Facebook iFrame app - getting rid of vertical scrollbars?

问题

I've converted a Facebook app from FBML to iFrame (with PHP SDK) and now have vertical scrollbars displayed for the same amount of content I had before (a logo, a flash game and a line with 3 links below). But earlier I didn't have any scrollbars.

If I set the app setting Auto-Resize, then the lower part of content isn't displayed at all - which is bad, the flash game is unplayable then.

I've searched around and all suggested solutions involve Javascript, but I'm actually using PHP SDK. Isn't there a solution for PHP/CSS only?

Below my current code:

<?php

require_once('facebook.php');

define('FB_API_ID', 'XXX');
define('FB_AUTH_SECRET', 'XXX');

$facebook = new Facebook(array(
            'appId'  => FB_API_ID,
            'secret' => FB_AUTH_SECRET,
            'cookie' => true,
            ));

if (! $facebook->getSession()) {
    printf('<script type="text/javascript">top.location.href="%s";</script>',
        $facebook->getLoginUrl(
                array('canvas'    => 1,
                      'fbconnect' => 0,
                      #'req_perms' => 'user_location',
        )));
    exit();
} else {
    try {
        $me = $facebook->api('/me');

        $first_name = $me['first_name'];
        $city       = $me['location']['name'];
        $female     = ($me['gender'] == 'male' ? 0 : 1);
        $avatar     = 'http://graph.facebook.com/' . $me['id'] . '/picture?type=large';

    } catch (FacebookApiException $e) {
        exit('Facebook error: ' . $e);
    }
}

# print the logo, the flash game and 3 links

?>

Also I'm not sure if my PHP-script is supposed to print

<html>
<body> 
.....
</body>
</html>

? Currently I only print what's inside the body.

And I wonder if it is a good idea to replace top.location.href=.... in my code by PHP's header('Location: ....');?

回答1:

If you are going to use the Asynchronous method, it's recommended that you put as much of FB code within it. Something like the below should work:

<html>
<head>
</head>
<body>
<div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
    FB.init({appId: 'your app id', status: true, cookie: true,
             xfbml: true});
    FB.Canvas.setSize();
};

function sizeChangeCallback() {
    FB.Canvas.setSize();
}
(function() {
var e = document.createElement('script'); e.async = true;
e.src = document.location.protocol +
  '//connect.facebook.net/en_US/all.js';
document.getElementById('fb-root').appendChild(e);
}());
</script>
</body>
</html>

Now you will call the sizeChangeCallback() function whenever you make a change to the layout (clicking new tab, loading Ajax content...etc).

回答2:

Ok, I've found the solution:

<html>
<head>
<script type="text/javascript">
window.fbAsyncInit = function() {
        FB.Canvas.setSize();
}

function sizeChangeCallback() {
        FB.Canvas.setSize();
}
</script>
</head>
<body>
......

<div id="fb-root"></div>
<script src="http://connect.facebook.net/en_US/all.js"></script>
<script>
FB.init({
        appId  : '<?php print(FB_API_ID); ?>',
        status : true,
        cookie : true,
        xfbml  : true
});
</script>
</body>
</html>

and set IFrame Size to Auto-resize in the settings tab.

And header('Location: ' . $url); won't work for whatever reason.

回答3:

I just put together a quite extensive tutorial on my blog, also using the PHP-SDK. Besides getting rid of those scrollbars I also show how to create a Fan-Gate and a simple Share-Button. I hope I can help some of you guys with that:

http://net-bites.de/facebook/tutorial-how-to-create-facebook-iframe-pages-for-timeline-width-810px-with-fan-gate-and-share-button/

回答4:

My Sollution works every time! Make your body overflow hidden then before add this.

<div id="fb-root" class="fb_reset"><script async="" src="https://connect.facebook.net/en_US/all.js"></script></div>
   <script type="text/javascript">
       window.fbAsyncInit = function() {
           FB.init({appId: '293887700673244', status: true, cookie: true, xfbml: true, oauth: true});
           window.setTimeout(function() {
               FB.Canvas.setAutoGrow(); }, 250);
       };

       (function() { var e = document.createElement('script');
           e.async = true;
           e.src = document.location.protocol + '//connect.facebook.net/en_US/all.js';
           document.getElementById('fb-root').appendChild(e); }());
   </script>

来源：https://stackoverflow.com/questions/5928724/facebook-iframe-app-getting-rid-of-vertical-scrollbars

标签

php

facebook

iframe

scrollbar

facebook-iframe