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PONo Data Returned Using NSURLConnection Asynchronously
 

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    <p>I am having a heck of time with something that seems rather<br> straightforward but I can't seem to get working. I am building an<br> iPhone app that retrieves data from a web host. I am trying to<br> establish an asynchronous connection to the host as I want to keep the<br> device freed up during the connection. (sendSynchronousRequest freezes<br> the phone until the request is done.) Here is my connection code:</p> <pre><code>//temp url to see if data is returned: NSURL *theURL = [NSURL URLWithString:@"http://www.theappleblog.com/feed"]; NSURLRequest *dataRequest = [NSURLRequest requestWithURL:theURL cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:60]; /* establish the connection */ theConnection = [[NSURLConnection alloc] initWithRequest:dataRequest delegate:self startImmediately:YES]; if (theConnection == nil) { NSLog(@"Connection Failure!"); self.urlData = nil; } else { self.urlData = [[NSMutableData data] retain]; } </code></pre> <p>I have all of the appropriate delegate methods set up:</p> <pre><code>-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse*)response { [urlData setLength:0]; UIApplication *application = [UIApplication sharedApplication]; application.networkActivityIndicatorVisible = YES; NSLog(@"Received Response!"); } </code></pre> <p><code></code></p> <pre><code>-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData*)incrementalData { [self.urlData appendData:incrementalData]; NSNumber *resourceLength = [NSNumber numberWithUnsignedInteger:[self.urlData length]]; NSLog(@"resourceData length: %d", [resourceLength intValue]); NSLog(@"filesize: %d", self.urlDataSize); NSLog(@"float filesize: %f", [self.urlDataSize floatValue]); } </code></pre> <p><code></code></p> <pre><code>-(void)connectionDidFinishLoading:(NSURLConnection*)connection { NSLog(@"Connection finished loading\n"); NSLog(@"Succeeded! Received %d bytes of data",[urlData length]); _isFinished = YES; UIApplication *application = [UIApplication sharedApplication]; application.networkActivityIndicatorVisible = NO; } </code></pre> <p><code></code></p> <pre><code>- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { NSLog(@"Error: %@",[error localizedDescription]); } </code></pre> <p>As you can see, I've got a boat-load of log messages because I wanted<br> to see if <em>anything</em> was coming through at all. My connection test<br> comes back as TRUE but no data ever gets loaded. Like I said, I'm sure<br> I must be doing (or not doing) something <em>really</em> stupid. But what?<br> Any help would be most appreciated.</p> <p>Thanks, Lawrence</p>
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    1. COYou should reformat so the code shows up correctly. It's hard to read. Use markdown syntax or even turn on community wiki so that some stranger might fix it for you.
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    2. COWhich of your log messages actually show up?
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    3. CONone of them show up.
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