Facebook Share Dialog in iOS

Question

I am trying to implement the native Share dialog from Facebook in a sample application.

Seem to have some problem in doing so.

Things I have done so far:

Answer 1

- (IBAction)btn_facebook:(id)sender {
    [self performSelector:@selector(fb_func) withObject:nil afterDelay:0.0];
}

-(void)fb_func
{
    // if the session is closed, then we open it here, and establish a handler for state changes

    [FBSession openActiveSessionWithReadPermissions:nil allowLoginUI:YES completionHandler:^(FBSession *session,FBSessionState state, NSError *error)
     {
         if (error)
         {
             UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Error" message:error.localizedDescription delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
             [alertView show];
         }
         else if(session.isOpen)
         {
             NSString *str_link = @"";
             NSLog(@"%@",str_link);

             NSDictionary *params = @{
                                      @"name" :@"name",
                                      @"caption" : @"Description",
                                      @"description" :@"test",
                                      @"picture" : PostimageToPintresrAndFacebook,
                                      @"link" : @"url",
                                      };

             // Invoke the dialog
             [FBWebDialogs presentFeedDialogModallyWithSession:nil
                                                    parameters:params
                                                       handler:
              ^(FBWebDialogResult result, NSURL *resultURL, NSError *error) {
                  if (error) {
                      NSLog(@"Error publishing story.");
                  } else {
                      if (result == FBWebDialogResultDialogNotCompleted) {
                          NSLog(@"User canceled story publishing.");
                      } else {
                          NSLog(@"Story published.");
                      }
                  }}];
         }
     }];
    return;

}