How to gey Sessionkey from new FaceBook SDK in iphone

Can any one help me in this:

I used new FaceBook SDK, and there is no Session seen any where. How can we get Session key after logging in to Facebook.

Im using '- (void)fb开发者_高级运维DidLogin;' method after login to facebook.

Thanks in advance

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Assuming you are using the Facebook connect api. You'd have to create a FBSession object and initialize in either initWithNibName or ViewDidLoad. This object automatically gets populated with the session key once the user has been authenticated.

    FBSession *session = [[FBSession sessionForApplication:@"bla bla" secret:@"bla bla" 
                    delegate:self]retain];