我正在使用 Google+ Badge API 来获取关注者和 +1。另外，我有使用 Google+ 登录 API 的登录按钮。当我使用登录按钮登录时，它会询问电子邮件权限。但是，当我想关注或 +1 Google+ 页面时，它会要求我登录并且从不要求权限。
<html>
<head>
<title>Demo: Getting an email address using the Google+ Sign-in button</title>
<style type="text/css">
.hide { display: none;}
.show { display: block;}
</style>
<script src="https://apis.google.com/js/plusone.js" type="text/javascript"></script>
<script type="text/javascript">
/*
* Triggered when the user accepts the the sign in, cancels, or closes the
* authorization dialog.
*/
function loginFinishedCallback(authResult) {
if (authResult) {
if (authResult['error'] == undefined){
gapi.auth.setToken(authResult); // Store the returned token.
toggleElement('signin-button'); // Hide the sign-in button after successfully signing in the user.
getEmail(); // Trigger request to get the email address.
} else {
console.log('An error occurred');
}
} else {
console.log('Empty authResult'); // Something went wrong
}
}
/*
* Initiates the request to the userinfo endpoint to get the user's email
* address. This function relies on the gapi.auth.setToken containing a valid
* OAuth access token.
*
* When the request completes, the getEmailCallback is triggered and passed
* the result of the request.
*/
function getEmail(){
// Load the oauth2 libraries to enable the userinfo methods.
gapi.client.load('oauth2', 'v2', function() {
var request = gapi.client.oauth2.userinfo.get();
request.execute(getEmailCallback);
});
// This sample assumes a client object has been created.
// To learn more about creating a client, check out the starter:
// https://developers.google.com/+/quickstart/javascript
gapi.client.load('plus','v1', function(){
var request = gapi.client.plus.people.list({
'userId': 'me',
'collection': 'visible'
});
request.execute(function(resp) {
console.log('Num people visible:' + resp.totalItems);
});
});
// This sample assumes a client object has been created.
// To learn more about creating a client, check out the starter:
// https://developers.google.com/+/quickstart/javascript
gapi.client.load('plus','v1', function(){
var request = gapi.client.plus.people.get({
'userId': 'me'
});
request.execute(function(resp) {
console.log('Retrieved profile for:' + resp.displayName);
console.log(resp);
});
});
}
function getEmailCallback(obj){
var el = document.getElementById('email');
var email = '';
if (obj['email']) {
email = 'Email: ' + obj['email'];
}
//console.log(obj); // Uncomment to inspect the full object.
el.innerHTML = email;
toggleElement('email');
}
function toggleElement(id) {
var el = document.getElementById(id);
if (el.getAttribute('class') == 'hide') {
el.setAttribute('class', 'show');
} else {
el.setAttribute('class', 'hide');
}
}
</script>
</head>
<body>
<div id="signin-button" class="show">
<div class="g-signin" data-callback="loginFinishedCallback"
data-clientid="MY_CLIENT_ID"
data-scope="https://www.googleapis.com/auth/plus.login https://www.googleapis.com/auth/userinfo.profile https://www.googleapis.com/auth/userinfo.email"
data-height="short"
data-cookiepolicy="single_host_origin"
>
</div>
</div>
<!-- Place this tag where you want the badge to render. -->
<div class="g-plus" data-width="210" data-href="//plus.google.com/MY_PAGE_ID" data-rel="publisher" data-theme="dark"></div>
<div id="email" class="hide"></div>
</body>
</html>
有没有办法在用户使用“关注和+1”按钮登录时向他们询问权限？
此外，如果用户已将他/她的个人资料字段（如生日）隐私设置为“只有我”，那么我可以请求这些字段吗？如果是，如何？