Does the Twitter iOS API provide any way of determining if the tweet was successful?

Question

I'm using the following snippet of code to make a tweet in my iOS 5 application :

- (IBAction)postToTwitterClicked:(id)sender 
{
    if ([TWTweetComposeViewController canSendTweet])
    {
        TWTweetComposeViewController *tweetSheet = [[TWTweetComposeViewController alloc]init];
        [tweetSheet setInitialText:@"Some sample message here"];
        [tweetSheet addURL:[NSURL URLWithString:@"http://myURL"]];

        [self presentModalViewController:tweetSheet animated:YES];
    }
    else 
    {
        UIAlertView *av = [[UIAlertView alloc] initWithTitle:@"Unable to tweet"
                                                     message:@"Please ensure that you have at least one twitter account setup and have internet connectivity. You can setup a twitter account in the iOS Settings > Twitter > login."
                                                    delegate:self 
                                           cancelButtonTitle:@"OK" 
                                           otherButtonTitles:nil];
        [av show]; 
    }
}

This works fine, but how do I know that the user did actually post a tweet, or if there was a problem?

Since this doesn't implement a delegate, there are no "onError" methods that I can override.

I want to know if the user did successfully post a tweet, so I can action some behaviour such as

1. Disable a button so they can't do it again
2. Notify them the post was successful and will show up in their feed shortly

Answer 1

There is no way in the iOS Twitter API that you can see that a Tweet actually was posted on the server. But you can analyze the TWTweetComposeViewControllerResult to see if the tweet was finished composing successfully or if the tweet was cancelled.

twitter.completionHandler = ^(TWTweetComposeViewControllerResult res) {
    if (res == TWTweetComposeViewControllerResultDone) {
         // Composed
    } else if (res == TWTweetComposeViewControllerResultCancelled) {
        // Cancelled
    }
    [self dismissModalViewControllerAnimated:YES];
};