Problem Exc_Arithmetic in Obj-C program for iphone - iphone

Question

I am writing a program with a UIImageView. However, I am running into the error: Exc_Arithmetic.
Here is my implementation:
#import "SalaatAppViewController.h"
#implementation SalaatAppViewController
#synthesize imageView;
#synthesize pauseButton;
#synthesize playButton;
#synthesize nextButton;
-(IBAction)pushPauseButton {
[imageView stopAnimating];
}
-(IBAction)pushPlayButton {
[imageView startAnimating];
}
- (IBAction)pushNextButton {
imagesIndex = (imagesIndex + 1) % [images count];
imageView.image = [images objectAtIndex:imagesIndex];
}
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
imageView.animationImages = [[NSArray arrayWithObjects:
[UIImage imageNamed:#"1.png"],
[UIImage imageNamed:#"2.png"],
[UIImage imageNamed:#"3.png"],
nil] retain];
UIImage *image = [UIImage imageNamed: #"2.png"];
[imageView setImage:image];
imageView.animationDuration = 1.00;
imageView.animationRepeatCount = 0;
[imageView startAnimating];
imagesIndex = 0;
imageView.image = [images objectAtIndex:imagesIndex];
[super viewDidLoad];
[self.view addSubview:imageView];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
-(void) dealloc {
[imageView release];
[pauseButton release];
[playButton release];
[nextButton release];
[super dealloc];
}
#end
My Header:
#import <UIKit/UIKit.h>
#interface SalaatAppViewController : UIViewController {
UIImageView *imageView;
UIButton *pauseButton;
UIButton *playButton;
UIButton *nextButton;
NSUInteger images;
NSUInteger imagesIndex;
}
#property (nonatomic, retain) IBOutlet UIImageView *imageView;
#property (nonatomic, retain) IBOutlet UIButton *pauseButton;
#property (nonatomic, retain) IBOutlet UIButton *playButton;
#property (nonatomic, retain) IBOutlet UIButton *nextButton;
-(IBAction)pushPauseButton;
-(IBAction)pushPlayButton;
-(IBAction)pushNextButton;
#end
The program runs, but with 9 warnings and 1 error. Also, when I push the Next Button, it crashes. Please Help!

Answer 1

The exception indicates that you tried to divide by 0. This expression does a modulus (%) function which returns remainder after division, probably [images count] is 0:
imagesIndex = (imagesIndex + 1) % [images count];

Answer 2

Ahmad your "images" property should be not NSUInteger but NSArray*. Define it in a following way:
NSArray *images;
It seems you replaced too much by following my previous guidance. =)

Answer 3

You never initialize images. Also, as you're calling the count method, it seems that it should be an NSArray and not an NSUInteger.