XML data parsing in xcode and storing it - ios

Question

i have a XML file which have 5 items(each have title and url) in it i want retrieve all of them in xcode using xml parsing and then want to store all the entries in arrays so i can use them in application. let me show you all my code.
XML File
<data>
<item>
<title>Eggs</title>
<link>
http://URL/ios/category.php?cat_id=14
</link>
</item>
<item>
<title>Bakery</title>
<link>
http://URL/ios/category.php?cat_id=15
</link>
</item>
<item>
<title>Bread</title>
<link>
http://URL/ios/category.php?cat_id=16
</link>
</item>
<item>
<title>Cakes, Pies Patisserie</title>
<link>
http://URL/ios/category.php?cat_id=17
</link>
</item>
<item>
<title>Specialty Breads</title>
<link>
http://URL/ios/category.php?cat_id=119
</link>
</item>
</data>
Here is my header file
#import "XMLStringFile.h"
#interface MyViewController : UIViewController<NSXMLParserDelegate>{
NSMutableArray *rssOutputData;
NSMutableString *nodecontent;
NSXMLParser *xmlParserObject;
XMLStringFile *xmlStringFileObject;
}
now in xcode here is my viewdidload code
rssOutputData = [[NSMutableArray alloc]init];
NSData *xmlData=[[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:#"http://URL/mycategories.xml"]];
xmlParserObject =[[NSXMLParser alloc]initWithData:xmlData];
[xmlParserObject setDelegate:self];
[xmlParserObject parse];
here is all the parsing methods
#pragma mark NSXMLParser delegate
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict
{
if([elementName isEqualToString:#"item"]){
xmlStringFileObject =[[XMLStringFile alloc]init];
} else {
nodecontent = [[NSMutableString alloc] init];
}
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
[nodecontent appendString:[string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]];
NSLog(#"node content = %#",nodecontent);
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
if([elementName isEqualToString:#"item"]){
[rssOutputData addObject:xmlStringFileObject];
xmlStringFileObject = nil;
} else if([elementName isEqualToString:#"title"]){
xmlStringFileObject.xmltitle= nodecontent;
nodecontent = nil;
}
else if([elementName isEqualToString:#"link"]){
xmlStringFileObject.xmllink= nodecontent;
nodecontent = nil;
}
}
Here is XMLStringFile.h and XMLStringFile.m
XMLStringFile.h
#import <Foundation/Foundation.h>
#interface XMLStringFile : NSObject {
NSString *xmllink,*xmltitle;
}
#property(nonatomic,retain)NSString *xmllink,*xmltitle;
#end
And XMLStringFile.m file
#import "XMLStringFile.h"
#implementation XMLStringFile
#synthesize xmllink,xmltitle;
-(void)dealloc
{
}
Now i want to store my both entries in two separate arrays titles and links and then i want to retrieve them from those arrays in future. I need help please do let me know how can i do this. for now xmltitle and xmllink storing retrieved data but is only nslog last entire if i use it in another function.

Answer 1

Download XMLReader
In ViewDidLoad method.
- (void)viewDidLoad {
NSData *xmlData=[[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:#"http://cms.proxiclients.com/choithrams/mycategories.xml"]];
NSString *XMLString = [[NSString alloc]initWithData:xmlData encoding:NSUTF8StringEncoding];
XMLString = [XMLString stringByReplacingOccurrencesOfString:#"\n" withString:#""];
NSDictionary *dict = [XMLReader dictionaryForXMLString:XMLString error:nil];
NSLog(#"== %#",dict);
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
you can get dictionary value as below.
NSString *linkText = [[[[dict valueForKey:#"data"] valueForKey:#"item"] valueForKey:#"link"] valueForKey:#"text"];
linkText = [linkText stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
Your Output is Dictionary: