8/9）

有很多人留言或者发私信说一直登陆失败。然后我就自己写了一个demo，核心代码完全复制博客里面的 GoogleLogin (代码见第六个标题， 6、Google SDK 二次封装) 里面的代码，真的是一行代码都没有改,完完全全复制的。最后实现登陆成功，可见博客里面的代码是没有问题的。我在操作过程中，有几个关键的地方提一下。

1、权限问题：只需要添加联网权限即可

<uses-permission android:name="android.permission.INTERNET"></uses-permission>

2、签名问题

在开发者后台创建app的时候，需要添加 SHA-1的值，这个值是从你的签名里面获取的。注意，在你运行demo的时候，如果直接运行是不行的，因为直接运行，android studio 会为你的app使用默认签名，这个签名是系统自带的，这个签名的SHA-1值肯定和你真正的签名文件SHA-1值不一样，所以必然会登录失败。你需要修改你的app debug 时的签名和发布时的签名一致就好了。

正文：

谷歌登录API： https://developers.google.com/identity/sign-in/android/

1、注册并且登录google网站

https://accounts.google.com/

2、进入google开发者平台创建应用

https://developers.google.com/mobile/add?platform=android&cntapi=signin&cntapp=Default%20Demo%20App&cntpkg=com.google.samples.quickstart.signin&cnturl=https:%2F%2Fdevelopers.google.com%2Fidentity%2Fsign-in%2Fandroid%2Fstart%3Fconfigured%3Dtrue&cntlbl=Continue%20with%20Try%20Sign-In

3、在开发者平台填写响应的信息，包括应用名、包名、签名的SHA-1值

图1

图2

图3

4、在项目中添加谷歌服务

4.1、在SDK Manager 里面下载 google service

4.2、在project目录下的build.gradle下添加

classpath 'com.google.gms:google-services:2.1.0-alpha4'

4.3 在model目录下的build.gradle下添加

compile 'com.google.android.gms:play-services-auth:8.4.0'

5、代码实现

5.1、在布局文件中

  <com.google.android.gms.common.SignInButton

             android:id="@+id/google_signIn_bt"

             android:layout_width="wrap_content"

             android:layout_height="wrap_content" />

         <Button

             android:id="@+id/google_loginOut_bt"

             android:layout_width="match_parent"

             android:layout_height="wrap_content"

             android:text="google退出登录"

             android:layout_gravity="center"

             android:gravity="center"

             >

         </Button>

5.2、java代码

 package com.pegasus.map.presentation.ui.activity;

 import android.content.Intent;

 import android.os.Bundle;

 import android.view.View;

 import android.widget.Button;

 import com.google.android.gms.auth.api.Auth;

 import com.google.android.gms.auth.api.signin.GoogleSignInAccount;

 import com.google.android.gms.auth.api.signin.GoogleSignInOptions;

 import com.google.android.gms.auth.api.signin.GoogleSignInResult;

 import com.google.android.gms.common.ConnectionResult;

 import com.google.android.gms.common.SignInButton;

 import com.google.android.gms.common.api.GoogleApiClient;

 import com.google.android.gms.common.api.ResultCallback;

 import com.google.android.gms.common.api.Status;

 import com.pegasus.map.R;

 import com.pegasus.map.presentation.ui.base.BaseActivity;

 import butterknife.Bind;

 import butterknife.ButterKnife;

 /**

  * Created by ${zyj} on 2016/3/24.

  * 登录

  */

 public class LoginActivity1 extends BaseActivity implements GoogleApiClient.OnConnectionFailedListener , View.OnClickListener  {

     public int RequestCode = 10 ;

     @Bind( R.id.google_signIn_bt )

     public SignInButton google_signIn_bt ;

     @Bind( R.id.google_loginOut_bt )

     public Button google_loginOut_bt ;

     public GoogleSignInOptions gso ;

     public GoogleApiClient mGoogleApiClient ;

     @Override

     protected void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.activity_login);

         ButterKnife.bind(this);

         init();

     }

     private void init() {

         //初始化谷歌登录服务

         gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)

                 .requestEmail()   //获取邮箱

                 .requestId()      //获取id 号

                 .requestIdToken("456212545785")  //获取token

                 .build();

         // Build a GoogleApiClient with access to GoogleSignIn.API and the options above.

         mGoogleApiClient = new GoogleApiClient.Builder( this )

                 .enableAutoManage( this , this )

                 .addApi(Auth.GOOGLE_SIGN_IN_API, gso)

                 .build();

         //登录

         google_signIn_bt.setSize(SignInButton.SIZE_STANDARD);

         google_signIn_bt.setScopes(gso.getScopeArray());

         google_signIn_bt.setOnClickListener(this) ;

         //退出

         google_loginOut_bt.setOnClickListener(this) ;

     }

     @Override

     protected void onActivityResult(int requestCode, int resultCode, Intent data) {

         super.onActivityResult(requestCode, resultCode, data);

         //谷歌登录成功回调

         if ( requestCode == RequestCode ) {

             GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);

             handleSignInResult( result ) ;

         }

     }

     @Override

     public void onConnectionFailed(ConnectionResult connectionResult) {

     }

     @Override

     public void onClick(View v) {

         switch ( v.getId() ){

             case R.id.google_signIn_bt :   //登录

                 signIn();

                 break;

             case R.id.google_loginOut_bt :

                 signOut();

                 break;

         }

     }

     /**

      * 登录

      */

     private void signIn() {

         Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);

         startActivityForResult(signInIntent, RequestCode );

     }

     /**

      * 退出

      */

     private void signOut() {

         Auth.GoogleSignInApi.signOut(mGoogleApiClient).setResultCallback(

                 new ResultCallback<Status>() {

                     @Override

                     public void onResult(Status status) {

                         // ...

