Parsing XML with AFNetworking

Question

I am fairly new with iOS and is trying to do a REST request and fetch some XML data, parse that and ideally put into a custom Object. But for now I am stuck with the getting XML data. I found this code snippet on Github/AFNetworking.. ``` - (void) fetchInterestData{ AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager]; manager.responseSerializer = [AFXMLResponseSerializer new]; NSDictionary *parameters = @{@"foo": @"bar"}; [manager POST:@"http://www.raywenderlich.com/downloads/weather_sample/weather.php?format=json" parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) { NSLog(@"JSON: %@", responseObject); } failure:^(AFHTTPRequestOperation *operation, NSError *error) { NSLog(@"Error: %@", error); }]; } ``` It works and fetches a JSON object. But I want to get the XML.. If I use http://www.raywenderlich.com/downloads/weather_sample/weather.php?format=xml instead there is an xml object. But now the code breaks down completely.…

Accepted Answer

Based on your updated code, you need to add a response serializer, and you also need to translate the NSData properly:

```
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
AFHTTPRequestSerializer * requestSerializer = [AFHTTPRequestSerializer serializer];
AFHTTPResponseSerializer * responseSerializer = [AFHTTPResponseSerializer serializer];

NSString *ua = @"Mozilla/5.0 (iPhone; CPU iPhone OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A5376e Safari/8536.25";
[requestSerializer setValue:ua forHTTPHeaderField:@"User-Agent"];
//    [requestSerializer setValue:@"application/xml" forHTTPHeaderField:@"Content-type"];
responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/xml", nil];
manager.responseSerializer = responseSerializer;
manager.requestSerializer = requestSerializer;

NSDictionary *parameters = @{@"foo": @"bar"};

[manager POST:@"http://smartkalkyl.se/rateapp.aspx?user=xxxxx&pass=xxxxxx"
   parameters:parameters
      success:^(AFHTTPRequestOperation *operation, id responseObject) {
          NSData * data = (NSData *)responseObject;
          self.fetchedXML = [NSString stringWithCString:[data bytes] encoding:NSISOLatin1StringEncoding];
          NSLog(@"Response string: %@", self.fetchedXML);
      }
      failure:^(AFHTTPRequestOperation *operation, NSError *error) {
          NSLog(@"Error: %@", error);
      }];
```

Your response is coming back as text/xml, and the default response serializer needs to be set to accept that.

The data isn't coming back as UTF8 but ascii, so we need to set that appropriately as well.

I gave it a shot in the simulator and it's working on my end.

edit: seems the data is in ISO latin-1 format. my bad.

Parsing XML with AFNetworking

Solution

Problem