xml parser delegates not working - ios

Question

Iam new to ios development, i need to parse xml data into an array, i tried a tutorial, and i am not getting data, when edited with "hrms.atrity.info/api/people"
XML url ,Parser delegates not working while executing with the above link.Here is my coding, it works with "image.apple.com/main/rss/hotnews/hotnews.rss".How to rectify this probe,
- (void)viewDidLoad
{
[super viewDidLoad];
feeds = [[NSMutableArray alloc] init];
NSURL *url = [NSURL URLWithString:#"http://hrms.atrity.info/api/people"];//NOt Working
NSURL *url = [NSURL
URLWithString:#"http://image.apple.com/main/rss/hotnews/hotnews.rss"];//This Works
xmlParser = [[NSXMLParser alloc] initWithContentsOfURL:url];
[xmlParser setDelegate:self];
[xmlParser setShouldResolveExternalEntities:NO];
[xmlParser parse];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table View
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:
(NSInteger)section
{
return feeds.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:
(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"Cell"
forIndexPath:indexPath];
cell.textLabel.text = [[feeds objectAtIndex:indexPath.row] objectForKey: #"FirstName"];
return cell;
}
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName
namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:
(NSDictionary *)attributeDict
{
element = elementName;
if ([element isEqualToString:#"Users"])
{
item = [[NSMutableDictionary alloc] init];
title = [[NSMutableString alloc] init];
link = [[NSMutableString alloc] init];
}
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName
namespaceURI:
(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
if ([elementName isEqualToString:#"Users"])
{
[item setObject:title forKey:#"FirstName"];
[item setObject:link forKey:#"LastName"];
[feeds addObject:[item copy]];
NSLog(#"%#",feeds);
}
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
if ([element isEqualToString:#"FirstName"])
{
[title appendString:string];
}
else if ([element isEqualToString:#"LastName"])
{
[link appendString:string];
}
}
- (void)parserDidEndDocument:(NSXMLParser *)parser
{
[self.tableView reloadData];
}
Thanks in Advance.

Answer 1

Using the following code:
xmlParser = [[NSXMLParser alloc] initWithContentsOfURL:[NSURL URLWithString:#"http://hrms.atrity.info/api/people"]];
is resulting in the parser:parseErrorOccurred: being called for the http://hrms.atrity.info/api/people URL. The NSError passed to that delegate shows an error code of 4 which translate to NSXMLParserEmptyDocumentError. This is because the URL is returning JSON instead of XML. You can check this using the following code:
NSError *error;
NSString *data = [[NSString alloc] initWithContentsOfURL:[NSURL URLWithString:#"http://hrms.atrity.info/api/people"] encoding:NSUTF8StringEncoding error:&error];
NSLog(#"%#", data);
You can clearly see in the console in Xcode that the data is JSON. In order to retrieve the data in XML format, you need to specify the Accept header with a value of application/xml. You cannot do this with NSURL alone and will need to use NSMutableURLRequest so that you can set the custom header value, as follows:
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:#"http://hrms.atrity.info/api/people"]];
[request setValue:#"application/xml" forHTTPHeaderField:#"Accept"];
NSURLResponse *response;
NSError *error;
NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
xmlParser = [[NSXMLParser alloc] initWithData:data];