與Android

Question

我能收到谷歌ID標記GoogleSignInAccount.getIdToken()這樣，我對如何處理它幾個問題，谷歌ID令牌工作

1. 令牌約1KB string.I不能發送與每個服務器請求。那麼，如何才能在服務器端驗證它的正確方法是什麼？
2. 我沒有看到刷新id令牌的方法。這是否會在GoogleSignInAccount類中自動發生？
3. 谷歌方面對令牌驗證有任何限制（配額）嗎？

Answer 1

1.To不超載服務器我們決定以產生具有相同的到期時間內（短）的訪問令牌（1小時）

2.Token刷新可以再次調用登錄功能來實現：

private void loginGoogle(){ 
     //context is Activity 
     GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN) 
       .requestIdToken(context.getString(R.string.default_web_client_id)).requestEmail() 
       .build(); 
     if (googleApiClient!=null) { 
      googleApiClient.stopAutoManage((FragmentActivity) context); 
      googleApiClient.disconnect(); 
     } 
     googleApiClient = new GoogleApiClient.Builder(context) 
       .enableAutoManage((FragmentActivity) context, new GoogleApiClient.OnConnectionFailedListener() { 
        @Override 
        public void onConnectionFailed(@NonNull ConnectionResult connectionResult) { 
         Log.d("auth", "connection failed"); 
        } 
       }) 
       .addApi(Auth.GOOGLE_SIGN_IN_API, gso) 
       .build(); 
     // 
     OptionalPendingResult<GoogleSignInResult> opr = 
       Auth.GoogleSignInApi.silentSignIn(googleApiClient); 
     if (opr.isDone()) { 
      GoogleSignInResult r = opr.get(); 
      Log.d("auth", "google silent signin sync"); 
      fillGoogleProfile(r.getSignInAccount()); 
     } else { 
      opr.setResultCallback(new ResultCallback<GoogleSignInResult>() { 
       @Override 
       public void onResult(@NonNull GoogleSignInResult result) { 
        Log.d("auth", "google silent signin async"); 
        if (result.getSignInAccount()==null) { 
         Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(googleApiClient); 
         //catch result in the onActivityResult 
         context.startActivityForResult(signInIntent, RC_SIGN_IN); 
         return; 
        } 
        fillGoogleProfile(result.getSignInAccount()); 
       } 
      }); 
     } 
    } 

3.仍未找到答案