iOS/iPhone Gesture and Image View Slide Show - (Objective-C , iPhone)

//
//  ViewController.h
//  imageGesture
//
//  Created by Weerachai on 11/17/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
{
    IBOutlet UIImageView *imgView;
}

@end

//
//  ViewController.m
//  imageGesture
//
//  Created by Weerachai on 11/17/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()
{
    NSMutableArray *myObject;
    int i;
}

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
    
    i = 0;
    
    myObject = [[NSMutableArray alloc] init];
    [myObject addObject:@"girl1.jpg"];
    [myObject addObject:@"girl2.jpg"];
    [myObject addObject:@"girl3.jpg"];
    [myObject addObject:@"girl4.jpg"];
    
    
    imgView.image = [UIImage imageNamed:@"girl1.jpg"];
    
    UISwipeGestureRecognizer *swipeLeft = [[UISwipeGestureRecognizer alloc]
                                           initWithTarget:self
                                           action:@selector(swipeLeftHandle:)];
    swipeLeft.direction = UISwipeGestureRecognizerDirectionLeft;
    [[self view] addGestureRecognizer:swipeLeft];
    [swipeLeft release];
    
    UISwipeGestureRecognizer *swipeRight = [[UISwipeGestureRecognizer alloc]
                                            initWithTarget:self
                                            action:@selector(swipeRightHandle:)];
    swipeRight.direction = UISwipeGestureRecognizerDirectionRight;
    [[self view] addGestureRecognizer:swipeRight];
    [swipeRight release];
}


-(void) swipeRightHandle:(UISwipeGestureRecognizer *) sender {
    if (sender.direction == UISwipeGestureRecognizerDirectionRight)
    {
        i = i - 1;
        if(i < 0)
        {
            i = myObject.count - 1;
        }
        
        NSString *arrValue = [myObject objectAtIndex:i];
        imgView.image = [UIImage imageNamed:arrValue];
        
        NSLog (@"%@" , [NSString stringWithFormat:@"Hello %@",arrValue]);
    }
}

-(void) swipeLeftHandle:(UISwipeGestureRecognizer *) sender {
    if (sender.direction == UISwipeGestureRecognizerDirectionLeft)
    {
        i = i + 1;
        if(i >= myObject.count)
        {
            i = 0;
        }
        
        NSString *arrValue = [myObject objectAtIndex:i];
        imgView.image = [UIImage imageNamed:arrValue];
        
        NSLog (@"%@" , [NSString stringWithFormat:@"Hello %@",arrValue]);

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

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