iOS/iPhone Passing Data Between View (Objective-C,iPhone,iPad)

    NSString *name = [txtName text];
    
   DetailController *view2 = [[[DetailController alloc] initWithNibName:nil bundle:nil] autorelease];
    view2.detailItem = name;
   [self presentViewController:view2 animated:NO completion:NULL];

//
//  ViewController.h
//
//  Created by Weerachai on 10/27/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import <UIKit/UIKit.h>

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

- (IBAction)btnSubmit:(id)sender;

@end

//
//  ViewController.m
//
//  Created by Weerachai on 10/27/55 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.
}

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

- (IBAction)btnSubmit:(id)sender {
    
    NSString *name = [txtName text];
    
   DetailController *view2 = [[[DetailController alloc] initWithNibName:nil bundle:nil] autorelease];
    view2.detailItem = name;
   [self presentViewController:view2 animated:NO completion:NULL];
    
}

@end

//
//  DetailController.h
//
//  Created by Weerachai on 10/27/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface DetailController : UIViewController
{
    IBOutlet UILabel *lblResult;
}

@property (strong, nonatomic) id detailItem;

@end

//
//  DetailController.m
//
//  Created by Weerachai on 10/27/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import "DetailController.h"

@interface DetailController ()

@end

@implementation DetailController

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
    
     lblResult.text = [self.detailItem description];
}

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

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