Android 應用程式集成Google 登錄

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

1、註冊並且登錄google網站

       https://accounts.google.com/

2、進入google開發者平臺創建應用

     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、在開發者平臺填寫響應的信息，包括 應用名、包名、簽名的SHA-1值

     圖1

      圖2

      圖3

4、在項目中添加谷歌服務

       4.1、在SDK Manager 裡面下載 google service

        4.2、在project目錄下的build.gradle下添加

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

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

        4.3  在model目錄下的build.gradle下添加

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

 5、代碼實現

         5.1、在佈局文件中            

 1  <com.google.android.gms.common.SignInButton
 2             android:id="@+id/google_signIn_bt"
 3             android:layout_width="wrap_content"
 4             android:layout_height="wrap_content" />
 5 
 6         <Button
 7             android:id="@+id/google_loginOut_bt"
 8             android:layout_width="match_parent"
 9             android:layout_height="wrap_content"
10             android:text="google退出登錄"
11             android:layout_gravity="center"
12             android:gravity="center"
13             >
14         </Button>

        5.2、java代碼

  1 package com.pegasus.map.presentation.ui.activity;
  2 
  3 import android.content.Intent;
  4 import android.os.Bundle;
  5 import android.view.View;
  6 import android.widget.Button;
  7 
  8 import com.google.android.gms.auth.api.Auth;
  9 import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
 10 import com.google.android.gms.auth.api.signin.GoogleSignInOptions;
 11 import com.google.android.gms.auth.api.signin.GoogleSignInResult;
 12 import com.google.android.gms.common.ConnectionResult;
 13 import com.google.android.gms.common.SignInButton;
 14 import com.google.android.gms.common.api.GoogleApiClient;
 15 import com.google.android.gms.common.api.ResultCallback;
 16 import com.google.android.gms.common.api.Status;
 17 import com.pegasus.map.R;
 18 import com.pegasus.map.presentation.ui.base.BaseActivity;
 19 
 20 import butterknife.Bind;
 21 import butterknife.ButterKnife;
 22 
 23 /**
 24  * Created by ${zyj} on 2016/3/24.
 25  * 登錄
 26  */
 27 
 28 public class LoginActivity1 extends BaseActivity implements GoogleApiClient.OnConnectionFailedListener , View.OnClickListener  {
 29 
 30     public int RequestCode = 10 ;
 31 
 32     @Bind( R.id.google_signIn_bt )
 33     public SignInButton google_signIn_bt ;
 34 
 35     @Bind( R.id.google_loginOut_bt )
 36     public Button google_loginOut_bt ;
 37 
 38     public GoogleSignInOptions gso ;
 39     public GoogleApiClient mGoogleApiClient ;
 40 
 41     @Override
 42     protected void onCreate(Bundle savedInstanceState) {
 43         super.onCreate(savedInstanceState);
 44         setContentView(R.layout.activity_login);
 45         ButterKnife.bind(this);
 46         init();
 47     }
 48 
 49 
 50     private void init() {
 51         //初始化谷歌登錄服務
 52         gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
 53                 .requestEmail()   //獲取郵箱
 54                 .requestId()      //獲取id 號
 55                 .requestIdToken("456212545785")  //獲取token
 56                 .build();
 57 
 58         // Build a GoogleApiClient with access to GoogleSignIn.API and the options above.
 59         mGoogleApiClient = new GoogleApiClient.Builder( this )
 60                 .enableAutoManage( this , this )
 61                 .addApi(Auth.GOOGLE_SIGN_IN_API, gso)
 62                 .build();
 63 
 64         //登錄
 65         google_signIn_bt.setSize(SignInButton.SIZE_STANDARD);
 66         google_signIn_bt.setScopes(gso.getScopeArray());
 67         google_signIn_bt.setOnClickListener(this) ;
 68 
 69         //退出
 70         google_loginOut_bt.setOnClickListener(this) ;
 71 
 72     }
 73 
 74     @Override
 75     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 76         super.onActivityResult(requestCode, resultCode, data);
 77 
 78         //谷歌登錄成功回調
 79         if ( requestCode == RequestCode ) {
 80             GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
 81             handleSignInResult( result ) ;
 82         }
 83     }
 84 
 85     @Override
 86     public void onConnectionFailed(ConnectionResult connectionResult) {
 87 
 88     }
 89 
 90     @Override
 91     public void onClick(View v) {
 92         switch ( v.getId() ){
 93             case R.id.google_signIn_bt :   //登錄
 94                 signIn();
 95                 break;
 96 
 97             case R.id.google_loginOut_bt :
 98                 signOut();
 99                 break;
100         }
101     }
102 
103     /**
104      * 登錄
105      */
106     private void signIn() {
107         Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
108         startActivityForResult(signInIntent, RequestCode );
109     }
110 
111     /**
112      * 退出
113      */
114     private void signOut() {
115         Auth.GoogleSignInApi.signOut(mGoogleApiClient).setResultCallback(
116                 new ResultCallback<Status>() {
117                     @Override
118                     public void onResult(Status status) {
119                         // ...
120                     }
121                 });
122     }
123 
124     private void handleSignInResult(GoogleSignInResult result) {
125         if (result.isSuccess()) {
126             // Signed in successfully, show authenticated UI.
127             GoogleSignInAccount acct = result.getSignInAccount();
128             //獲取用戶名
129             String name = acct.getDisplayName() ;
130             String email = acct.getEmail() ;
131             String token = acct.getIdToken() ;
132             String id = acct.getId() ;
133 
134         } else {
135             // Signed out, show unauthenticated UI.
136         }
137     }
138 
139 }