Question

I implemented Facebook Graph API in my iPhone App and I successfully post it in a wall. But each time I end my application and come back it stores my credentials (in Safari I guess as a cookie). It asks my permission with my previous credentials. But at this point I want my Facebook API should prompt for a new username and password login for requesting permission. In simple I want to logout of my Facebook when i select a button in my App.

Was it helpful?

Solution

How did you log in to facebook in the first place? If you are using facebook iOS SDK, you just basically have to call [facebook logout:self];. Otherwise if you're implementing Graph API yourself you just need to clear out your cookies and delete your access token.

OTHER TIPS

fbGraph.accessToken = nil;
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];
    }
}

when you are call the facebook button at that method last line u wil write this method [facebook logout]

NSHTTPCookieStorage* cookies = [NSHTTPCookieStorage sharedHTTPCookieStorage];
        for (NSHTTPCookie* cookie in [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies])
        {
            [cookies deleteCookie:cookie];
        }

These codes are enough to implement logout functionality.

Its working perfectly on my app.

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