XML Parsing in Cocoa Touch/iPhone

Question

Okay i have seen TouchXML, parseXML, NSXMLDocument, NSXMLParser but i am really confused with what to to do.

I have an iphone app which connects to a servers, reques

Answer 1

providing you one simple example of parsing XML in Table, Hope it would help you.

//XMLViewController.h

#import 
@interface TestXMLViewController : UIViewController{
@private
NSXMLParser *xmlParser;
NSInteger depth;
NSMutableString *currentName;
NSString *currentElement;
NSMutableArray *data;
}
@property (nonatomic, strong) IBOutlet UITableView *tableView;
-(void)start;
@end

//TestXMLViewController.m

#import "TestXmlDetail.h"
#import "TestXMLViewController.h"
@interface TestXMLViewController ()
- (void)showCurrentDepth;

@end

@implementation TestXMLViewController

@synthesize tableView;
- (void)start
{
NSString *xml = @"Mainfirst rowsecond rowthird row";
xmlParser = [[NSXMLParser alloc] initWithData:[xml dataUsingEncoding:NSUTF8StringEncoding]];
[xmlParser setDelegate:self];
[xmlParser setShouldProcessNamespaces:NO];
[xmlParser setShouldReportNamespacePrefixes:NO];
[xmlParser setShouldResolveExternalEntities:NO];
[xmlParser parse];

}


- (void)parserDidStartDocument:(NSXMLParser *)parser 
{
NSLog(@"Document started");
depth = 0;
currentElement = nil;
}

- (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError 
{
NSLog(@"Error: %@", [parseError localizedDescription]);
}

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

currentElement = [elementName copy];

if ([currentElement isEqualToString:@"Node"])
{
    ++depth;
    [self showCurrentDepth];
}
else if ([currentElement isEqualToString:@"name"])
{

    currentName = [[NSMutableString alloc] init];
}
}

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

if ([elementName isEqualToString:@"Node"]) 
{
    --depth;
    [self showCurrentDepth];
}
else if ([elementName isEqualToString:@"name"])
{
    if (depth == 1)
    {
        NSLog(@"Outer name tag: %@", currentName);
    }
    else 
    {
        NSLog(@"Inner name tag: %@", currentName);
      [data addObject:currentName];
    }
    }
   }        

- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
if ([currentElement isEqualToString:@"name"]) 
{
    [currentName appendString:string];
} 
}

- (void)parserDidEndDocument:(NSXMLParser *)parser 
{
    NSLog(@"Document finished", nil);
}



- (void)showCurrentDepth
{
  NSLog(@"Current depth: %d", depth);
}


- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
 data = [[NSMutableArray alloc]init ];
[self start];
self.title=@"XML parsing";
NSLog(@"string is %@",data);
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
`enter code here`return [data count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = @"Cell";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];

if (cell == nil) {
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}
cell.textLabel.text = [data objectAtIndex:indexPath.row];
return cell;
}
@end