Send parameters to web service - ios

Question

I have written a function to get a response from web service. But now I want to send parameters to a web service. How can I modify the code below to send parameters to another web service? I want to work with the below code, I am new to IOS and dont want to mess up since I have a working code.
- (IBAction)buttonClick:(id)sender {
recordResults = FALSE;
NSString *soapMessage = [NSString stringWithFormat:
#"<?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"
"<GetUserList xmlns=\"http://methodoor.com/checkupservice/\" />\n"
"</soap:Body>\n"
"</soap:Envelope>\n"];
//NSLog(soapMessage);
_lbl_result.text = soapMessage;
NSURL *url = [NSURL URLWithString:#"http://servicing2.rotanet.com.tr/service.asmx"];
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://methodoor.com/checkupservice/GetUserList" forHTTPHeaderField:#"SOAPAction"];
[theRequest addValue: msgLength forHTTPHeaderField:#"Content-Length"];
[theRequest setHTTPMethod:#"POST"];
[theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];
NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
if( theConnection )
{
webData = [[NSMutableData data] retain];
}
else
{
NSLog(#"theConnection is NULL");
}
//[nameInput resignFirstResponder];
}

Answer 1

I see you are accessing SOAP web services. And you are already sending data in to your web service in SOAP message.
As this is a SOAP API, you only need to change the SOAP Action [theRequest addValue: #"http://methodoor.com/checkupservice/GetUserList" forHTTPHeaderField:#"SOAPAction"]; and SOAP message, which you can get from the WSDL or SVC file, to access another method of your web service.
For more info you can have a look at this link. Hope this helps.