He escrito un código, la mayoría de los cuales ha sido tomado de tutoriales, etc., pero no estoy seguro de que sea 100%. El código funciona, pero creo que es un poco largo y tiene pérdidas de memoria.

Entonces tres preguntas:

¿Se puede limpiar? ¿Más fácil de entender?¿Cómo puedo solucionar el 'if (indexPath.section == 1) theRow + = 6;' poco para ser dinámico?Pérdidas de memoria, ¿cómo puedo ordenar si necesitan ser ordenadas? (novato ...)

Cualquier comentario / punteros / ayuda más que bienvenida ...

#import "InfoViewController.h"
@implementation InfoViewController

- (void)parseXMLFileAtURL:(NSString *)URL {
    sections = [[NSMutableArray alloc] init];
    secItems = [[NSMutableArray alloc] init];

    //you must then convert the path to a proper NSURL or it won't work
    NSURL *xmlURL = [NSURL URLWithString:URL];
    rssParser = [[NSXMLParser alloc] initWithContentsOfURL:xmlURL];

    // Set self as the delegate of the parser so that it will receive the parser delegate methods callbacks.
    [rssParser setDelegate:self];

    // Depending on the XML document you're parsing, you may want to enable these features of NSXMLParser.
    [rssParser setShouldProcessNamespaces:NO];
    [rssParser setShouldReportNamespacePrefixes:NO];
    [rssParser setShouldResolveExternalEntities:NO];

    [rssParser parse];
}

- (void)parserDidStartDocument:(NSXMLParser *)parser {
    [activityIndicator startAnimating];
    [activityIndicator addSubview];
}

- (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError {
    NSString * errorString = [NSString stringWithFormat:@"Unable to download story feed from web site (Error code %i )", [parseError code]];
    NSLog(@"error parsing XML: %@", errorString);

    UIAlertView * errorAlert = [[UIAlertView alloc] initWithTitle:@"Error loading content" message:errorString delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
    [errorAlert show];
}

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{

    currentElement = [elementName copy];

    if ([elementName isEqualToString:@"title"]) {
        // clear out our story item caches...
        currentTitle = [[NSMutableString alloc] init];
    }

    if ([elementName isEqualToString:@"section"]) {
        //item = [[NSMutableDictionary alloc] init];
        item = [[NSMutableDictionary alloc] init];
        currentSection = [[NSMutableString alloc] init];
    }
}

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

    if ([elementName isEqualToString:@"section"]) {

        // save values to an item, then store that item into the array...
        [item setObject:currentSection forKey:@"name"];
        [item setObject:[NSNumber numberWithInt:itemsCount] forKey:@"itemsCount"];

        [sections addObject:[item copy]];

        itemsCount = 0;
    }

    if ([elementName isEqualToString:@"title"]) {

        // save values to an item, then store that item into the array...
        [item setObject:currentTitle forKey:@"title"];

        itemsCount = itemsCount + 1;
        [secItems addObject:[item copy]];
    }
}

- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
    // save the characters for the current item...
    if ([currentElement isEqualToString:@"name"]) {
        [currentSection appendString:string];
    } else if ([currentElement isEqualToString:@"title"]) {
        [currentTitle appendString:string];
    } else if ([currentElement isEqualToString:@"description"]) {
        [currentSummary appendString:string];
    } else if ([currentElement isEqualToString:@"pubDate"]) {
        [currentDate appendString:string];
    }
}

- (void)parserDidEndDocument:(NSXMLParser *)parser {

    [activityIndicator stopAnimating];
    [activityIndicator removeFromSuperview];

    [dataTable reloadData];
}

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];


    if ([sections count] == 0) {
        NSString * path = @"http://www.website.com/_dev/info.xml";
        [self parseXMLFileAtURL:path];
    }

}

#pragma mark -
#pragma mark Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    // Return the number of sections.
    return [sections count];
}

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
    return [[sections objectAtIndex: section] objectForKey: @"name"];
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return [[[sections objectAtIndex: section] objectForKey: @"itemsCount"] intValue];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {


    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];

    if(cell == nil){
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"cell"];
    }

    int theRow = indexPath.row;

    /*
     if(indexPath.section >= 1){
     int oldSection = indexPath.section - 1;
     int prevRows = prevRows + [[[sections objectAtIndex: oldSection] objectForKey: @"itemsCount"] intValue];
     theRow += prevRows;
     }
     */

    if (indexPath.section == 1) theRow += 6;
    if (indexPath.section == 2) theRow += 8;
    if (indexPath.section == 3) theRow += 14;
    if (indexPath.section == 4) theRow += 19;
    if (indexPath.section == 5) theRow += 22;
    if (indexPath.section == 6) theRow += 23;

    cell.textLabel.text = [[secItems objectAtIndex:theRow] objectForKey: @"title"];
    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
    return cell;
}

#pragma mark -
#pragma mark Table view delegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    // Navigation logic may go here. Create and push another view controller.
}


#pragma mark -
#pragma mark Memory management

- (void)didReceiveMemoryWarning {
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];

    // Relinquish ownership any cached data, images, etc that aren't in use.
}

- (void)viewDidUnload {
    // Relinquish ownership of anything that can be recreated in viewDidLoad or on demand.
    // For example: self.myOutlet = nil;
}


- (void)dealloc {
    [super dealloc];
    [currentElement release];
    [rssParser release];
    [sections release];
    [item release];
    [currentTitle release];
}


@end

El feed XML que estoy tratando de desglosar para secciones y elementos:

<?xml version="1.0" encoding="ISO-8859-1"?>
<data>
    <section>
        <name>Section 1</name>
        <item>
            <title>Title 1</title>
            <pubDate>1 Sept 2010</pubDate>
            <detail><![CDATA[Detail text]]></detail>
        </item>
        <item>
            <title>Title 2</title>
            <pubDate>1 Sept 2010</pubDate>
            <detail><![CDATA[<Detail text]]></detail>
        </item>
        <item>
            <title>Title 3</title>
            <pubDate>1 Sept 2010</pubDate>
            <detail><![CDATA[Detail text]]></detail>
        </item>
        <item>
            <title>Title 4</title>
            <pubDate>1 Sept 2010</pubDate>
            <detail><![CDATA[Detail text]]></detail>
        </item>
        <item>
            <title>Title 5</title>
            <pubDate>1 Sept 2010</pubDate>
            <detail><![CDATA[Detail text]]></detail>
        </item>
        <item>
            <title>Title 6</title>
            <pubDate>1 Sept 2010</pubDate>
            <detail><![CDATA[Detail text]]></detail>
        </item>
    </section>
    <section>
        <name>Section 2</name>
        <item>
            <title>Title 1</title>
            <pubDate>1 Sept 2010</pubDate>
            <detail><![CDATA[Detail text]]></detail>
        </item>
        <item>
            <title>Title 2</title>
            <pubDate>1 Sept 2010</pubDate>
            <detail><![CDATA[Detail text]]></detail>
        </item>
    </section>
</data>