Json serialize array in objective-c - iphone

Question

I want to serialize array to JSON.
Here is my JSON -
{
"User":{"Id":"1222","Email":"asdad#adasd.com"},
"Person":{"Name":"John","Surname":"Smith"}
}
values 1222, asdad#adasd.com, John, Smith are examples. this values will be define in controller.
I don't know how to handle serialize this arrays inside JSON.
I need to send objects - user and person to the server with different values, depending on the user. This is my model. Both are arrays.
Here is my code
Header
#import <Foundation/Foundation.h>
#import "BaseRequest.h"
#interface SaveUserProfileRequest : BaseRequest {
NSMutableArray *_user;
NSMutableArray *_person;
NSMutableArray *_address;
NSString *_userId;
NSString *_userEmail;
NSString *_userName;
NSString *_userSurname;
}
- (id)initWithUser:(NSMutableArray*)user andPerson:(NSMutableArray*)person andAddress:(NSMutableArray*)address andUserId:(NSString*)userId andUserEmail:(NSString*)userEmail andUserName:(NSString*)userName andUserSurname:(NSString*)userSurname;
#property (nonatomic, strong) NSMutableArray* user;
#property (nonatomic, strong) NSMutableArray* person;
#property (nonatomic, strong) NSMutableArray* address;
#property (nonatomic, strong) NSString* userId;
#property (nonatomic, strong) NSString* userEmail;
#property (nonatomic, strong) NSString* userName;
#property (nonatomic, strong) NSString* userSurname;
#end
Implementation
#import "SaveUserProfileRequest.h"
#import "SaveUserProfileResponse.h"
#import "OrderedDictionary.h"
#import "BaseData.h"
#implementation SaveUserProfileRequest
#synthesize user=_user, person=_person, address=_address, userId=_userId, userEmail=_userEmail, userName=_userName, userSurname=_userSurname;
- (id)initWithUser:(NSMutableArray*)user andPerson:(NSMutableArray*)person andAddress:(NSMutableArray*)address andUserId:(NSString*)userId andUserEmail:(NSString*)userEmail andUserName:(NSString*)userName andUserSurname:(NSString*)userSurname; {
self = [super init];
if(self){
self.user = user;
self.person = person;
self.address = address;
self.userId = userId;
self.userEmail = userEmail;
self.userName = userName;
self.userSurname = userSurname;
}
return self;
}
- (NSDictionary*) serialize{
OrderedDictionary *sup = [OrderedDictionary dictionaryWithCapacity:3];
[sup setValue:self.user forKey:#"User"];
[sup setValue:self.person forKey:#"Person"];
NSArray *users = [OrderedDictionary valueForKey:#"User"];
_user = [NSMutableArray arrayWithCapacity:[users count]];
for(NSDictionary *user in users){
OrderedDictionary *userDict = [OrderedDictionary dictionaryWithCapacity:2];
[userDict setValue:self.userId forKey:#"Id"];
[userDict setValue:self.userEmail forKey:#"Mail"];
return userDict;
}
NSArray *persons = [OrderedDictionary valueForKey:#"Person"];
_person = [NSMutableArray arrayWithCapacity:[persons count]];
for(NSDictionary *person in persons){
OrderedDictionary *personsDict = [OrderedDictionary dictionaryWithCapacity:2];
[personsDict setValue:self.userName forKey:#"Name"];
[personsDict setValue:self.userSurname forKey:#"Surname"];
return personsDict;
}
return sup;
}
Please, help me a little
Every little hint will be really appreciate.
Thanks !

Answer 1

For handeling JSON in Objective-C, I always use JSONKit. You can fork it here: https://github.com/johnezang/JSONKit
Some examples on how it can be used:
NSArray *array = #[..];
NSString *arrayAsJsonString = [array JSONString];
NSString *string = #"..";
id objectFromJsonString = [string objectFromJSONString]; // i.e an NSArray or NSDictionary

Answer 2

If your app is for iOS 5 or greater, you can use NSJSONSerialization:
http://developer.apple.com/library/ios/#documentation/Foundation/Reference/NSJSONSerialization_Class/Reference/Reference.html
Otherwise I recommend SBJson.