Log out from facebook - facebook

Question

Well i developing a Flex desktop app and i cant logout form facebook. I mean after loggin in and updating the photo i want to update, i run the method to log out, which looks like this
FacebookDesktop.logout(handleLogout);
Where handleLogout is a function where i can do other things.
The method runs but never log out. I think that maybe loading an other request i could log out, and i find that using:
"https://www.facebook.com/logout.php?" + info.get_accessToken() +
"&next=http://www.Google.com"
would log out, but i dont know where i ca get the accesToken.
Thanks in advance!

Answer 1

The following code is implemented in for asp.net page using C# code.
EXPLANATION
First you need to send a request to authenticate the user(the IF part). You will get a "CODE" on successfull authentication. Then send a request with this code to authorize the application. On successful authorization you will get the access token as response.
protected void Page_Load(object sender, EventArgs e)
{
if (Request.QueryString["code"] != null)
{
Response.Redirect("https://graph.facebook.com/oauth/access_token?client_id=CLIENT_ID&redirect_uri=CURRENT_URL&client_secret=APP_SECRET&code="+Request.QueryString["code"]);
}
else
{
Response.Redirect("https://www.facebook.com/dialog/oauth?client_id=CLIENT_ID&redirect_uri=CURRENT_URL&scope=read_stream");
}
}
HERE IS THE PROCEDURE
Create an asp.net website
In the default.aspx page implement the above code.
Replace CLIENT_ID,APP_SECRET with the AppId and AppSecret respectively
CURRENT_URL should be the url of the page in which you are implementing the code.
The part "&scope=read_stream" is not mandatory. If you need any additional permissions please enter it here as comma separated values.
You will get a string in the format
access_token=ACCESS_TOKEN_VALUE&expires=EXPIRY_TIME
as response.
Try this to send a POST request using flex
var urlLoader:URLLoader = new URLLoader();
var request:URLRequest = new URLRequest("https://www.facebook.com/logout.php?next=YOUR_URL&access_token=ACCESS_TOKEN");
request.data = binaryData;
request.method = URLRequestMethod.POST
urlLoader.load(request);