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PONSURLConnection doen't return data where dataWithContentsOfURL does
 

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    <p>I have an application and I used to get my json data with <code>dataWithContentsOfURL</code>.<Br> But because I need to get it an asynchrone fashion.<br> Now that I use <code>NSURLConnection</code> to handle this I don't receive any useful data all I get is statuscode 200 in the <code>didReceiveResponse</code> method but <code>didReceiveData</code> is never called. And at <code>connectionDidFinishDownloading</code> <code>destinationURL</code> returns <code>null</code>.</p> <p>I have no idea wat couses this problem and I would really appreciate some help.</p> <p>the delegate</p> <pre><code>#import "NetWorkToGuiDelegate.h" @implementation NetWorkToGuiDelegate @synthesize data; @synthesize caller; - (id) init: (SEL) pointer :(NSObject *) c; { doWhenDone = pointer; self.caller = c; data = [[NSMutableData alloc]init]; return self; } - (void)connectionDidFinishLoading:(NSURLConnection *)connection { NSString *responseText = [[NSString alloc] initWithData:self.data encoding:NSUTF8StringEncoding]; NSLog(@"%@",responseText); } - (void)connectionDidFinishDownloading:(NSURLConnection *)connection destinationURL:(NSURL *)destinationURL { NSLog(@"post download finished"); data = [NSData dataWithContentsOfURL:destinationURL]; NSLog(@"data: %@",data); NSLog(@"URLconnection %@", connection.currentRequest); #pragma clang diagnostic push #pragma clang diagnostic ignored "-Warc-performSelector-leaks" [caller performSelector:doWhenDone withObject:data]; #pragma clang diagnostic pop } - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { [self.data setLength:0]; NSHTTPURLResponse *resp= (NSHTTPURLResponsae *) response; NSLog(@"got responce with status %d",[resp statusCode]); } - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)d { NSLog(@"data recieved %@",d); [self.data appendData:d]; } - (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { [[[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Error", @"") message:[error localizedDescription] delegate:nil cancelButtonTitle:NSLocalizedString(@"OK", @"") otherButtonTitles:nil] show]; NSLog(@"failed"); } // Handle basic authentication challenge if needed - (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge { NSString *username = @"username"; NSString *password = @"password"; NSURLCredential *credential = [NSURLCredential credentialWithUser:username password:password persistence:NSURLCredentialPersistenceForSession]; [[challenge sender] useCredential:credential forAuthenticationChallenge:challenge]; } @end </code></pre> <p>the call</p> <pre><code>NetWorkToGuiDelegate *nwgd = [[NetWorkToGuiDelegate alloc] init:@selector(login:) :self]; NSString *stringURL = [NSString stringWithFormat:@"%@%@%@%@", dk.baseURL, @"menu?code=",dk.loginCode,@"&amp;v=1"]; NSURL *url = [NSURL URLWithString:stringURL]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; NSURLConnection *urlConnection = [[NSURLConnection alloc] initWithRequest:request delegate:nwgd]; [urlConnection start]; </code></pre> <p>I'll just add that the call happens on the main thread</p>
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