Yazar Bozar

NSString *soapMessage = @"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
			"<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">\n"
			"<soap:Body >\n"
			"<CelsiusToFahrenheit xmlns=\"http://tempuri.org/\">\n"
			"<Celsius>25</Celsius>\n"
			"</CelsiusToFahrenheit>\n"
			"</soap:Body>\n"
			"</soap:Envelope>\n";

	NSURL *url = [NSURL URLWithString:@"http://www.w3schools.com/webservices/tempconvert.asmx?op=CelsiusToFahrenheit"];
 
	NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
	NSString *msgLength = [NSString stringWithFormat:@"%d", [soapMessage length]];
 
	[theRequest addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
	[theRequest addValue: @"http://tempuri.org/CelsiusToFahrenheit" forHTTPHeaderField:@"SOAPAction"];
	[theRequest addValue: msgLength forHTTPHeaderField:@"Content-Length"];
	[theRequest setHTTPMethod:@"POST"];
	[theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];
 
	NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];

// Bağlantı kurulabiliyor mu?
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
	[webData setLength: 0];
}
// Dönen datayı alabileceğimiz method.
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
	[webData appendData:data];
}
// Bağlantıda herhangi bir hata olursa çalışacak method.
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
	NSLog(@"ERROR with theConnection");
	[connection release];
	[webData release];
}
// Bağlantı cevabı döndüğünde çalışan method. XML parse işlemini burada gerçekleştiriyoruz.
-(void)connectionDidFinishLoading:(NSURLConnection *)connection {
	NSLog(@"DONE. Received Bytes: %d", [webData length]);
	NSString *theXML = [[NSString alloc] initWithBytes: [webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding];
	NSLog(theXML);
	[theXML release];
 
	if( xmlParser )
	{
		[xmlParser release];
	}
 
	xmlParser = [[NSXMLParser alloc] initWithData: webData];
	[xmlParser setDelegate: self];
	[xmlParser setShouldResolveExternalEntities: YES];
	[xmlParser parse];
 
	[connection release];
	[webData release];
}

// XML Element başlangıcı.
-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *) namespaceURI qualifiedName:(NSString *)qName
attributes: (NSDictionary *)attributeDict
{
	if( [elementName isEqualToString:@"CelsiusToFahrenheitResult"])
	{
		if(!results)
		{
			results = [[NSMutableString alloc] init];
		}
		recordResults = TRUE;
	}
}
// Elementin içinde yazılı değer aldığımız method.
-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
	if( recordResults )
	{
		[results appendString: string];
	}
}
// XML içinde .... ile Element bittiğinde aldığımız değeri ekranda bir component(Label, TextField vb.) içinde
// gösteriyoruz.
-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
	if( [elementName isEqualToString:@"CelsiusToFahrenheitResult"])
	{
		recordResults = FALSE;
		myLabel.text = results;
		[results release];
		results = nil;
	}
}