iOS/iPhone Passing JSON (NSJSONSerialization) Between View

    NSMutableDictionary *element = [NSMutableDictionary dictionary];
    [element setObject:[txtName text] forKey:@"Name"];
    [element setObject:[txtTel text] forKey:@"Tel"];
    [element setObject:[txtEmail text] forKey:@"Email"];
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:element
                                                       options:NSJSONWritingPrettyPrinted
                                                         error:nil];
    NSLog(@"jsonData= %@",jsonData);
    
    NSString* jsonCode = [[[NSString alloc] initWithData:jsonData
                                              encoding:NSUTF8StringEncoding] autorelease];
    NSLog(@"jsonCode= %@",jsonCode);
    
    DetailController *view2 = [[[DetailController alloc] initWithNibName:nil bundle:nil] autorelease];
    view2.json = jsonCode;
    [self presentViewController:view2 animated:NO completion:NULL];

    NSString *stringData = [self.json description];
    
    NSData *jsonData = [stringData dataUsingEncoding:NSUTF8StringEncoding];
    
    id jsonObjects = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:nil];
    
    // value in key name
    NSString *strName = [jsonObjects objectForKey:@"Name"];
    NSString *strTel = [jsonObjects objectForKey:@"Tel"];
    NSString *strEmail = [jsonObjects objectForKey:@"Email"];
    
    lblName.text = strName;
    lblTel.text = strTel;
    lblEmail.text = strEmail;

//
//  ViewController.h
//  passingJSONView
//
//  Created by Weerachai on 12/4/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
{
    IBOutlet UITextField *txtName;
    IBOutlet UITextField *txtTel;
    IBOutlet UITextField *txtEmail;
}

- (IBAction)btnSubmit:(id)sender;

@end

//
//  ViewController.m
//  passingJSONView
//
//  Created by Weerachai on 12/4/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import "ViewController.h"

#import "DetailController.h"

@interface ViewController ()

@end

@implementation ViewController

- (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)btnSubmit:(id)sender {
    
    NSMutableDictionary *element = [NSMutableDictionary dictionary];
    [element setObject:[txtName text] forKey:@"Name"];
    [element setObject:[txtTel text] forKey:@"Tel"];
    [element setObject:[txtEmail text] forKey:@"Email"];
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:element
                                                       options:NSJSONWritingPrettyPrinted
                                                         error:nil];
    NSLog(@"jsonData= %@",jsonData);
    
    NSString* jsonCode = [[[NSString alloc] initWithData:jsonData
                                              encoding:NSUTF8StringEncoding] autorelease];
    NSLog(@"jsonCode= %@",jsonCode);
    
    DetailController *view2 = [[[DetailController alloc] initWithNibName:nil bundle:nil] autorelease];
    view2.json = jsonCode;
    [self presentViewController:view2 animated:NO completion:NULL];
}

- (void)dealloc {
    [txtName release];
    [txtTel release];
    [txtEmail release];
    [super dealloc];
}

@end

//
//  DetailController.h
//  passingJSONView
//
//  Created by Weerachai on 12/4/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import "ViewController.h"

@interface DetailController : ViewController
{
    IBOutlet UILabel *lblName;
    IBOutlet UILabel *lblTel;
    IBOutlet UILabel *lblEmail;
}

@property (strong, nonatomic) id json;

@end

//
//  DetailController.m
//  passingJSONView
//
//  Created by Weerachai on 12/4/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import "DetailController.h"

@interface DetailController ()

@end

@implementation DetailController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
    
    NSString *stringData = [self.json description];
    
    NSData *jsonData = [stringData dataUsingEncoding:NSUTF8StringEncoding];
    
    id jsonObjects = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:nil];
    
    // value in key name
    NSString *strName = [jsonObjects objectForKey:@"Name"];
    NSString *strTel = [jsonObjects objectForKey:@"Tel"];
    NSString *strEmail = [jsonObjects objectForKey:@"Email"];
    //NSLog(@"MemberID = %@",strName);
    //NSLog(@"Name = %@",strTel);
    //NSLog(@"Tel = %@",strEmail);
    
    lblName.text = strName;
    lblTel.text = strTel;
    lblEmail.text = strEmail;
  
}

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

- (void)dealloc {
    [lblName release];
    [lblTel release];
    [lblTel release];
    [lblEmail release];
    [super dealloc];
}
@end