GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
            .requestScopes(new Scope(Scopes.PLUS_LOGIN))
            .requestEmail()
            .requestIdToken("xxxxx.apps.googleusercontent.com")
            .build();

添加 requestScopes（new Scope（Scopes.PLUS_LOGIN））

这对我有帮助，也许对您也有帮助。

this help me, maybe it can help u too.