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[iphonedev99]

I tried the Trilitech's code the following way but I couldn't get it run for me.

applicationDidFinishLaunching:

- (void)applicationDidFinishLaunching:(UIApplication *)application {    

	NSArray *keys = [NSArray arrayWithObjects:@"UserName", @"Password", nil];
	NSArray *objects = [NSArray arrayWithObjects:@"", @"", nil];
	NSDictionary *params = [NSDictionary dictionaryWithObjects:objects forKeys:keys];
	NSDictionary *wsResponse=[WebServices callRestService:@"GetGuid" :params];
	
	NSString *responseString=[wsResponse objectForKey:@"string"];

    [window makeKeyAndVisible];
}

WebServices.h

#import <UIKit/UIKit.h>


@interface WebServices : NSObject {

}

+(id)callRestService: (NSString *) methodName : (NSDictionary *) params;
+(NSURL *)getRestUrl: (NSString *) methodName : (NSDictionary *) params;

@end

WebServices.m

#import "WebServices.h"
#import "XmlParser.h"


@implementation WebServices

+(id)callRestService: (NSString *) methodName : (NSDictionary *) params
{
	NSURL *url=[WebServices getRestUrl: methodName : params];
	XmlParser *xmlParser = [[XmlParser alloc] init];
	
	NSXMLParser *parser = [[NSXMLParser alloc] initWithContentsOfURL:url];
	[parser setDelegate:xmlParser];
	[parser setShouldProcessNamespaces:NO];
	[parser setShouldReportNamespacePrefixes:NO];
	[parser setShouldResolveExternalEntities:NO];
	[parser parse];
	[parser release];
	return xmlParser.result;
}

+(NSURL *)getRestUrl: (NSString *) methodName : (NSDictionary *) params
{
	NSString *url=@"http://lpsol.com/ws/soap.asmx/";	
	url=[url stringByAppendingString:methodName];
	
	BOOL firstKey=TRUE;
	for (NSString *key in params)
	{
		NSString *value=[params objectForKey:key];
		if (firstKey) url=[url stringByAppendingString:@"?"]; else url=[url stringByAppendingString:@"&"];
		url=[url stringByAppendingString:key];
		url=[url stringByAppendingString:@"="];
		url=[url stringByAppendingString:value];
		firstKey=FALSE;
	}
	return [NSURL URLWithString:url];
}

XmlParser.h

#import <Foundation/Foundation.h>


@interface XmlParser : NSObject {
	NSMutableDictionary *result;
	NSString *currentElementName;
	NSString *currentElementValue;
	NSMutableArray *parentArray;
}

@property (nonatomic, retain) NSMutableDictionary *result;
@property (nonatomic, retain) NSString *currentElementName;
@property (nonatomic, retain) NSString *currentElementValue;
@property (nonatomic, retain) NSMutableArray *parentArray;


- (void)parserDidStartDocument:(NSXMLParser *)parser;
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict;
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName;
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string;

@end

XmlParser.m

#import "XmlParser.h"


@implementation XmlParser
@synthesize result;
@synthesize currentElementName;
@synthesize currentElementValue;
@synthesize parentArray;


- (void)parserDidStartDocument:(NSXMLParser *)parser
{
	result=[[NSMutableDictionary alloc] init];
	parentArray=[[NSMutableArray alloc] init];
	[parentArray addObject:result];
	currentElementName=@"";
}

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
	if (qName) {
		elementName = qName;
	}
	currentElementValue=@"";
	if (currentElementName!=@"")
	{
		id newParent=NULL;
		if ([currentElementName isLike:@"*Array*"])
		{
			newParent=[[NSMutableArray alloc] init];
		} else {
			newParent=[[NSMutableDictionary alloc] init];
		}
		[parentArray addObject:newParent];
	}
	currentElementName=elementName;
}

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{     
	if (qName) {
		elementName = qName;
	}
	
	if (currentElementName==@"")
	{
		//We're adding a container with children.  Add it to the parent and remove this item fromt he parentArray
		int currentIndex=[parentArray count]-1;
		int parentIndex=currentIndex - 1;
		id currentChild=[parentArray objectAtIndex:currentIndex];
		id currentParent=[parentArray objectAtIndex:parentIndex];
		
		if ([currentParent isKindOfClass:[NSMutableArray class]])
		{
			[currentParent addObject:currentChild];
		} else {
			[currentParent setObject:currentChild forKey:elementName];
		}
		
		[parentArray removeObjectAtIndex:currentIndex];
	} else {
		//We're adding a simple type element
		int currentIndex=[parentArray count]-1;
		id currentParent=[parentArray objectAtIndex:currentIndex];
		if ([currentParent isKindOfClass:[NSMutableArray class]])
		{
			[currentParent addObject:currentElementValue];
		} else {
			[currentParent setObject:currentElementValue forKey:currentElementName];
		}
	}
	currentElementName=@"";
}


- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
	currentElementValue=string;
}

@end

But for me the service doesn't seem to return anything. Can anyone favour me here?