récupérer valeur dans balise xml avec NSxmlparser

Bonjour à  tous, j'ai un  petit soucis, j'aimerai récupérer ce qui se trouve dans une de mes balises, mais lors de la compilation, les balises sont bien ouvertes  et fermées, mais à  la fin la valeur est nul .

Je ne vois pas trop d'ou peu venir mon erreur.

mon code : etat.h

//  etat.h

//  xmltest

//

//  Created by frederic zimmermann on 24/03/2015.

//  Copyright (c) 2015 frederic zimmermann. All rights reserved.

//



#import <Foundation/Foundation.h>



@interface Etat : NSObject {





NSString * namePin;

NSString * etat;

NSString * temperature;

NSString * valeur;    }



@property (nonatomic, retain) NSString *namePin;

@property (nonatomic, retain) NSString *etat;

@property (nonatomic, retain) NSString *temperature;

@property (nonatomic, retain) NSString *valeur;





@end

etat.m

//  etat.m

//  xmltest

//

//  Created by frederic zimmermann on 24/03/2015.

//  Copyright (c) 2015 frederic zimmermann. All rights reserved.

//



#import "etat.h"



@implementation Etat

@synthesize  namePin,etat,temperature,valeur;



@end

XMLEtatParser.h

//  xmltest

//

//  Created by frederic zimmermann on 26/03/2015.

//  Copyright (c) 2015 frederic zimmermann. All rights reserved.

//



#import <Foundation/Foundation.h>



@interface XMLEtatParser : NSObject <NSXMLParserDelegate> {

NSString *className;

NSMutableArray *items;

NSObject *item;

NSString *currentNodeName;

NSMutableString *currentNodeContent;

}

- (NSArray *)items;

- (id)parseXMLAtURL:(NSURL *)url

toObject:(NSString *)aClassName

parseError:(NSError **)error;

@end

XMLEtatParser.m

//  XMLEtatParser.m

//  xmltest

//

//  Created by frederic zimmermann on 26/03/2015.

//  Copyright (c) 2015 frederic zimmermann. All rights reserved.

//



#import "XMLEtatParser.h"



@implementation XMLEtatParser





- (NSArray *)items

{

return items;

}



- (id)parseXMLAtURL:(NSURL *)url

toObject:(NSString *)aClassName

parseError:(NSError **)error

{



items = [[NSMutableArray alloc] init];

className = aClassName;

NSXMLParser *parser = [[NSXMLParser alloc] initWithContentsOfURL:url];

[parser setDelegate:self];

[parser parse];



if([parser parserError] && error) {

*error = [parser parserError];

}



return self;

}



- (void)parser:(NSXMLParser *)parser

didStartElement:(NSString *)elementName

namespaceURI:(NSString *)namespaceURI

qualifiedName:(NSString *)qName

attributes:(NSDictionary *)attributeDict

{





NSLog(@Ouvre balise: %@", elementName);

if([elementName isEqualToString:className]) {



item = [[NSClassFromString(className) alloc] init];



// create an instance of a class on run-time

}

else {

currentNodeName = [elementName copy];

currentNodeContent = [[NSMutableString alloc] init];

}



}



- (void)parser:(NSXMLParser *)parser

didEndElement:(NSString *)elementName

namespaceURI:(NSString *)namespaceURI

qualifiedName:(NSString *)qName

{

NSLog(@Ferme balise: %@", elementName);

if([elementName isEqualToString:className]) {

[items addObject:item];

item = nil;

}

else if([elementName isEqualToString:currentNodeName]) {

// use key-value coding



[item setValue:currentNodeContent forKey:elementName];

currentNodeContent = nil;





currentNodeName = nil;

}

}



- (void)parser:(NSXMLParser *)parser

foundCharacters:(NSString *)string

{

[currentNodeContent appendString:string];

}



@end

mon ViewController.h

//  ViewController.h

//  xmltest

//

//  Created by frederic zimmermann on 23/03/2015.

//  Copyright (c) 2015 frederic zimmermann. All rights reserved.

//



#import <UIKit/UIKit.h>



@interface ViewController : UIViewController<UITextFieldDelegate> {



IBOutlet UITextField *_contenue;

}



@property (weak, nonatomic) IBOutlet UITextField *contenue;

@property (weak, nonatomic) IBOutlet UILabel *label;



@end

mon ViewController.m

//  ViewController.m

//  xmltest

//

//  Created by frederic zimmermann on 23/03/2015.

//  Copyright (c) 2015 frederic zimmermann. All rights reserved.

//



#import "ViewController.h"

#import "XMLEtatParser.h"

#import "etat.h"



@interface ViewController ()



@end



@implementation ViewController

@synthesize contenue,label;



- (void)viewDidLoad {

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

}



- (void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}



- (IBAction)parse:(id)sender {





NSString *myURLString =[NSString stringWithFormat:@http:;//%@", contenue.text];

NSURL *url =[NSURL URLWithString:myURLString];



XMLEtatParser *myParser = [[XMLEtatParser alloc]

parseXMLAtURL:url toObject:@Etat parseError:nil];



for(int i = 0; i < [[myParser items] count]; i++) {

NSLog(@valeur: %@", [( Etat *)[[myParser items] objectAtIndex:i] namePin]);





}





}









@end

et voici ce que m'affiche mon NSLog :

2015-07-05 11:03:28.185 xmltest[2360:758832] Ouvre balise: agridomotique

2015-07-05 11:03:28.186 xmltest[2360:758832] Ouvre balise: Pin

2015-07-05 11:03:28.187 xmltest[2360:758832] Ouvre balise: p

2015-07-05 11:03:28.187 xmltest[2360:758832] Ouvre balise: namePin

2015-07-05 11:03:28.188 xmltest[2360:758832] Ferme balise: namePin

2015-07-05 11:03:28.188 xmltest[2360:758832] Ouvre balise: Etat

2015-07-05 11:03:28.189 xmltest[2360:758832] Ferme balise: Etat

2015-07-05 11:03:28.189 xmltest[2360:758832] Ferme balise: p

2015-07-05 11:03:28.190 xmltest[2360:758832] Ouvre balise: p

2015-07-05 11:03:28.190 xmltest[2360:758832] Ouvre balise: Temp

2015-07-05 11:03:28.191 xmltest[2360:758832] Ferme balise: Temp

2015-07-05 11:03:28.191 xmltest[2360:758832] Ouvre balise: valeur

2015-07-05 11:03:28.192 xmltest[2360:758832] Ferme balise: valeur

2015-07-05 11:03:28.192 xmltest[2360:758832] Ferme balise: p

2015-07-05 11:03:28.192 xmltest[2360:758832] Ouvre balise: Humid

2015-07-05 11:03:28.193 xmltest[2360:758832] Ferme balise: Humid

2015-07-05 11:03:28.193 xmltest[2360:758832] Ouvre balise: valeurh

2015-07-05 11:03:28.194 xmltest[2360:758832] Ferme balise: valeurh

2015-07-05 11:03:28.194 xmltest[2360:758832] Ferme balise: Pin

2015-07-05 11:03:28.195 xmltest[2360:758832] Ferme balise: agridomotique

2015-07-05 11:03:28.195 xmltest[2360:758832] valeur: (null)

Merci d'avance pour votre aide