A basic non blocking download snippet:

// Starts download

• (void)download { NSURL *myURL = [NSURL URLWithString:@”http://www.apple.com/”]; [myURL loadResourceDataNotifyingClient:self usingCache:YES]; }

// This method will be called when the download has finished

• (void)URLResourceDidFinishLoading:(NSURL *)sender { NSData *urlContents = [sender resourceDataUsingCache:YES];

    if ([urlContents writeToFile:[@"~/Documents/applewebsite.html"
                     stringByExpandingTildeInPath]
                     atomically:YES])
    {
            // It was successful, do stuff here
    } else {
            // There was a problem writing the file
    } }
  

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