How does UIScrollView work with StoryBoard and show different UIViewControllers? - ios5

Question

I have a StoryBoard. In that there is a UIViewController - on that I have put UIScrollView and UIPageControl. And on each page (say I have 3) I am trying to load a UIViewController (that shows different labels and table values).
Problem - I am able to load everything up but the label and table is not visible. Thou when I try to change the background color for each page - it does gets changed. I have researched various posts and code but nothing seems to work / show UIScrollView with StoryBoard (with UIViewController displaying labels and table).
I am thou able to do this with loading a separate XIB file but then the whole segue gets interrupted.
Please see my code below.
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
[super viewDidLoad];
//ScrollView and PageControl
// Create view controllers placeholder array
NSMutableArray *controllers = [[NSMutableArray alloc] init];
for (int i = 0; i < numberOfPages; i++)
{
[controllers addObject:[NSNull null]];
}
self.viewControllers = controllers;
// Set Scroll View
scrollView.pagingEnabled = YES;
scrollView.contentSize = CGSizeMake(scrollView.frame.size.width * numberOfPages, scrollView.frame.size.height);
scrollView.showsHorizontalScrollIndicator = NO;
scrollView.showsVerticalScrollIndicator = NO;
scrollView.scrollsToTop = NO;
scrollView.delegate = self;
// Set Page Control
pageControl.numberOfPages = numberOfPages;
pageControl.currentPage = 0;
// Load the visible and next page
[self loadScrollViewWithPage:0];
[self loadScrollViewWithPage:1];
}
- (void)scrollViewDidScroll:(UIScrollView *)sender
{
if (pageControlUsed)
{
// To know if scroll is valid - from Page Control
return;
}
// Changes Page Control indicator
CGFloat pageWidth = scrollView.frame.size.width;
int page = floor((scrollView.contentOffset.x - pageWidth / 2) / pageWidth) + 1;
pageControl.currentPage = page;
// Load the visible, previous and next pages
[self loadScrollViewWithPage:page - 1];
[self loadScrollViewWithPage:page];
[self loadScrollViewWithPage:page + 1];
}
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
pageControlUsed = NO;
}
- (void)loadScrollViewWithPage:(int)page
{
if (page < 0) return;
if (page >= numberOfPages) return;
// Load new Controller
ReportsDetailViewController *controller = [viewControllers objectAtIndex:page];
if ((NSNull *)controller == [NSNull null])
{
controller = [[ReportsDetailViewController alloc] init];
controller.pageNumber = [NSNumber numberWithInt:page];
[viewControllers replaceObjectAtIndex:page withObject:controller];
}
if (nil == controller.view.superview)
{
CGRect frame = scrollView.frame;
frame.origin.x = frame.size.width * page;
frame.origin.y = 0;
controller.view.frame = frame;
[scrollView addSubview:controller.view];
}
}

Answer 1

Try to create your ViewControllers like this:
YourViewController *vc = [self.storyboard instantiateViewControllerWithIdentifier:#"YourViewController"];
You can set the identifier of your view controller in the attribute inspector.
I had the same problem today and this did the trick for me.