xml parsing run but no data displayed
===

 This is the code of my app . The applications runs but there is no data displayed , can you help me to fix this problem ?    
   @interface MyData : NSObject <NSXMLParserDelegate> {
    
    	NSMutableString *currentElementValue;
    	User *user;
    	NSMutableArray *users;
    }
    
    -(MyData *) initXMLParser;
    -(BOOL)parseDocumentWithData:(NSData *)data; 
    
    @property (nonatomic, retain) User *user;
    @property (nonatomic, retain) NSMutableArray *users;
    
    
    
    
    
    @implementation MyData
    @synthesize user;
    @synthesize users;
    
    
    - (MyData *) initXMLParser {
    	[super init];
    	// init array of user objects 
    	users = [[NSMutableArray alloc] init];
    	return self;
    }
    
    -(BOOL)parseDocumentWithData:(NSData *)data {
        NSString * filePath = [[NSBundle mainBundle] pathForResource:@"Users" ofType:@"xml"];
    	data = [NSData dataWithContentsOfFile:filePath];
    	
    	if (data == nil)
            return NO;
        
        // this is the parsing machine
        NSXMLParser *xmlparser = [[NSXMLParser alloc] initWithData:data];
        
        // this class will handle the events
        [xmlparser setDelegate:self];
        [xmlparser setShouldResolveExternalEntities:NO];
    	
        // now parse the document
        BOOL ok = [xmlparser parse];
        if (ok == NO)
            NSLog(@"error");
        else
            NSLog(@"OK");
        
        [xmlparser release];
        return ok;
    }
    
    - (void)parser:(NSXMLParser *)parser 
    didStartElement:(NSString *)elementName 
      namespaceURI:(NSString *)namespaceURI 
     qualifiedName:(NSString *)qualifiedName 
    	attributes:(NSDictionary *)attributeDict {
    	
    	if ([elementName isEqualToString:@"user"]) {
    		NSLog(@"user element found – create a new instance of User class...");
    		user = [[User alloc] init];
    		
    	}
    }
    
    - (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
    	if (!currentElementValue) {
    		// init the ad hoc string with the value     
    		currentElementValue = [[NSMutableString alloc] initWithString:string];
    	} else {
    		// append value to the ad hoc string    
    		[currentElementValue appendString:string];
    	}
    	NSLog(@"Processing value for : %@", string);
    }  
    
    - (void)parser:(NSXMLParser *)parser 
     didEndElement:(NSString *)elementName
      namespaceURI:(NSString *)namespaceURI 
     qualifiedName:(NSString *)qName {
    	
    	if ([elementName isEqualToString:@"users"]) {
    		// We reached the end of the XML document
    		return;
    	}
    	
    	if ([elementName isEqualToString:@"user"]) {
    		
    		// object to our user array
    		[users addObject:user];
    		// release user object
    		[user release];
    		user = nil;
    	} else {
    		
    		[user setValue:currentElementValue forKey:elementName];
    	}
    	
    	[currentElementValue release];
    	currentElementValue = nil;
    }
    
    @end
    
    /* This is the code of my app . The applications runs but there is no data displayed , can you help me to fix this problem ? */


This is the code of my app . The application runs but there is no data displayed , can you help me to fix this problem ? I want to display data when parsing 