Twitter iOS Native

gistfile1.m

    // Don't forget to include Twitter/Twitter.h into your implementation for this to work!

    // Both amountSavedString and numDaysString are simple strings containing... well what they say.
    NSString *tweet = [NSString stringWithFormat:@"I've saved %@ by not smoking for %@ with @getkickit", amountSavedString, numDaysString];
    
    TWTweetComposeViewController *twitter = [[TWTweetComposeViewController alloc] init]; 
    
    [twitter setInitialText:tweet];
    
    if([TWTweetComposeViewController canSendTweet])
        [self presentViewController:twitter animated:YES completion:nil]; 
    else { 
        UIAlertView* alertView = [[UIAlertView alloc] initWithTitle:@"Unable to tweet" message:@"You must be running iOS5 to send a tweet." delegate:self cancelButtonTitle:@"Dismiss" otherButtonTitles:nil];
        [alertView show]; 
        [alertView release]; 
        return; 
    } 
    
    twitter.completionHandler = ^(TWTweetComposeViewControllerResult res)
    { 
        if (res == TWTweetComposeViewControllerResultDone)
        { 
            UIAlertView* alertView = [[UIAlertView alloc] initWithTitle:@"Tweet Successful!" message:@"Your tweet has been posted successfully." delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; 
            [alertView show]; 
            [alertView release];
        } 
        else if (res == TWTweetComposeViewControllerResultCancelled)
        { 
            UIAlertView* alertView = [[UIAlertView alloc] initWithTitle:@"Oooops!" message:@"Tweet Failed to send, try again later" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; 
            [alertView show];
            [alertView release];
        } 
        
        [self dismissModalViewControllerAnimated:YES]; 
        [twitter release]; 
    };