                     }

                 });

     }

     private void handleSignInResult(GoogleSignInResult result) {

         if (result.isSuccess()) {

             // Signed in successfully, show authenticated UI.

             GoogleSignInAccount acct = result.getSignInAccount();

             //获取用户名

             String name = acct.getDisplayName() ;

             String email = acct.getEmail() ;

             String token = acct.getIdToken() ;

             String id = acct.getId() ;

         } else {

             // Signed out, show unauthenticated UI.

         }

     }

 }

6、Google SDK 二次封装

 package com.pegasus.map.presentation.utils;

 import android.content.Intent;

 import android.support.v4.app.FragmentActivity;

 import android.util.Log;

 import android.widget.Toast;

 import com.google.android.gms.auth.api.Auth;

 import com.google.android.gms.auth.api.signin.GoogleSignInAccount;

 import com.google.android.gms.auth.api.signin.GoogleSignInOptions;

 import com.google.android.gms.auth.api.signin.GoogleSignInResult;

 import com.google.android.gms.common.api.GoogleApiClient;

 import com.google.android.gms.common.api.ResultCallback;

 import com.google.android.gms.common.api.Status;

 import com.pegasus.map.R;

 /**

  * Created by ${zyj} on 2016/3/30.

  */

 public class GoogleLogin {

     public int requestCode = 10 ;

     private FragmentActivity activity ;

     public GoogleSignInOptions gso ;

     public GoogleApiClient mGoogleApiClient ;

     public GoogleApiClient.OnConnectionFailedListener listener ;

     private GoogleSignListener googleSignListener ;

     public GoogleLogin(FragmentActivity activity , GoogleApiClient.OnConnectionFailedListener listener ){

         this.activity = activity ;

         this.listener = listener ;

         //初始化谷歌登录服务

         gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)

                 .requestEmail()

                 .requestId()

                 .requestIdToken( activity.getString(R.string.google_server_client_id))

                 .requestProfile()

                 .build();

         // Build a GoogleApiClient with access to GoogleSignIn.API and the options above.

         mGoogleApiClient = new GoogleApiClient.Builder( activity )

                 .enableAutoManage( activity , listener )

                 .addApi(Auth.GOOGLE_SIGN_IN_API, gso)

                 .build();

     }

     /**

      * 登录

      */

     public void signIn() {

         Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);

         activity.startActivityForResult(signInIntent, requestCode);

     }

     /**

      * 退出登录

      */

     public void signOut() {

         Auth.GoogleSignInApi.signOut(mGoogleApiClient).setResultCallback(

                 new ResultCallback<Status>() {

                     @Override

                     public void onResult(Status status) {

                         if ( status.isSuccess() ){

                             if ( googleSignListener != null ){

                                 googleSignListener.googleLogoutSuccess();

                             }

                         }else {

                             if ( googleSignListener!= null ){

                                 googleSignListener.googleLogoutFail();

                             }

                         }

                     }

                 });

     }

     public String handleSignInResult(GoogleSignInResult result) {

         String res = "" ;

         if (result.isSuccess()) {

             //登录成功

             GoogleSignInAccount acct = result.getSignInAccount();

             res = "登录成功"

                     + "用户名为：" + acct.getDisplayName()

                     + "  邮箱为：" + acct.getEmail()

                     + " token为：" + acct.getIdToken()

                     + " 头像地址为：" + acct.getPhotoUrl()

                     + " Id为：" + acct.getId()

                     + " GrantedScopes为：" + acct.getGrantedScopes() ;

             Log.e("res", "res:"+res);

             Toast.makeText( activity, res, Toast.LENGTH_SHORT).show();

             if ( googleSignListener != null ){

                 googleSignListener.googleLoginSuccess();

             }

         } else {

             // Signed out, show unauthenticated UI.

             res = "-1" ;  //-1代表用户退出登录了 ， 可以自定义

             Toast.makeText( activity , "退出登录", Toast.LENGTH_SHORT).show();

             if ( googleSignListener != null ){

                 googleSignListener.googleLoginFail();

             }

         }

         return res ;

     }

     public void setGoogleSignListener( GoogleSignListener googleSignListener ){

         this.googleSignListener = googleSignListener ;

     }

     public interface GoogleSignListener {

         void googleLoginSuccess();

         void googleLoginFail() ;

         void googleLogoutSuccess();

         void googleLogoutFail() ;

     }

 }

注意：当你把 GoogleLogin 类复制到你项目中的时候，activity.getString(R.string.google_server_client_id) 这一句会报错，可以先不用管，在6.5 部分会做说明

6.1 在activity里使用封装类

activity 实现 GoogleApiClient.OnConnectionFailedListener , GoogleLogin.GoogleSignListener 两个接口

6.2

 //初始化谷歌登录服务

 GoogleLogin googleLogin = new GoogleLogin( this , this ) ;

 googleLogin.setGoogleSignListener(this);

6.3

     @Override

     protected void onActivityResult(int requestCode, int resultCode, Intent data) {

         super.onActivityResult(requestCode, resultCode, data);

         //谷歌登录成功回调

         if (requestCode == googleLogin.requestCode ) {

             GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);

             googleLogin.handleSignInResult( result ) ;

         }

     }

6.4

 //登录

 googleLogin.signIn();

  //退出

 googleLogin.signOut();

6.5 获取 google_server_client_id ，并在strings 里面配置

https://console.developers.google.com/projectselector/apis/credentials

在上面的网站里选择

点击选择项目，然后选择你创建的app，进入下面一个界面，得到对应的Client ID