iOS Memory Release Problem

[Appline]

My project got a scrollview with a large image (800x600 png) and animation.
When a leave the view to another view my memory increase and i have a memory leak and crash.
this is my code:

S1001ipad.h

#import <UIKit/UIKit.h>

@interface S1001ipad : UIViewController<UIScrollViewDelegate>
{UIImageView *imageview1;
	UIImageView *imageview2;
	UIImageView *imageview3;
}


@property (retain, nonatomic) IBOutlet UIButton *next;
@end

S1001ipad.m

#import "S1001ipad.h"

@interface S1001ipad ()

@end

@implementation S1001ipad
@synthesize next;

UIImageView *animazione;
const int numImages1001ipad = 3;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}
- (void)viewDidLoad
{
    [super viewDidLoad];
    UIScrollView* scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(112, 84, 800, 600)];
	[scroll setDelegate:self];
    [scroll setShowsHorizontalScrollIndicator:NO];    
    [scroll setShowsVerticalScrollIndicator:NO];
	scroll.contentSize = CGSizeMake(670 * numImages1001ipad, 741);
	[scroll setContentSize:CGSizeMake(670 * numImages1001ipad, 741)];
	scroll.contentOffset = CGPointMake(0, 0	);
	scroll.pagingEnabled = TRUE;
	scroll.contentSize = CGSizeMake(2410, 1);
	imageview1 = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 800, 600)];
	[imageview1 setImage:[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"S101-00" ofType:@"png"]]];
	[imageview1 setTag:1];
	
	imageview2 = [[UIImageView alloc] initWithFrame:CGRectMake(300, 0, 800, 600)];
	[imageview2 setTag:2];
	
	imageview3 = [[UIImageView alloc] initWithFrame:CGRectMake(600, 0, 800, 600)];
	[imageview3 setTag:3];
	
	[scroll addSubview:imageview1];
	[scroll addSubview:imageview2];
	[scroll addSubview:imageview3];
	
	
	[self.view addSubview:scroll];
	[scroll release];
    
	// Do any additional setup after loading the view.    // Do any additional setup after loading the view.
    
}



-(void)scrollViewDidScroll:(UIScrollView*)scrollView
{
    const CGFloat currPos = scrollView.contentOffset.x;
	const NSInteger selectedPage = lroundf(currPos /700.0); 
	const NSInteger zone = 1 + (selectedPage % 5); 
	const NSInteger nextPage = selectedPage + 1;
	const NSInteger prevPage = selectedPage - 1;
	/// Next page
	if (nextPage < numImages1001ipad)
	{
		[animazione stopAnimating];
        [animazione removeFromSuperview];
        
        NSInteger nextViewTag = zone + 1;
		if (nextViewTag == 4)
			nextViewTag = 1;
		UIImageView* nextView = (UIImageView*)[scrollView viewWithTag:nextViewTag];
		nextView.frame = CGRectMake(nextPage * 800, 0, 800, 600);
		NSString *str = [NSString stringWithFormat:@"S101-0%d", nextPage];
		UIImage* img = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:str ofType:@"png"]];
		nextView.image = img;
        NSLog(@"prepunteggio: %i ", nextViewTag );
       
	}else {
        
    }
	/// Prev page
	if (prevPage >= 0)
	{
		NSInteger prevViewTag = zone - 1;
        [animazione stopAnimating];
        [animazione removeFromSuperview];
		if (!prevViewTag)
			prevViewTag = 4;
		UIImageView* prevView = (UIImageView*)[scrollView viewWithTag:prevViewTag];
		prevView.frame = (CGRect){.origin.x = prevPage * 800, .origin.y = 0.0f, .size = prevView.frame.size};
		NSString *str = [NSString stringWithFormat:@"S101-0%d", prevPage];
		UIImage* img = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:str ofType:@"png"]];
		prevView.image = img;
        next.enabled = NO;
        self.next.alpha = 0;
        
        
	}
    if (zone == 3)
    {
        
        next.enabled = YES;
        self.next.alpha = 1;
        
        animazione = [[UIImageView alloc] initWithFrame:CGRectMake(112, 84, 800, 600)];
        // load all the frames of our animation
        NSMutableArray *a = [NSMutableArray array];
        //[a addObject: [UIViewController ]];
       
        [a addObject:[UIImage imageNamed:@"A101-02-00.png"]];
        [a addObject:[UIImage imageNamed:@"A101-02-01.png"]];
        [a addObject:[UIImage imageNamed:@"A101-02-00.png"]];
        [a addObject:[UIImage imageNamed:@"A101-02-02.png"]];
       
        animazione.animationImages = a;     
        // all frames will execute in 1.75 seconds
        animazione.animationDuration = 1
        ;
        // repeat the annimation forever
        animazione.animationRepeatCount = 0;
        // start animating
        [animazione startAnimating];
        // add the animation view to the main window 
        
        [self.view addSubview:animazione];
[animazione setImage:nil];
    }
   
    
    
    
    
    
}

- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView {
	return imageview1;
}


-(void)dealloc {
	[imageview1 release];
	[imageview2 release];
	[imageview3 release];
    [animazione release]; 
    animazione.animationImages = nil;
    [animazione setImage:nil];
    [next release];
    
    [next release];
	[super dealloc];
}
- (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{
    return ((interfaceOrientation == UIInterfaceOrientationLandscapeLeft) || (interfaceOrientation == UIInterfaceOrientationLandscapeRight));
}
- (void)viewDidUnload {
   animazione.animationImages = nil;
    [self setNext:nil];
    [super viewDidUnload];
}
- (void)viewDidDisappear{
    
    [imageview1 release];
	[imageview2 release];
	[imageview3 release];
    [animazione release]; 
    animazione.animationImages = nil;
    [animazione setImage:nil];

}
@end

I can't release anything.. Help me!!!

 

[cMacSW]

I see two things, but these may not be your problem, in dealloc you have [Next release]; twice.

Also, In viewDidLoad I would release the imageViews after adding as subviews and not in the dealloc method.