gistfile1.m

if ([SLComposeViewController isAvailableForServiceType:SLServiceTypeTwitter]) {
		SLComposeViewController *tweetSheet = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeTwitter];
		[tweetSheet addImage:image];
		[tweetSheet setInitialText:[NSString stringWithFormat:@"%@ %@", kSHARETEXT, self.filterName]];
		tweetSheet.completionHandler = ^(SLComposeViewControllerResult result) {
			switch (result) {
				case SLComposeViewControllerResultCancelled:
					[Flurry logEvent:@"Share to twitter - cancelled"];
					break;
				case SLComposeViewControllerResultDone:
					[Flurry logEvent:@"Share to twitter - success"];
					break;
				default:
					break;
			}
			dispatch_async(dispatch_get_main_queue(), ^{
				[vc dismissViewControllerAnimated:YES completion:^{

				}];
			});
		};

		[vc presentViewController:tweetSheet animated:YES completion:^{

		}];
	} else {
		[[[UIAlertView alloc] initWithTitle:@"Sign in with Twitter"
									message:@"Sign in with Twitter on your device"
								   delegate:nil
						  cancelButtonTitle:@"OK"
						  otherButtonTitles:nil, nil] show];
		[Flurry logEvent:@"Share to twitter - no twitter detected alert"];
	}