IGGInfinitePageViewController : Infinite Scroll with custom UIPageViewController

Simply example how to implement Infinite Scroll with UIPageViewController. In this project i show example in the real world if we want to combine with UITableView and use swipe(scroll) left or right for filter data on tableview row. This project include delegate function for let us know what is the current index of view controller when your scroll.

## New version for Swift 3 release 👉 [Infinite Scroll UIPageViewController in Swift 3] (https://github.com/igroomgrim/Infinite-scroll-with-uipageviewcontroller/tree/swift-3)👈

Requirements

Xcode 7 or higher
Swift 2.0+
Apple LLVM compiler
iOS 8.0 or higher
ARC

Installation

Build & Copy IGGInfinitePageViewController.framework to your project
Don't forget add this framework to embedded binaries <img src="ex_embedded.png") alt="embedded Infinite Scroll view to your project"/>
or just copy and paste code to your project

Setup

import IGGInfinitePageViewController to your project

import IGGInfinitePageViewController

set to your view controller

override func viewDidLoad() {
        super.viewDidLoad()

        let exampleFrame = view.frame
        
        let vc1 = OneViewController()
        let vc2 = TwoViewController()
        let vc3 = ThreeViewController()
        
        let ifnPageScroll = IGGInfinitePageViewController(frame: exampleFrame, viewControllers: [vc1, vc2, vc3])
        ifnPageScroll.infiniteDelegate = self
        
        // Add to your view
        addChildViewController(ifnPageScroll)
        view.addSubview(ifnPageScroll.view)
        ifnPageScroll.didMoveToParentViewController(self)
    }

if you want to use with delegate

extension ViewController: IGGInfinitePageViewDelegate {
    func pageViewCurrentIndex(currentIndex: Int) {
        print("currentIndex : \(currentIndex)")
        
        // Do what you want with currentIndex
    }
}

Explain Function & Delegate (Swift : New Version)

public func pageViewController(pageViewController: UIPageViewController,
                            viewControllerBeforeViewController viewController: UIViewController) -> UIViewController? {
        guard let index = controllers.indexOf(viewController) else {
            return nil
        }
        
        if index == 0 {
            return controllers[controllers.count-1]
        }
        
        let previousIndex = index - 1
        return controllers[previousIndex]
    }
    
public func pageViewController(pageViewController: UIPageViewController,
                            viewControllerAfterViewController viewController: UIViewController) -> UIViewController? {
    guard let index = controllers.indexOf(viewController) else {
        return nil
    }

    let nextIndex = index + 1
    if nextIndex == controllers.count {
            
        return controllers.first
    }
        
    return controllers[nextIndex]
}

Delegate

public protocol IGGInfinitePageViewDelegate {
    func pageViewCurrentIndex(currentIndex: Int)
}

Explain Function & Delegate (Obj-C : Old version)

-(RecordListViewController *)viewControllerAtIndex:(NSUInteger)index {
    
    UIStoryboard *mainStoryBoard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    RecordListViewController *childVC = [mainStoryBoard instantiateViewControllerWithIdentifier:@"RecordListViewController"];
    childVC.delegate = self;
    childVC.indexNumber = index;
    
    return childVC;
}

#pragma mark - Filter Menu Delegate
-(void)setCurrentFilterIndex:(NSUInteger)filterCurrentIndex {
    currentIndex = filterCurrentIndex;
    [self setHeaderStatus:[filterArray objectAtIndex:currentIndex]];
}

#pragma mark - PageView Datasource
-(UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController {
    
    NSUInteger index = [(RecordListViewController *)viewController indexNumber];
    
    if (index == 0) {
        
        return [self viewControllerAtIndex:filterArray.count-1];
    }
    index--;
    return [self viewControllerAtIndex:index];
}

-(UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController {
    
    NSUInteger index = [(RecordListViewController *)viewController indexNumber];
    index++;
    if (index == filterArray.count) {
        return [self viewControllerAtIndex:0];;
    }
    return [self viewControllerAtIndex:index];
}

#pragma mark - PageView Delegate
-(void)pageViewScroll:(NSUInteger)index andDirection:(UIPageViewControllerNavigationDirection)direction andAnimate:(BOOL)anim {
    RecordListViewController *vcObject = [self viewControllerAtIndex:index];
    viewsArray = [[NSMutableArray alloc] initWithArray:[NSArray arrayWithObject:vcObject]];
    [pagerView setViewControllers:viewsArray direction:direction animated:anim completion:nil];
}

Contact Me

Anak Mirasing

kanyaneepromma / Infinite-scroll-with-uipageviewcontroller