iphone - Social framework - how to know if message was sent or not

Question

I'm using Social framework in my project (iOS6), so user can make posts on Facebook or Twitter.

My question is, if there is a way to find out if user have sent a post to social network or he have canceled it and haven't published anything?

I use this code to share posts on Twitter:

-(IBAction)askOnTwitter
{   
    if (SYSTEM_VERSION_LESS_THAN(@"6.0"))
    {
        [self showErrorAlert];
        twitterButton.enabled = NO;
        return;
    }

    if ([SLComposeViewController isAvailableForServiceType:SLServiceTypeTwitter]) 
    {
        slComposeViewController = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeTwitter];

        [slComposeViewController setInitialText:@"Hey"];

        [self presentViewController:slComposeViewController animated:YES completion:nil];

        // So have user published a post or he haven't? How to know?
    }
}

Does somebody know the trick? Thanks in advance.

Answer 1

您可以为撰写视图控制器设置完成处理程序。在那里你会得到结果SLComposeViewControllerResultDone或SLComposeViewControllerCancelled

  __block __weak SLComposeViewController *slComposeViewController = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeTwitter];

 [slComposeViewController setCompletionHandler:^
     (SLComposeViewControllerResult result){

      if (result == SLComposeViewControllerResultDone) {
             NSLog(@"Done successfully");
         }
         else{
             NSLog(@"Cancelled");
         }

         [slComposeViewController dismissViewControllerAnimated:YES completion:nil];
     }];