Using random() in NSArray Help!

[shabzcohelp]

Hey, I have a series of NSDictionary commands. Each initiates a new page. What i'm trying to do is somehow have it so that when the user opens the application a random page will be shown each time. I have some code snips to show.
Datasource.m:

- (id)init
{
	self = [super init];
	if (self != nil)
	{
		dataPages = [[NSArray alloc] initWithObjects:

                                        [NSDictionary dictionaryWithObjectsAndKeys:
					  @"Page 6", @"pageName",
					  @"Some text for page 5", @"pageText",
					  nil],
					 [NSDictionary dictionaryWithObjectsAndKeys:
					  @"Page 6", @"pageName",
					  @"Some text for page 5", @"pageText",
					  nil],
					 [NSDictionary dictionaryWithObjectsAndKeys:
					  @"Page 6", @"pageName",
					  @"Some text for page 5", @"pageText",
					  nil],
					 [NSDictionary dictionaryWithObjectsAndKeys:
					  @"Page 6", @"pageName",
					  @"Some text for page 5", @"pageText",
					  nil],

			nil];



	}
	return self;
}

- (NSInteger)numDataPages
{
	return [dataPages count];
}

- (NSDictionary *)dataForPage:(NSInteger)pageIndex
{
	return [dataPages objectAtIndex:pageIndex];
}

@end

#import "PagingScrollViewController.h"
#import "PageViewController.h"
#import "DataSource.h"

@implementation PagingScrollViewController

- (void)applyNewIndex:(NSInteger)newIndex pageController:(PageViewController *)pageController
{
	
	
	
	NSInteger pageCount = [[DataSource sharedDataSource] numDataPages];
	BOOL outOfBounds = newIndex >= pageCount || newIndex < 0;

	if (!outOfBounds)
	{
		CGRect pageFrame = pageController.view.frame;
		pageFrame.origin.y = 0;
		pageFrame.origin.x = scrollView.frame.size.width * newIndex;
		pageController.view.frame = pageFrame;
	}
	else
	{
		CGRect pageFrame = pageController.view.frame;
		pageFrame.origin.y = scrollView.frame.size.height;
		pageController.view.frame = pageFrame;
	}

	pageController.pageIndex = newIndex;
}

- (void)viewDidLoad
{
	currentPage = [[PageViewController alloc] initWithNibName:@"PageView" bundle:nil];
	nextPage = [[PageViewController alloc] initWithNibName:@"PageView" bundle:nil];
	[scrollView addSubview:currentPage.view];
	[scrollView addSubview:nextPage.view];
	NSInteger widthCount =  [[DataSource sharedDataSource] numDataPages];


	if (widthCount == 0)
	{
		widthCount = 1;
	}
	
    scrollView.contentSize =
		CGSizeMake(
			scrollView.frame.size.width * widthCount,
			scrollView.frame.size.height);
	scrollView.contentOffset = CGPointMake(0, 0);

	pageControl.numberOfPages = [[DataSource sharedDataSource] numDataPages];
	pageControl.currentPage = 0;
	
	[self applyNewIndex:0 pageController:currentPage];
	[self applyNewIndex:1 pageController:nextPage];
}

- (void)scrollViewDidScroll:(UIScrollView *)sender
{
    CGFloat pageWidth = scrollView.frame.size.width;
    float fractionalPage = scrollView.contentOffset.x / pageWidth;
	
	NSInteger lowerNumber = floor(fractionalPage);
	NSInteger upperNumber = lowerNumber + 1;
	
	if (lowerNumber == currentPage.pageIndex)
	{
		if (upperNumber != nextPage.pageIndex)
		{
			[self applyNewIndex:upperNumber pageController:nextPage];
		}
	}
	else if (upperNumber == currentPage.pageIndex)
	{
		if (lowerNumber != nextPage.pageIndex)
		{
			[self applyNewIndex:lowerNumber pageController:nextPage];
		}
	}
	else
	{
		if (lowerNumber == nextPage.pageIndex)
		{
			[self applyNewIndex:upperNumber pageController:currentPage];
		}
		else if (upperNumber == nextPage.pageIndex)
		{
			[self applyNewIndex:lowerNumber pageController:currentPage];
		}
		else
		{
			[self applyNewIndex:lowerNumber pageController:currentPage];
			[self applyNewIndex:upperNumber pageController:nextPage];
		}

	}
	
	[currentPage updateTextViews:YES];
	[nextPage updateTextViews:YES];
}

- (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)newScrollView
{
    CGFloat pageWidth = scrollView.frame.size.width;
    float fractionalPage = scrollView.contentOffset.x / pageWidth;
	NSInteger nearestNumber = lround(fractionalPage);

	if (currentPage.pageIndex != nearestNumber)
	{
		PageViewController *swapController = currentPage;
		currentPage = nextPage;
		nextPage = swapController;
	}

	[currentPage updateTextViews:YES];
}
-(void)startApplication
{
	codeButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:@"Email This MLIA"]];
	codeButton.segmentedControlStyle = UISegmentedControlStyleBar;
	codeButton.momentary = YES;
	codeButton.tintColor = [UIColor darkGrayColor];
	codeButton.center = CGPointMake(170,305);
	[self.view addSubview:codeButton];
[codeButton addTarget:self action:@selector(simpleAction) forControlEvents:UIControlEventValueChanged];}

- (void)scrollViewDidEndDecelerating:(UIScrollView *)newScrollView
{
	[self scrollViewDidEndScrollingAnimation:newScrollView];
	pageControl.currentPage = currentPage.pageIndex;
}

- (IBAction)changePage:(id)sender
{
	NSInteger pageIndex = pageControl.currentPage;

	// update the scroll view to the appropriate page
    CGRect frame = scrollView.frame;
    frame.origin.x = frame.size.width * pageIndex;
    frame.origin.y = 0;
    [scrollView scrollRectToVisible:frame animated:YES];
	

}


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

@end

If anyone could point me in the directin of where I should put the random() code to make it possible for a different page to be shown every time I open the application I would appreciate it very much

[flipside5]

try this....

- (void)applicationDidFinishLaunchingUIApplication *)application
{
...
srandom(time(NULL));
...
}

-------------------------------------------

PagingScrollViewController.m

- (void)viewDidLoad
{
....
NSUInteger numberOfTotalPages = ???;
NSUInteger randomPageNumber = random() % numberOfTotalPages;
pageControl.currentPage = randomPageNumber;
}