XML parsing iPhone

Question

Hi Guys, I am having this string:

 [?xml version="1.0" encoding="UTF-8"?]
    SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="urn:methods" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ns2="urn:PingdomAPI" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"][SOAP-ENV:Body][ns1:createAccountResponse][return xsi:type="ns2:CreateAccountResponse"][status xsi:type="xsd:int"]3[/status][password xsi:nil="true"/][/return][/ns1:createAccountResponse][/SOAP-ENV:Body][/SOAP-ENV:Envelope]

Just imagine that [ => < and ] => > The question is: How to extract int value of 3, the value for status. Thx in advance, Mladen

Answer 1

Why the []s instead of <>s > Is it a formatting issue?

Anyway, you'll need to use NSXMLParser (or a third party solution). See this blog post of mine for some more info and a useful wrapper.

Answer 2

These examples are taken from Apple's event driven XML programming guide.

Creating and initializing a NSXMLParser instance:

BOOL success;
NSURL *xmlURL = [NSURL fileURLWithPath:pathToFile];
if (addressParser) // addressParser is an NSXMLParser instance variable
    [addressParser release];
addressParser = [[NSXMLParser alloc] initWithContentsOfURL:xmlURL];
[addressParser setDelegate:self];
[addressParser setShouldResolveExternalEntities:YES];
success = [addressParser parse]; // return value not used
            // if not successful, delegate is informed of error

Implement the delegation methods that are of interest to you.

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict

For a full list of delegate methods see NSXMLParser Class Reference.

Answer 3

Here where I am at the moment. I want to extract from that string values for keys "status" and "password".

Here is my code:

BOOL success;

NSXMLParser *addressParser = [[NSXMLParser alloc] initWithData:respData];
[addressParser setDelegate:self];
[addressParser setShouldResolveExternalEntities:YES];
success = [addressParser parse];

and the methods

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName

namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict { if ( [elementName isEqualToString:@"status"]) { } if ( [elementName isEqualToString:@"password"]) { } }

and

- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
NSLog(@"string: %@", string);

}

The last log prints out desired values for "status" and "password", I just don't know how to assign them to some variable.