iOS Problem with UIView, UIViewController and IB

[Nayefc]

Hello Everyone,

Okay so I am trying to create a grid of 6 UIImageViews which scrolls vertically (and can show up to 15). The way I am doing it is reusing the same 6 UIImageViews. Before fixing the actual scrolling, I want to be able to at least see the images on the view - they are not showing up.

So here's what I did. I subclass-ed UIView as follows (its still called ScrollingViewController becuase it was a ViewController before I changed it to become a UIView. I should rename it to ScrollingView)

@implementation ScrollingViewController

@synthesize scrollView, imageSet, imageView1, imageView2, imageView3, imageView4, imageView5, imageView6, image1Index, image2Index, image3Index, image4Index, image5Index, image6Index;

- (void)setImages:(NSArray *)images {
	
    imageView1.frame = CGRectMake(683, 0, 341, 352);
    imageView2.frame = CGRectMake(342, 0, 341, 352);
    imageView3.frame = CGRectMake(0, 0, 341, 352);
    imageView4.frame = CGRectMake(683, 352, 341, 352);
    imageView5.frame = CGRectMake(342, 352, 341, 352);
    imageView6.frame = CGRectMake(0, 352, 341, 352);
    
    imageView1 = [imageSet objectAtIndex:0];
    imageView2 = [imageSet objectAtIndex:1];
    imageView3 = [imageSet objectAtIndex:2];
    imageView4 = [imageSet objectAtIndex:3];
    imageView5 = [imageSet objectAtIndex:4];
    imageView6 = [imageSet objectAtIndex:5];
    
	scrollView.contentSize = CGSizeMake([imageSet count] * 341, 352);
}

- (id) init {
    self = [super init];
	if(self != nil) {
		scrollView = [[UIScrollView alloc] init];
		scrollView.scrollEnabled = YES;
		scrollView.pagingEnabled = NO;
		scrollView.directionalLockEnabled = YES;
		scrollView.showsVerticalScrollIndicator = YES;
		scrollView.showsHorizontalScrollIndicator = NO;
		scrollView.delegate = self;
		//scrollView.backgroundColor = [UIColor blueColor];
		scrollView.autoresizesSubviews = YES;
		scrollView.frame = CGRectMake(0, 0, 1024, 704);
		//[self.view addSubview:scrollView];
        
        imageView1 = [[UIImageView alloc] init];
        [scrollView addSubview:imageView1];
        
        imageView2 = [[UIImageView alloc] init];
        [scrollView addSubview:imageView2];
        
        imageView3 = [[UIImageView alloc] init];
        [scrollView addSubview:imageView3];
        
        imageView4 = [[UIImageView alloc] init];
        [scrollView addSubview:imageView4];
        
        imageView5 = [[UIImageView alloc] init];
        [scrollView addSubview:imageView5];
        
        imageView6 = [[UIImageView alloc] init];
        [scrollView addSubview:imageView6];
	}
	
	return self;
}

#pragma mark - UIScrollView Delegate Method
- (void) scrollViewDidScroll:(UIScrollView *) thisScrollView {
    
    self.scrollView.contentOffset = CGPointMake(1024, thisScrollView.contentOffset.y);
    
/**** Fix Scrolling here after it actually appears on the View   
    CGFLoat pageHeight = 1024;
    float currPos = scrollView.contentOffset.y;
    int selectedPage = roundf(currPos / pageHeight);
    float truePosition = selectedPage * pageHeight;
    
    if (currPos > 1024) {
        
    }
    
    
    ///////////////////////////////////
    
    
	CGFloat pageWidth = 1024;
	float currPos = scrollView.contentOffset.x;
	
	int selectedPage = roundf(currPos / pageWidth);
	
	float truePosition = selectedPage * pageWidth;
	
	int zone = selectedPage % 2;
	
	BOOL view1Active = zone == 0;
	
	UIImageView *nextView = view1Active ? view2 : view1;
	
	int nextpage = truePosition > currPos ? selectedPage-1 : selectedPage+1;
	
	if(nextpage >= 0 && nextpage < [imageSet count]) {
		if((view1Active && nextpage == view1Index) || (!view1Active && nextpage == view2Index)) return;
		
		NSLog(@"Load next image!");
		
		nextView.frame = CGRectMake(nextpage*1024, 0, 1024, 704);
		nextView.image = [imageSet objectAtIndex:nextpage];
		
		if(view1Active) view1Index = nextpage;
		else view2Index = nextpage;
	}*/
 }

- (void)dealloc {
    [scrollView release];
    [imageSet release];
    [imageView1 release];
    [imageView2 release];
    [imageView3 release];
    [imageView4 release];
    [imageView5 release];
    [imageView6 release];
    [super dealloc];
}

@end

And then I have ViewController as follows (which gets pushed on top of the UINavigationController stack from another ViewController:

@implementation TopNewsViewController

@synthesize scrollingViewController;

- (id)init {
    
    self = [super init];
    
    if(self != nil) {
        /*scrollingViewController = [[ScrollingViewController alloc] init];
        scrollingViewController.view.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
        scrollingViewController.view.autoresizesSubviews = YES;
        [self.view addSubview:scrollingViewController.view];*/
        [self.view addSubview:scrollingViewController];
    }
    
    return self;
}

- (void) viewDidLoad {
	// Load an array of images into the page view controller
	[scrollingViewController setImages:[NSArray arrayWithObjects:
                                        [UIImage imageNamed:@"1.jpg"], 
                                        [UIImage imageNamed:@"2.jpg"], 
                                        [UIImage imageNamed:@"3.jpg"], 
                                        [UIImage imageNamed:@"4.jpg"], 
                                        [UIImage imageNamed:@"5.jpg"], 
                                        [UIImage imageNamed:@"6.jpg"], 
                                        [UIImage imageNamed:@"7.jpg"], 
                                        [UIImage imageNamed:@"8.jpg"], 
                                        [UIImage imageNamed:@"9.jpg"], 
                                        [UIImage imageNamed:@"1.jpg"], 
                                        [UIImage imageNamed:@"2.jpg"], 
                                        [UIImage imageNamed:@"3.jpg"], 
                                        [UIImage imageNamed:@"4.jpg"], 
                                        [UIImage imageNamed:@"5.jpg"], 
                                        [UIImage imageNamed:@"6.jpg"], 
                                        nil]];
}

#pragma mark - View Lifecycle / Memory Management
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
}

- (void)viewDidUnload {
    [super viewDidUnload];
    self.scrollingViewController = nil;
}

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

@end

How do I make this UIView appear in IB? In IB for TopViewController.xib, I created a View and connected it to the File's Owner and then created another View in it, and changed it to be a ScrollingViewController and connected it to the ScrollingViewController outlet in IB.
Here's how my IB is structured:
> View (UIView)
- ScrollingViewController (UIView)


Now when I run the app, the view that shows up is still white. When I add a Label in IB, it shows up when I run the app which means that my UIView drawings aren't showing up. Why is that? Can someone help me?

Any help is much appreciated.

Thank you,