Question

i have an XML file as url where the file contains like this,

<Products>
<products id="1">
<name>product1</name>
<price>$150</price>
<img>http://www.myimage.com/Main_pic.png</img>
</products>
</Products>

Now using NSXMLParser i can retrieve the data and the image but after i get those data am not understanding how to store in NSMutableArray or NSDictionary. Also i tried to implement lazyloading asynchronous image download from Lazy Loading Table Images Asynchronous Downloading from Apple. But i failed to load the images. Do we have any alternative for aynchronous loading.

Kindly describe me in detail about,

1. how to store a data retieved from url XML file in aysnchronous downloading.
2. how to separate data and image.
3. how to implement those in UIImage and data to view in iPhone.

EDITED

for better understanding i need the data and the image like below picture and not in the table view.

EDITED-2
By using the lazyloading parsing i modified according to my content here the code for your reference,

- (void)main{
self.workingArray = [NSMutableArray array];
self.workingPropertyString = [NSMutableString string];
NSXMLParser *parser = [[NSXMLParser alloc] initWithData:dataToParse];
[parser setDelegate:self];
[parser parse];
if (![self isCancelled]){
self.completionHandler(self.workingArray);}
self.workingArray = nil;
self.workingPropertyString = nil;
self.dataToParse = nil;}

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{
if ([elementName isEqualToString:@"Products"]){
self.workingEntry = [[egsLists alloc] init];}
storingCharacterData = [elementsToParse containsObject:elementName];}

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{
if (self.workingEntry){
if (storingCharacterData){
NSString *trimmedString = [workingPropertyString stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
[workingPropertyString setString:@""];
if ([elementName isEqualToString:sIDStr]){
self.workingEntry.ProductID = trimmedString;}
else if ([elementName isEqualToString:sImageStr]){
self.workingEntry.img = trimmedString;}}
else if ([elementName isEqualToString:@"Products"]){
[self.workingArray addObject:self.workingEntry];
self.workingEntry = nil;}}}


- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
if (storingCharacterData){
[workingPropertyString appendString:string];}}

Answer 1

take a NSObject Class say DataClass

// create objects for your data in DataClass.h And Synthesize them in DataClass.m

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName 
  namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {

DataClass *mydata=[[DataClass alloc]init];

if ([elementName isEqualToString:@"id"]) 
    {
mydata.idvalue=[currentNodeContent stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
}
if ([elementName isEqualToString:@"name"]) 
    {
mydata.namevalue=[currentNodeContent stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
}
if ([elementName isEqualToString:@"price"]) 
    {
mydata.pricevalue=[currentNodeContent stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
}
if ([elementName isEqualToString:@"img"]) 
    {
mydata.imgLink=[currentNodeContent stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
}


[myArray addObject:mydata];



}

After That When You Need you can Retrive the Data From Array if you are Using TableView

then in your CellForRowAtindexPath method use the following:

DataClass *mydata=[[DataClass alloc]init];
mydata=[myarray objectAtindex:indexPath.row];

cell.textlabel.text=mydata.nameValue;
cell.imageView.image=[UIImage imageWithData: [NSData dataWithContentsOfURL: [NSURL URLWithString:mydata.imglink]]];

You can Use LazyTableImages SampleCode from Apple for Loading Images.

http://developer.apple.com/library/ios/#samplecode/LazyTableImages/Introduction/Intro.html

For Complete XML parsing See the Tutorial or use Below Code:

Source : http://www.theappcodeblog.com/2011/05/09/parsing-xml-in-an-iphone-app-tutorial/

   NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://opentestdrive.com/Products.xml"]];

        // Perform request and get JSON as a NSData object


        NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];


        NSString *responseString = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding] ;


        NSLog(@"responseString=%@", responseString);

        NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];

        [request setURL:[NSURL URLWithString:url]];
        [request setHTTPMethod:@"GET"];

        NSURLConnection *conn=[[NSURLConnection alloc] initWithRequest:request delegate:self];
        if (conn)
        {
            receivedData = [[NSMutableData data] retain];
        }
        else
        {
        }



- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
    [receivedData setLength:0];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
    [receivedData appendData:data];
}


- (void) parser:(NSXMLParser *)parser didStartElement:(NSString *)elementname namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
    if ([elementname isEqualToString:@"imgName"]) 
    {
        //if you Taking any NSObject Class then Alloc init here.
    }
}

- (void) parser:(NSXMLParser *)parser didEndElement:(NSString *)elementname namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
    if ([elementname isEqualToString:@"name"]) 
    {
        namelable.text=currentNodeContent;
    }
    if ([elementname isEqualToString:@"price"]) 
    {
        pricelabel.text = currentNodeContent;
    }
    if ([elementname isEqualToString:@"imgName"]) 
    {
        imageView.image=[UIImage imageWithData: [NSData dataWithContentsOfURL: [NSURL URLWithString:currentNodeContent]]];
    }
}

- (void) parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
    currentNodeContent = (NSMutableString *) [string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
}