NSURLConnection delegate method

Question

I am having a hard time to find any examples for NSURLConnection delegate method implementations.

I want to send data with a HTTP post with a button click. Not sure how to make a "submitting" screen and "submitted". (I know how to use spinner and will use them)

I am using this code under a botton click action, but unable to use any delegate stuff. Not sure how to implement them with my current set up.

NSMutableURLRequest *request = 
    [[NSMutableURLRequest alloc] initWithURL:
     [NSURL URLWithString:@"http://myURL.com"]];

    [request setHTTPMethod:@"POST"];

    NSString *postString = [wait stringByAppendingString:co];

    [request setValue:[NSString 
                       stringWithFormat:@"%d", [postString length]] 
   forHTTPHeaderField:@"Content-length"];



    [request setHTTPBody:[postString 
                          dataUsingEncoding:NSUTF8StringEncoding]];

    //[[NSURLConnection alloc] initWithRequest:request delegate:self];
    [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];


    [SVProgressHUD dismissWithSuccess:@"Submission Successful"];

Answer 1

You need to use the new NSURLConnectionDataDelegate protocol.

I found some exemples here:

http://blog.kemalkocabiyik.com/index.php/2012/02/fetching-data-with-getpost-methods-by-using-nsurlconnection/

And if you can read portuguese: http://www.quaddro.com.br/blog/desenvolvimento-ios/baixando-conteudo-com-nsurlconnection-e-nsurlconnectiondatadelegate-no-ios