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JS Facebook登录iOS8

[英]JS Facebook login iOS8

The login button on my facebook app has completely stopped working in iOS 8. I thought it was something I have done but when I take facebooks sample html from their site and apply it to my page it still doesnt work (my app id has been replaced with xxxxx). 我的Facebook应用程序上的登录按钮已在iOS 8中完全停止工作。我认为这是我做的事情,但是当我从其网站上获取Facebook示例html并将其应用到我的页面时,它仍然不起作用(我的应用程序ID已被替换)与xxxxx)。 Basically the pop up window opens for facebook auth but never closes and returns to my app. 基本上,弹出窗口针对facebook auth打开,但是从不关闭并返回到我的应用程序。 Im just left with a blank which tab open: 我刚刚留下空白,哪个标签打开了:

<!DOCTYPE html>
<html>
<head>
    <title>Facebook Login JavaScript Example</title>
    <meta charset="UTF-8">
</head>
<body>
    <script>
        // This is called with the results from from FB.getLoginStatus().
        function statusChangeCallback(response) {
            console.log('statusChangeCallback');
            console.log(response);
            // The response object is returned with a status field that lets the
            // app know the current login status of the person.
            // Full docs on the response object can be found in the documentation
            // for FB.getLoginStatus().
            if (response.status === 'connected') {
                // Logged into your app and Facebook.
                testAPI();
            } else if (response.status === 'not_authorized') {
                // The person is logged into Facebook, but not your app.
                document.getElementById('status').innerHTML = 'Please log ' +
                  'into this app.';
            } else {
                // The person is not logged into Facebook, so we're not sure if
                // they are logged into this app or not.
                document.getElementById('status').innerHTML = 'Please log ' +
                  'into Facebook.';
            }
        }

        // This function is called when someone finishes with the Login
        // Button.  See the onlogin handler attached to it in the sample
        // code below.
        function checkLoginState() {
            FB.getLoginStatus(function (response) {
                statusChangeCallback(response);
            });
        }

        window.fbAsyncInit = function () {
            FB.init({
                appId: 'xxxxxxxxxxxxx',
                cookie: true,  // enable cookies to allow the server to access
                // the session
                xfbml: true,  // parse social plugins on this page
                version: 'v2.1' // use version 2.1
            });

            // Now that we've initialized the JavaScript SDK, we call
            // FB.getLoginStatus().  This function gets the state of the
            // person visiting this page and can return one of three states to
            // the callback you provide.  They can be:
            //
            // 1. Logged into your app ('connected')
            // 2. Logged into Facebook, but not your app ('not_authorized')
            // 3. Not logged into Facebook and can't tell if they are logged into
            //    your app or not.
            //
            // These three cases are handled in the callback function.

            FB.getLoginStatus(function (response) {
                statusChangeCallback(response);
            });

        };

        // Load the SDK asynchronously
        (function (d, s, id) {
            var js, fjs = d.getElementsByTagName(s)[0];
            if (d.getElementById(id)) return;
            js = d.createElement(s); js.id = id;
            js.src = "//connect.facebook.net/en_US/sdk.js";
            fjs.parentNode.insertBefore(js, fjs);
        }(document, 'script', 'facebook-jssdk'));

        // Here we run a very simple test of the Graph API after login is
        // successful.  See statusChangeCallback() for when this call is made.
        function testAPI() {
            console.log('Welcome!  Fetching your information.... ');
            FB.api('/me', function (response) {
                console.log('Successful login for: ' + response.name);
                document.getElementById('status').innerHTML =
                  'Thanks for logging in, ' + response.name + '!';
            });
        }
    </script>
    <!--
      Below we include the Login Button social plugin. This button uses
      the JavaScript SDK to present a graphical Login button that triggers
      the FB.login() function when clicked.
    -->

    <fb:login-button scope="public_profile,email" onlogin="checkLoginState();">
    </fb:login-button>

    <div id="status">
    </div>

</body>
</html>

The only solution I came up with is to degrade back to the server-side authentication flow when on iOS using full on redirects. 我想出的唯一解决方案是在iOS上使用完全重定向将其降级到服务器端身份验证流程。 Basically your app should hit a URL like this: 基本上,您的应用应点击以下网址:

https://www.facebook.com/dialog/oauth?
    client_id={app-id}
   &redirect_uri={redirect-uri}

Which is a jarring experience on desktop, but is arguably a nicer experience on mobile, given that the user isn't taken through the weird tab switching (which is the root of the new problem in the first place). 考虑到用户并没有通过奇怪的选项卡切换(这首先是新问题的根源),这在台式机上是一种震撼的体验,但是在移动设备上却可以说是更好的体验。 To degrade to this flow ONLY on iOS, make sure your sign-in link is actually an href to the facebook authentication dialog (like the link above, or for you omniauth users on rails, is “/auth/facebook”). 要仅在iOS上降级到此流程,请确保您的登录链接实际上是Facebook身份验证对话框的href(如上面的链接,或者对于您来说,在rails上的omniauth用户是“ / auth / facebook”)。 Then wrap the javascript where you invoke the client side flow in code that prevents it from being run on iOS (or all of mobile, if you want). 然后,将JavaScript封装在您调用客户端流程的位置,并编写阻止其在iOS(或所有移动设备,如果需要)上运行的代码。

if(!/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)) {
[Facebook client side flow code here]
}

(please let me know in comments if anyone has a more elegant way of doing this) (请在评论中让我知道是否有人有更优雅的方法)

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