FBLogout using graph API. never ask Login credentials again.

[goldenlife]

Hi All,

I have used this code for logout from facebook. but it doesn't properly logout from the facebook. it doesn't ask for new login credentials.

NSHTTPCookie *cookie;
NSHTTPCookieStorage *storage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
for (cookie in [storage cookies])
{
NSString* domainName = [cookie domain];
NSRange domainRange = [domainName rangeOfString"facebook"];
if(domainRange.length > 0)
{
[storage deleteCookie:cookie];
}
}
but it seems it doesn't delete facebook cookies.
I tried to print [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]
to see cookies list, but it seems empty.

How can I delete facebook login cookies? so that user can logout and login from the new user account, not same.

I have done changes in Authorize function of facebook also
[self authorizeWithFBAppAuth:YES safariAuth:NO];

if I make this then logout function works but login page get opened in webview not in safari.
I want to open login page in safari itself from my app.
Anybody can tell me how to do successfully logout from facebook and open login page in safari?

Thanks,