Android 集成 google 登录并获取性别等隐私信息

前言

公司做海外产品的，集成的是 google 账号登录，账号信息、邮箱等这些不涉及隐私的按 google 的正常登录流程可以轻松实现。但是一旦需要获取涉及隐私的信息就比较麻烦，文档也不是十分清晰，非常难找，很多坑。

google 账号登录

官方链接：https://developers.google.com/identity/sign-in/android/start
https://developers.google.com/identity/sign-in/android/sign-in
google 账号登录接入的坑：

申请的 client_id必须是 api console 后台：https://console.cloud.google.com/apis 与 google play 后台对应的应用关联起来。
client_id 下的签名信息和报名信息必须和测试时的 apk 的签名信息和报名信息一致。
在 google play 下启动 google 的二次签名，则 api console 后台的签名信息是二次签名后的信息。打包测试时使用上传到 Google play 后台的 apk 的签名证书即可。

google 登录的流程在这个文档写的比较清楚了：https://developers.google.com/identity/sign-in/android/sign-in，这里大致说一下，不贴代码了

构建需求请求的内容：

GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN).requestEmail().requestIdToken("your client_id").build();
// Build a GoogleSignInClient with the options specified by gso.
mGoogleSignInClient = GoogleSignIn.getClient(this, gso);

2.发起登录请求，跳转 google 登录页面。

Intent signInIntent = mGoogleSignInClient.getSignInIntent();startActivityForResult(signInIntent, RC_SIGN_IN);

获取 Google 登录返回

@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);handleSignInResult(task);}
}

获取用户 id token,传到你自己的服务端做验证

private void handleSignInResult(Task<GoogleSignInAccount> completedTask) {try {GoogleSignInAccount account = completedTask.getResult(ApiException.class);// Signed in successfully, show authenticated UI. } catch (ApiException e) {// The ApiException status code indicates the detailed failure reason.// Please refer to the GoogleSignInStatusCodes class reference for more information.Log.w(TAG, "signInResult:failed code=" + e.getStatusCode());    }
}

切换账号

  /*** 重新获取账号列表*/public void revokeAccess() {try {if (mGoogleSignInClient!=null && mActivity!=null){mGoogleSignInClient.revokeAccess().addOnCompleteListener(mActivity, new OnCompleteListener<Void>() {@Overridepublic void onComplete(@NonNull Task<Void> task) {Log.d(TAG, "onComplete: ");}});}} catch (Exception e){e.printStackTrace();}}

获取公开资料和需要特别授权的信息（性别、生日等）

1、在构建请求是新增获取的公共资料信息及需要获取的特殊信息

private static final String GENDER_SCOPE = "https://www.googleapis.com/auth/user.gender.read";
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN).requestEmail().requestIdToken("your client_id").requestScopes(new Scope(GENDER_SCOPE));.build();
// Build a GoogleSignInClient with the options specified by gso.
mGoogleSignInClient = GoogleSignIn.getClient(this, gso);

需要请求的信息可在如下链接查找：https://developers.google.com/people/api/rest/v1/people/get

2、检测是否有权限

  GoogleSignInAccount lastSignedInAccount = GoogleSignIn.getLastSignedInAccount(mActivity);Scope scope = new Scope(GENDER_SCOPE);if (Utils.isNeedRequest() && !GoogleSignIn.hasPermissions(lastSignedInAccount,scope)){SGLog.d(TAG+"   need requst permission...");GoogleSignIn.requestPermissions(mActivity,RC_GET_TOKEN,lastSignedInAccount,scope);}

注意：这一步不需要也可以，有这一步会出现一个 “再确认” 的授权页面，没有也不影响获取的信息。
3、跳转登录页面（同以上 google 账号登录）
4、获取登录信息（同以上 Google账号登录）
5、开启线程获取特殊信息

 getProfileAsyncTask = new GetProfileAsyncTask(mActivity, new GpProfileInfoCallback() {@Overridepublic void onGetProfileInfo(Person person) {SGLog.d(TAG+" onGetProfileInfo... ");getProfileInfo(person);}});getProfileAsyncTask.execute(signInAccount);

异步任务

// Global instance of the HTTP transportprivate static final HttpTransport HTTP_TRANSPORT = AndroidHttp.newCompatibleTransport();// Global instance of the JSON factoryprivate static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();private static class GetProfileAsyncTask extends AsyncTask<GoogleSignInAccount, Void, Person> {// Retrieved from the sigin result of an authorized GoogleSignInprivate WeakReference<Activity> mActivityRef;private GpProfileInfoCallback mProfileInfoCallback;public GetProfileAsyncTask(Activity activity,GpProfileInfoCallback callback) {mActivityRef = new WeakReference<>(activity);mProfileInfoCallback = callback;}@Overrideprotected Person doInBackground(GoogleSignInAccount... params) {if (mActivityRef.get() == null){SGLog.d(TAG+" GetProfileAsyncTask doInBackground activity is null.");return null;}GoogleSignInAccount signInAccount = params[0];Context context = mActivityRef.get().getApplicationContext();GoogleAccountCredential credential = GoogleAccountCredential.usingOAuth2(context,Collections.singleton(GENDER_SCOPE));credential.setSelectedAccount(signInAccount.getAccount());SGLog.d(TAG+" get profile info start.");PeopleService service =new PeopleService.Builder(HTTP_TRANSPORT, JSON_FACTORY, credential).setApplicationName(ApkUtils.getAppName(context)) // your app name.build();SGLog.d(TAG+" get profile info start.");// Get info. on userPerson person =null;try {person = service.people().get("people/me").setPersonFields("genders").execute();SGLog.d(TAG+"  getPerson end.");// return the resultif (mProfileInfoCallback!=null){mProfileInfoCallback.onGetProfileInfo(person);}} catch (Exception e) {SGLog.e(TAG+e.getMessage());if (mProfileInfoCallback!=null){mProfileInfoCallback.onGetProfileInfo(null);}e.printStackTrace();}return person;}@Overrideprotected void onPostExecute(Person aVoid) {super.onPostExecute(aVoid);}}

获取性别信息

 private void getProfileInfo(Person person){SGLog.d(TAG+" executeProfileInfo...");if (person == null){notifyResult(mLastUser,Utils.SUCCESS);}else {try {List<Gender> genders = person.getGenders();Gender gender = genders.get(0);String value = gender.getValue();SGLog.d(TAG+"  genders:"+genders.size()+ "  gender:"+value);mLastUser.setGender(value);notifyResult(mLastUser,Utils.SUCCESS);}catch (Exception e){SGLog.e(TAG+" getProfileInfo error.");notifyResult(null,SGErrorCode.LOGIN_FAILED);e.printStackTrace();}}}

参考文献：
https://developers.google.com/identity/sign-in/android/sign-in
https://developers.google.cn/android/guides/http-auth
https://developers.google.com/people/api/rest/?apix=true
https://github.com/googlesamples/google-services/tree/master/android/signin
https://developers.google.com/people/api/rest/v1/people/get