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'

查看最新版本号：https://jcenter.bintray.com/com/google/gms/google-services/

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