当用户在多个google帐户中登录时显示多个登录弹出窗口,如果用户只在一个帐户中登录,则绕过登录弹出窗口

我正致力于在web应用程序上添加google登录流。想知道我们是否能实现这个功能,

1. 如果用户登录了多个google帐户,则显示多登录弹出窗口,用户可以在其中选择帐户。

我想 auth2.signIn ,它检查有多少帐户存在,并在此基础上实现上述用例。

作为进一步的上下文,登录页代码的javascript当前为:

<script src="https://apis.google.com/js/platform.js?onload=init_google_signin" async defer></script>
<script>
function init_google_signin() {
        var auhtInstance,
            clientID = 'client_id';

        auhtInstance = gapi.load('auth2', function () {
          /**
           * Retrieve the singleton for the GoogleAuth library and set up the
           * client.
           */
          auth2 = gapi.auth2.init({
            client_id: clientID,
            scope: 'email profile'
          });
        });
      }
</script>

function handleGoogleSignIn() {
    var GoogleAuth,
        currentUser,
        googleAuthPromise;

    GoogleAuth = gapi.auth2.getAuthInstance();
    currentUser = GoogleAuth.currentUser.get();

    if (currentUser && currentUser.isSignedIn()) {
       // submit form with access_token and user info, service will redirect user to logged-in page
       setGoogleFormValues(currentUser, currentUser.getBasicProfile());
    } else {
       googleAuthPromise = GoogleAuth.signIn();
       googleAuthPromise.then(function (user) {
          // submit form with access_token and user info, service will redirect user to logged-in page
          setGoogleFormValues(currentUser, currentUser.getBasicProfile());
       });
    }
} 

1. 当用户从app注销时,从google注销 GoogleAuth.signOut();

2. GoogleAuth.disconnect();

3. 使用 prompt: 'select_account' 签名时,手摇签名看起来像,

    function handleGoogleSignIn() {
       var GoogleAuth,
           currentUser,
           googleAuthPromise;
   
       GoogleAuth = gapi.auth2.getAuthInstance();
       currentUser = GoogleAuth.currentUser.get();
   
       googleAuthPromise = GoogleAuth.signIn(prompt: 'select_account');
       googleAuthPromise.then(function (user) {
          // submit form with access_token and user info, service will redirect user to logged-in page
          setGoogleFormValues(currentUser, currentUser.getBasicProfile());
          });
       }
   } 
   

这三个修复总是打开弹出窗口,因此它修复了第一个用例,但在第二个用例中失败了。