FB.getLoginStatus不会触发回调函数 [英] FB.getLoginStatus does not fires callback function

问题描述

我有一个困难的问题。我很难通过网络和StackOverflow以及整个FBJS SDK文档进行搜索，并没有找到答案。

我正在建立一个页面选项卡应用程序，我想让粉丝rsvp的事件。所以我必须检查用户是否登录，如果不需要登录。这听起来很简单，但FB.getLoginStatus不会触发回调函数。这是代码摘录：

  FB.init（{
 appId：window.appID，
 status ：true，
 xfbml：true，
 cookie：true，
 oauth：true，
 channelUrl：'http://example.com/fb/channel.html'
}）; 
  

然后我简单地说 - 当然用户点击一个按钮 - 调用FB.getLoginStatus，但是它似乎没有做任何事情。

我已经检查了沙箱模式，FB.init成功，应用程序设置和开发环境中的URL。我可以调用FB.ui，虽然FB.ui使用方法：'oauth'我收到一条错误消息，说redirect_uri参数不能与next参数一起使用，这是不推荐使用的。这是非常奇怪的，因为我没有使用下一个参数。但是当我设置在未定义的旁边，它工作正常，我得到窗口，但它说应用程序配置不允许给定URL。可以期待，我可以登录，然后我有access_token。但是在新窗口中，getLoginStatus仍然不会执行任何操作。

所以欢迎任何建议。

谢谢，
Tamas

更新：

 code> function onBodyLoad（）{// on body onload 
 FB.init（{
 appId：window.appID，
 status：true，
 xfbml：true， 
 cookie：true，
 oauth：true，
 channelUrl：'http://example.com/fb/channel.html'
}）; 
} 
 ... 
 function getName（）{// on button onclick 
 FB.getLoginStatus（function（response）{
 if（response.authResponse）
 {
 window.loggedIn = true; 
 debugString（'Logged in'）; 
} else 
 {
 window.loggedIn = false; 
 debugString（'not logged in'）; 
} 
}，true）; 
 if（window.loggedIn === undefined）{
 debugString（'getLoginStatus does not exec'）; //我总是得到这个消息
} 
  

}

更新2 ：我在一个不同的网址上创建了一个新的应用程序，它被配置为一个独立的网站。这些代码工作完美，我可以getLoginStatus，我可以登录等。在FB的上下文中和在使用FB JavaScript SDK的独立网站中有什么区别吗？

解决方案

当您在与您注册的域不同的域上运行网站时，FB.getLoginStatus 不会触发回调该应用程序与。当我正在本地开发或在分段服务器上时，我通常会发现自己处于这种情况。

例如，如果您使用 example.com 注册该网站，而您的登台服务器是 example.mystagingserver.com ，回调不会发火。在这种情况下，您需要在Facebook中创建第二个应用程序，并将新应用程序的应用程序ID和密码用于。

I have a difficult problem. Difficult means I searched through the net and StackOverflow as well the whole FBJS SDK documentation and haven't find answer.

I am building a Page Tab application where I'd like to let fans to rsvp events. So I have to check if the user is logged in and if it doesn't I have to login. That sounds pretty easy, but FB.getLoginStatus doesn't fires callback function. This is the code excerpt:

FB.init({
   appId: window.appID,
   status: true,
   xfbml: true,
   cookie: true,
   oauth: true,
   channelUrl: 'http://example.com/fb/channel.html'
 }); 

and then I simply - of course after the user clicks on a button - call FB.getLoginStatus, but it seems it doesn't do anything.

I've already checked sandbox mode, FB.init success, URLs in application settings and developing environment. I can call FB.ui, although FB.ui with method: 'oauth' I get an error message saying " The "redirect_uri" parameter cannot be used in conjunction with the "next" parameter, which is deprecated.". Which is very weird because I didn't used "next" parameter. But when I set next to undefined, it works fine, I get the window, but it says "Given URL is not allowed by the Application configuration.". Expect from that, I can login, then I've got the access_token. But in the new window, getLoginStatus still doesn't do anything.

So any advices are welcome.

Thanks, Tamas

UPDATE:

function onBodyLoad() { //on body onload
    FB.init({
     appId: window.appID,
     status: true,
     xfbml: true,
     cookie: true,
     oauth: true,
     channelUrl: 'http://example.com/fb/channel.html'
    });     
   }
...
function getName() { // on button onclick
 FB.getLoginStatus(function(response){
  if (response.authResponse)
   {
    window.loggedIn = true;
    debugString('Logged in');
   } else
   {
    window.loggedIn=false; 
    debugString('Not logged in');
   }
}, true);
if (window.loggedIn === undefined)   {
     debugString('getLoginStatus did not exec'); // I always get this message
  }

}

UPDATE 2: I created a new App on a different URL, which is configured as a standalone website. There these codes work perfectly, I can getLoginStatus, I can login, etc. Is there any difference working in the context of FB, and in a standalone website, using FB JavaScript SDK?

解决方案

FB.getLoginStatus does not fire the callback when you are running the website on a different domain than the one that you registered the app with. I usually find myself in this situation when I am developing locally or on a staging server.

For example, if you registered the site with example.com and your staging server is example.mystagingserver.com, the callback wont fire. In this case, you need to create a second application in Facebook and use the Application ID and Secret for the new app.

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