UIPageViewController - view doesn't load - objective-c

Question

I want to load a UIView as the first page and some UIImageViews after that. The UIImageViews load fine, but the first UIView shows blank.
I designed the UIView in storyboard. It has some UIButtons and few other controls. What am I doing wrong?
I created the project from the default pageController template.
ModelController.m
- (id)init
{
self = [super init];
if (self) {
// Create the data model.
/*
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
_pageData = [[dateFormatter monthSymbols] copy];
*/
NSMutableArray *imageViews = [[NSMutableArray alloc] init];
FirstViewController *firstViewController = [[FirstViewController alloc] init];
firstViewController.view.frame = CGRectMake([UIScreen mainScreen].bounds.origin.x,[UIScreen mainScreen].bounds.origin.y,[[UIScreen mainScreen] bounds].size.height, [[UIScreen mainScreen] bounds].size.width);
[imageViews addObject:firstViewController];
for (int i=1; i<=19; i++) {
UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:[NSString stringWithFormat:#"picture%i.jpg", i]]];
imageView.frame = CGRectMake([UIScreen mainScreen].bounds.origin.x,[UIScreen mainScreen].bounds.origin.y,[[UIScreen mainScreen] bounds].size.height, [[UIScreen mainScreen] bounds].size.width);
[imageViews addObject:imageView];
}
_pageData = imageViews;
}
return self;
}
- (DataViewController *)viewControllerAtIndex:(NSUInteger)index storyboard:(UIStoryboard *)storyboard
{
// Return the data view controller for the given index.
if (([self.pageData count] == 0) || (index >= [self.pageData count])) {
return nil;
}
// Create a new view controller and pass suitable data.
DataViewController *dataViewController = [storyboard instantiateViewControllerWithIdentifier:#"DataViewController"];
dataViewController.dataObject = [self.pageData objectAtIndex:index];
if(index == 0)
{
//[dataViewController addChildViewController:[self.pageData objectAtIndex:index]];
FirstViewController *firstViewController = [self.pageData objectAtIndex:index];
[dataViewController.view addSubview:firstViewController.view];
}
else
{
UIImageView *imageView = [self.pageData objectAtIndex:index];
[dataViewController.view addSubview:imageView];
}
return dataViewController;
}

Answer 1

You haven't provided enough context to be certain, but it appears that what you need to load from the storyboard initially is an instance of FirstViewController, not an instance of UIView, so you'd need to do something like this instead of what you're currently doing:
FirstViewController *firstViewController = [self.storyboard instantiateInitialViewController];
// Note: If you need to adjust the frame of the controller's view, use the screen's
// application frame rather than its bounds.
controller.view.frame = [UIScreen mainScreen].applicationFrame;
Also, this seems like a bad idea, since you later fill the rest of the array with instances of UIImageView:
[imageViews addObject:firstViewController];
Why not add the controller's view to the array? Then you could eliminate the conditional logic in your viewControllerAtIndex:storyboard: method. Also, it's not clear why you're passing the storyboard in as an argument rather than using the built-in property, or for that matter, what class the code you posted belongs to, and what its relation is to the rest of your app. Maybe you could provide a little more info about that.

Answer 2

I got it to working by adding a xib file for FirstViewController. What ever I design in the xib shows up well. Previously I was designing it in the storyboard.