In Built Twitter use of ios5 in iphone sdk...

1. ///////Main Link For this Demo....http://erwinzwart.com/2011/10/18/tutorial-how-to-post-tweets-with-ios5/#more-245
   
   
   - (IBAction)shareOnTwitter:(id)sender {
2.    
3.     TWTweetComposeViewController *twitter = [[TWTweetComposeViewController alloc] init];
4.    
5.     [twitter setInitialText:@"It's really that simple!"];
6.     [twitter addImage:[UIImage imageNamed:@"twitter.png"]];
7.  
8.     [self presentViewController:twitter animated:YES completion:nil];
9.        
10.     twitter.completionHandler = ^(TWTweetComposeViewControllerResult res) {
11.        
12.         if(res == TWTweetComposeViewControllerResultDone)
13.         {
14.            
15.             UIAlertView* alertView = [[UIAlertView alloc] initWithTitle:@"Succes!" message:@"Your Tweet was posted succesfully" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
16.            
17.             [alertView show];
18.            
19.            
20.         }else if(res == TWTweetComposeViewControllerResultCancelled)
21.         {
22.            
23.             UIAlertView* alertView = [[UIAlertView alloc] initWithTitle:@"Error" message:@"Your Tweet was not posted" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
24.            
25.             [alertView show];
26.            
27.         }
28.        
29.         [self dismissModalViewControllerAnimated:YES];
30.        
31.     };
32.    
33. }