Facebook getLoginStatus() function and phonegap not updating status - facebook

Question

I am currently developing an app on Android using phonegap and would like to use Facebook in the app. I have created an app on Facebook called say "Test". When I am not logged into "Test" but I am logged into Facebook (Facebook app on the Android device) and run the getLoginStatus() function I get a response of unknown instead of not_authorized. Thus my first question is this intended? Am I meant to get a response of unknown or is this an error from phonegap and I'm meant to get a response of not_authorized.
The second question is, when I login into the Facebook app called "test" everything runs as it should (Facebook user gets registered for "test"). When I call the getLoginStatus() function it works perfectly fine and says I'm connected with no problems.
BUT
If I go into Facebook and remove the app "test" from my FB account and then run the android app again and run the getLoginStatus() function is STILL says that I have the app "test" registered to my Facebook account but this is no the case!! Note that I do in the code make sure that I call the server every time instead of using a cached result by the JS SDK. Now my Second question is. Is this meant to happen? Or if not is it a Facebook or Phonegap problem (Phonegap either keeps getting the cached response or Facebook doesn't update their side quick enough?)
Here is code:
function getLoginStatus()
{
FB.getLoginStatus(function(response)
{
alert(JSON.stringify(response));
alert(response.status);
if (response.status == 'connected')
{
alert('logged in');
FB.api('/me',function (response) {
if (response.error)
{
alert('There is an error');
}
else
{
alert(response.name);
}
});
}
else
{
alert('not logged in');
}
},true);
}
Any response would really really be appreciated!!

Answer 1

When I am not logged into "Test" but I am logged into Facebook (Facebook app on the Android device) and run the getLoginStatus() function I get a response of unknown instead of not_authorized.
not_authorized: You get not_authorized when the user is logged into facebook but has not authorized your app. If you transfer the guy to facebook homepage, he enters username and password and cancels authorization, thereafter you get not authorized. IF the guy is logged into facebook,and your app hasn't transferred him to fb to authorize yet, you still get not authorized
https://developers.facebook.com/docs/reference/javascript/FB.getLoginStatus/
unknown: If the user is not logged into facebook, you get a status of unknown.
So logged in, not authorized : not_authorized
Not Logged in: unknown
If I go into Facebook and remove the app "test" from my FB account
I am guessing it takes a while for these changes to propogate. If the user has authorized the app in the current context, it will stay authorized for a while(or until he logs off). I don't think there's anything wrong with this personally

Answer 2

This is not a phonegap issue. unknown is one of the valid responses from the getLoginStatus function. See the facebook API documentation for information about this funciton. There, they describe the unknown response as:
the user is not logged into Facebook at this time and so we don't know if they've authenticated your application or not (unknown)
As to your second question, the problem you are seeing is because by default, the getLoginStatus function caches its response for performance reasons. However, they provide you with a way to force a refresh of the status. You can do this by passing a second parameter, Force into getLoginStatus.
FB.getLoginStatus(function(response) {
// this will be called when the roundtrip to Facebook has completed
}, true); // The second parameter, called 'force' by default is False. True signifies that you want to force a call to the server so you can see the latest login status.
You can read more about that Force parameter by looking at the above API documentation link and searching for the 'Force' parameter.
By the way, I had temporarily deleted the answer as I had answered without knowing how to respond to the second question, but undeleted it after finding out the reason behind your issue.