AppDelegate *appDelegate=[[UIApplication sharedApplication] delegate];



                            appDelegate.session = [[FBSession alloc] initWithPermissions:[NSArray arrayWithObjects:@"publish_stream", nil]];


                        [appDelegate.session openWithCompletionHandler:^(FBSession *session, FBSessionState status, NSError *error) {
                            switch (status) {
                                case FBSessionStateOpen:
                                [FBNativeDialogs presentShareDialogModallyFrom:currentController initialText:nil image:nil url:nil handler:^(FBNativeDialogResult result, NSError *error) {
                            NSLog(@"New Native FB Dialog Error= %@",error);
                        }];
                                    break;

                                default:
                                    break;
                            }
                        }];