help with view controller

I'm having a bit of a problem with the view controller.

the MainWindow.xib has a view controller which is linked to MainViewViewController.h - the main view is the main view for the home screen. I'm then importing few buttons onto a scrollview from FirstPageViewController. I now want to open another view from the FirstPageViewController using:

Code:

[self presentModalViewController: newView animated:YES];

but that opens it in the scroll view where FirstPageViewViewController is being added as a subview instead of opening it from MainViewViewController

the scroll view only takes up half the screen

it works fine if I try opening a page using:

Code:

[self presentModalViewController: newView animated:YES];

from MainViewViewController - but not the FirstPageViewController

I have no idea how to fix this

any ideas?

 

thanks. I tried that, but it doesn't do anything :S the view doesn't open

I tried NSLogging presenting and parentviewcontrollers - both come up as null

not sure if this helps - but I'm using ARC

 

thanks, I think I'll target iOS 5 +. How can I add the FirstViewController as a child of MainViewController?

 

I have added this in MainViewController - in viewDidLoad

Code:

FirstPageViewController *firstPageViewController = [[FirstPageViewController alloc] initWithNibName:@"FirstPageViewController" bundle:nil];
    [self addChildViewController:firstPageViewController];

but it still doesn't work ;/

 

I managed to load the view, but now when the video plays from the view, and I click done, the the main view opens instead of the videoview and everything is shifted about 20px up. Any ideas what's wrong?



here's my code for the main view

Code:

#import "MainViewViewController.h"
#import "FirstPageViewController.h"
#import "AboutViewController.h"

static NSUInteger kNumberOfPages = 1;

@interface MainViewViewController (PrivateMethods)

-(void)loadScrollViewWithPage:(int)page;
-(void)scrollViewDidScroll:(UIScrollView *)sender;

@end

@implementation MainViewViewController

@synthesize pageControl, scrollView, viewControllers;
/*
-(void)addChildViewController:(UIViewController *)childController
{
    FirstPageViewController *fpvc = [[FirstPageViewController alloc] initWithNibName:@"FirstPageViewController" bundle:nil];
    [self addChildViewController:fpvc];
}
*/
-(IBAction)showInfo:(id)sender
{
    AboutViewController *aboutView = [[AboutViewController alloc] init];
    [aboutView setModalTransitionStyle:UIModalTransitionStylePartialCurl];
    [self presentModalViewController:aboutView animated:YES];
}

-(IBAction)changePage:(id)sender
{
    int page = pageControl.currentPage;
    [self loadScrollViewWithPage:page - 1];
    [self loadScrollViewWithPage:page];
    [self loadScrollViewWithPage:page - 1];
    
    
    CGRect frame = scrollView.frame;
    frame.origin.x = frame.size.width * page;
    frame.origin.y = 0;
    [scrollView scrollRectToVisible:frame animated:YES];
    
    pageControlUsed = YES;
}

-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
    pageControlUsed = NO;
}

-(void)scrollViewDidScroll:(UIScrollView *)sender
{
    if(pageControlUsed)
    {
        return;
    }
    
    CGFloat pageWidth = scrollView.frame.size.width;
    int page = floor((scrollView.contentOffset.x - pageWidth / 2) / pageWidth) + 1;
    pageControl.currentPage = page;
    
    [self loadScrollViewWithPage:page - 1];
    [self loadScrollViewWithPage:page];
    [self loadScrollViewWithPage:page + 1];
}

-(void)loadScrollViewWithPage:(int)page
{
    if(page < 0) return;
    if(page >= kNumberOfPages) return;
    
    FirstPageViewController *controller = [viewControllers objectAtIndex:page];
    if((NSNull *)controller == [NSNull null]){
        controller = [[FirstPageViewController alloc] initWithPageNumber:1];
        //[viewControllers replaceObjectAtIndex:page withObject:controller];
        [self addChildViewController: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];
    }
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (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

- (void)viewDidLoad
{
   // FirstPageViewController *firstPageViewController = [[FirstPageViewController alloc] initWithNibName:@"FirstPageViewController" bundle:nil];
    //[self addChildViewController:firstPageViewController];
 
    NSMutableArray *controllers = [[NSMutableArray alloc] init];
    for(unsigned i = 0; i < kNumberOfPages; i++){
        [controllers addObject:[NSNull null]];
    }
    
    self.viewControllers = controllers;
    
    scrollView.pagingEnabled = YES;
    scrollView.contentSize = CGSizeMake(scrollView.frame.size.width * kNumberOfPages, scrollView.frame.size.height);
    scrollView.showsVerticalScrollIndicator = NO;
    scrollView.showsHorizontalScrollIndicator = NO;
    scrollView.scrollsToTop = NO;
    scrollView.delegate = self;
    
    pageControl.numberOfPages = kNumberOfPages;
    pageControl.currentPage = 0;
    
    [self loadScrollViewWithPage:0];
    [self loadScrollViewWithPage:1];
    
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
}

- (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);
}

@end