PageViewController.m

//
//  PageViewController.m
//  TeachNotes
//
//  Created by Davis Carlson on 2014-06-10.
//  Copyright (c) 2014 Davis Carlson. All rights reserved.
//

#import "PageViewController.h"
#import "PageChildViewController.h"

@interface PageViewController ()

@end

@implementation PageViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view
    
    self.pageController = [[UIPageViewController alloc] initWithTransitionStyle:UIPageViewControllerTransitionStyleScroll navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal options:nil];
    
    self.pageController.dataSource = self;
    [[self.pageController view] setFrame:[pageControl bounds]];

    PageChildViewController *initialViewController;
        initialViewController = [self viewControllerAtIndex:1];
    NSArray *viewControllers = [NSArray arrayWithObject:initialViewController];
    
    [self.pageController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:nil];
    
    [self addChildViewController:self.pageController];
    [pageControl addSubview:[self.pageController view]];
    [self.pageController didMoveToParentViewController:self];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/
- (PageChildViewController *)viewControllerAtIndex:(NSUInteger)index {
    
    PageChildViewController *childViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"PageChildViewController"];
    childViewController.index = index;
    
    return childViewController;
    
}

- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController {
    
    NSUInteger index = [(PageChildViewController *)viewController index];
    
    if (index == 1) {
        return nil;
        
    }
    
    // Decrease the index by 1 to return
    index--;
    
    return [self viewControllerAtIndex:index];
    
}

- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController {
    
    NSUInteger index = [(PageChildViewController *)viewController index];
    
    index++;
    if (index == 6) {
        return nil;
    }
    
    return [self viewControllerAtIndex:index];
    
}
- (NSInteger)presentationCountForPageViewController:(UIPageViewController *)pageViewController {
    // The number of items reflected in the page indicator.
    return 5;
    
}
- (NSInteger)presentationIndexForPageViewController:(UIPageViewController *)pageViewController {
    // The number of items reflected in the page indicator.
    return 0;
    
}

@end