iOS/iPhone Dialog Popup and Optional Item - UIAlertView (Objective-C,iPhone)

    UIAlertView *alert = [[UIAlertView alloc]
                          initWithTitle:@"Please Select Item!"
                          message:@"This is" delegate:self
                          cancelButtonTitle:@"OK"
                          otherButtonTitles:@"Item1",@"Item1",@"Item3",@"Item4", nil];
    [alert show];

-(void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
    if(buttonIndex == 1){
        lblResult.text = @"Your selected Item1";
    }else if(buttonIndex == 2)
    {
        lblResult.text = @"Your selected Item2";
    }else if(buttonIndex == 3)
    {
        lblResult.text = @"Your selected Item3";
    }else if(buttonIndex == 4)
    {
        lblResult.text = @"Your selected Item4";
    }
}

//
//  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 UILabel *lblResult;
}

- (IBAction)btnAlertView:(id)sender;

@end

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

#import "ViewController.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 {
    [lblResult release];
    [super dealloc];
}

- (IBAction)btnAlertView:(id)sender {
    
    UIAlertView *alert = [[UIAlertView alloc]
                          initWithTitle:@"Please Select Item!"
                          message:@"This is" delegate:self
                          cancelButtonTitle:@"OK"
                          otherButtonTitles:@"Item1",@"Item1",@"Item3",@"Item4", nil];
    [alert show];
    
}

-(void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
    if(buttonIndex == 1){
        lblResult.text = @"Your selected Item1";
    }else if(buttonIndex == 2)
    {
        lblResult.text = @"Your selected Item2";
    }else if(buttonIndex == 3)
    {
        lblResult.text = @"Your selected Item3";
    }else if(buttonIndex == 4)
    {
        lblResult.text = @"Your selected Item4";
    }
}

@end