iOS/iPhone XML Parser / XML Feed from URL (NSXMLParser ,Objective-C)

    NSURL *xmlURL = [NSURL URLWithString:@"https://www.thaicreate.com/url/getGalleryXML.php"];
    xmlParser = [[NSXMLParser alloc] initWithContentsOfURL:xmlURL];
    [xmlParser setDelegate: self];
    [xmlParser parse];

// เมื่อเริ่มทำการ Parser
– parserDidStartDocument:

// เจอ Tag เปิดของ Element
– parser:didStartElement:namespaceURI:qualifiedName:attributes:

// เจอ String ใน Element ปัจจุบัน
– parser:foundCharacters:

// เจอ Tag ปิดของ Element
– parser:didEndElement:namespaceURI:qualifiedName:

// เมื่อเกิด Error
– parser:parseErrorOccurred:

// เมื่อทำการ Parser เสร็จสิ้น
– parserDidEndDocument:

//
//  ViewController.h
//  tableViewXMLParser
//
//  Created by Weerachai on 12/8/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController<UITableViewDataSource,UITableViewDelegate,NSXMLParserDelegate>

@property (retain, nonatomic) IBOutlet UITableView *myTable;

@end

//
//  ViewController.m
//  tableViewXMLParser
//
//  Created by Weerachai on 12/8/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()
{
    NSMutableArray *myObject;
    
    // A dictionary object
    NSMutableDictionary *dict;
    
    // Define keys
    NSString *galleryid;
    NSString *name;
    NSString *titlename;
    NSString *thumbnail;
    
    // Current Element
    NSString *currentElement;
    
    
    // Temp Variable
    NSMutableString *currentGalleryID, *currentName, *currentTitleName, *currentThumbnail;
    
    NSXMLParser *xmlParser;
}

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
    
    // Define keys
    galleryid = @"GalleryID";
    name = @"Name";
    titlename = @"TitleName";
    thumbnail = @"Thumbnail";
    
    // Create array to hold dictionaries
    myObject = [[NSMutableArray alloc] init];
    
    NSURL *xmlURL = [NSURL URLWithString:@"https://www.thaicreate.com/url/getGalleryXML.php"];
    xmlParser = [[NSXMLParser alloc] initWithContentsOfURL:xmlURL];
    [xmlParser setDelegate: self];
    [xmlParser parse];
    
}

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{
    
    currentElement = [elementName copy];
    
    if([elementName isEqualToString: @"image"]){
        dict = [[NSMutableDictionary alloc] init];
        currentGalleryID = [[NSMutableString alloc] init];
        currentName = [[NSMutableString alloc] init];
        currentTitleName = [[NSMutableString alloc] init];
        currentThumbnail = [[NSMutableString alloc] init];
    }
}

- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
    
    /*
    if([currentElement isEqualToString: @"GalleryID"]){
        [currentGalleryID appendString: string];
    }else if([currentElement isEqualToString: @"Name"]){
        [currentName appendString: string];
    }else if([currentElement isEqualToString: @"TitleName"]){
        [currentTitleName appendString: string];
    }else if([currentElement isEqualToString: @"Thumbnail"]){
        [currentThumbnail appendString: string];
    }
     */
    
    if(![[string stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]] isEqualToString: @""]){
        
         if([currentElement isEqualToString: galleryid]){
             [currentGalleryID appendString: string];
         }else if([currentElement isEqualToString: name]){
             [currentName appendString: string];
         }else if([currentElement isEqualToString: titlename]){
             [currentTitleName appendString: string];
         }else if([currentElement isEqualToString: thumbnail]){
             [currentThumbnail appendString: string];
         }
    }
}

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{
    
    /*
    if([elementName isEqualToString: @""GalleryID]){
        [dict setObject: currentGalleryID forKey: @"GalleryID"];
    }else if([elementName isEqualToString: @"Name"]){
        [dict setObject: currentName forKey: @"Name"];
    }else if([elementName isEqualToString: @"TitleName"]){
        [dict setObject: currentTitleName forKey : @"TitleName"];
    }else if([elementName isEqualToString: @"Thumbnail"]){
        [dict setObject: currentThumbnail forKey: @"Thumbnail"];
    }else if([elementName isEqualToString: @"image"]){
        [myObject addObject: dict];
    }
     */
        
    if([elementName isEqualToString: galleryid]){
        [dict setObject: currentGalleryID forKey: galleryid];
    }else if([elementName isEqualToString: name]){
        [dict setObject: currentName forKey: name];
    }else if([elementName isEqualToString: titlename]){
        [dict setObject: currentTitleName forKey: titlename];
    }else if([elementName isEqualToString: thumbnail]){
        [dict setObject: currentThumbnail forKey: thumbnail];
        
    // Add Object 
    }else if([elementName isEqualToString: @"image"]){
        [myObject addObject: dict];
    }
}

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

    NSLog(@"Gallery list array has %d items", [myObject count]);
    NSMutableDictionary *gallery;
    for(int i = 0; i < [myObject count]; i ++){
        gallery = [myObject objectAtIndex: i];
        NSLog(@"\nGalleryID: %@\nName: %@\nTitleName: %@\nThumbnail: %@\n\n",
              [gallery objectForKey: galleryid],
              [gallery objectForKey: name],
              [gallery objectForKey: titlename],
              [gallery objectForKey: thumbnail]);
    }
    
    // Reload Data
    [_myTable reloadData];
}

// delegate for TableView

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return myObject.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    
    static NSString *CellIdentifier = @"Cell";
    
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        // Use the default cell style.
        cell = [[[UITableViewCell alloc] initWithStyle : UITableViewCellStyleSubtitle
                                       reuseIdentifier : CellIdentifier] autorelease];
    }
    
    
    NSDictionary *tmpDict = [myObject objectAtIndex:indexPath.row];
    
    NSURL *url = [NSURL URLWithString:[tmpDict objectForKey:thumbnail]];
    NSData *data = [NSData dataWithContentsOfURL:url];
    UIImage *img = [[UIImage alloc] initWithData:data];
    cell.imageView.image = img;
    
    cell.textLabel.text = [tmpDict objectForKey:name];
    cell.detailTextLabel.text= [tmpDict objectForKey:titlename];
    
    //[tmpDict objectForKey:galleryid]
    //[tmpDict objectForKey:name]
    //[tmpDict objectForKey:titlename]
    //[tmpDict objectForKey:thumbnail]
    
    return cell;
}


- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)dealloc {
    [_myTable release];
    [super dealloc];
}
@end