AaoIi AaoIi - 6 months ago 450
iOS Question

Disable UIPageViewController bouncing - Swift

I've been making a sample app with scrolling between

UIViewControllers
but the point is i want to disable the bouncing effect at the end of scrolling and when going back to the first
UIViewController
.

here is my code :

class PageViewController: UIPageViewController,UIPageViewControllerDataSource, UIPageViewControllerDelegate{

var index = 0
var identifiers: NSArray = ["FirstNavigationController", "SecondNavigationController"]
override func viewDidLoad() {

self.dataSource = self
self.delegate = self

let startingViewController = self.viewControllerAtIndex(self.index)

let viewControllers: NSArray = [startingViewController]
self.setViewControllers(viewControllers as [AnyObject], direction: UIPageViewControllerNavigationDirection.Forward, animated: false, completion: nil)
}

func viewControllerAtIndex(index: Int) -> UINavigationController! {

let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)
//first view controller = firstViewControllers navigation controller
if index == 0 {

return storyBoard.instantiateViewControllerWithIdentifier("FirstNavigationController") as! UINavigationController

}

//second view controller = secondViewController's navigation controller
if index == 1 {

return storyBoard.instantiateViewControllerWithIdentifier("SecondNavigationController") as! UINavigationController
}

return nil
}
func pageViewController(pageViewController: UIPageViewController, viewControllerAfterViewController viewController: UIViewController) -> UIViewController? {

let identifier = viewController.restorationIdentifier
let index = self.identifiers.indexOfObject(identifier!)

//if the index is the end of the array, return nil since we dont want a view controller after the last one
if index == identifiers.count - 1 {

return nil
}

//increment the index to get the viewController after the current index
self.index = self.index + 1
return self.viewControllerAtIndex(self.index)

}

func pageViewController(pageViewController: UIPageViewController, viewControllerBeforeViewController viewController: UIViewController) -> UIViewController? {

let identifier = viewController.restorationIdentifier
let index = self.identifiers.indexOfObject(identifier!)

//if the index is 0, return nil since we dont want a view controller before the first one
if index == 0 {

return nil
}

//decrement the index to get the viewController before the current one
self.index = self.index - 1
return self.viewControllerAtIndex(self.index)

}

}


Take a look here :

enter image description here

Answer

I don't know if you can. UIPageController is not very customizable.

Personally, when I want to scroll between UIViewController, I prefer using a simple UIViewController, which will be a container, with an UIScrollView in it. Then I add programmatically all the controllers in the contentSize of the UIScrollView. You have to add all the controllers as child of the container.

UPDATE iOS 9

func setupDetailViewControllers() {
    var previousController: UIViewController?
    for controller in self.controllers {
        addChildViewController(controller)
        addControllerInContentView(controller, previousController: previousController)
        controller.didMoveToParentViewController(self)
        previousController = controller
    }
}

func addControllerInContentView(controller: UIViewController, previousController: UIViewController?) {
    contentView.addSubview(controller.view)
    controller.view.translatesAutoresizingMaskIntoConstraints = false

    // top
    controller.view.topAnchor.constraintEqualToAnchor(contentView.topAnchor).active = true

    // bottom
    controller.view.bottomAnchor.constraintEqualToAnchor(contentView.bottomAnchor).active = true

    // trailing
    trailingContentViewConstraint?.active = false
    trailingContentViewConstraint = controller.view.trailingAnchor.constraintEqualToAnchor(contentView.trailingAnchor)
    trailingContentViewConstraint?.active = true

    // leading
    let leadingAnchor = previousController?.view.trailingAnchor ?? contentView.leadingAnchor
    controller.view.leadingAnchor.constraintEqualToAnchor(leadingAnchor).active = true

    // width
    controller.view.widthAnchor.constraintEqualToAnchor(scrollView.widthAnchor).active = true
}

PREVIOUS ANSWER

Like so :

scrollView is an IBOutlet with contraints to each edge of the ContainerViewController

class ContainerViewController: UIViewController {

@IBOutlet var scrollView: UIScrollView!

override func viewDidLoad() {
    super.viewDidLoad()
    scrollView.bounces = false
    scrollView.pagingEnabled = true
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()

}

override func viewDidLayoutSubviews() {
    initScrollView()
}

func initScrollView(){
    let viewController1 = storyboard?.instantiateViewControllerWithIdentifier("ViewController1") as! ViewController1

    viewController1.willMoveToParentViewController(self)
    viewController1.view.frame = scrollView.bounds

    let viewController2 = storyboard?.instantiateViewControllerWithIdentifier("ViewController2") as! ViewController2

    viewController2.willMoveToParentViewController(self)
    viewController2.view.frame.size = scrollView.frame.size
    viewController2.view.frame.origin = CGPoint(x: view.frame.width, y: 0)

    scrollView.contentSize = CGSize(width: 2 * scrollView.frame.width, height: scrollView.frame.height)

    scrollView.addSubview(viewController2.view)
    self.addChildViewController(viewController2)
    viewController2.didMoveToParentViewController(self)

    scrollView.addSubview(viewController1.view)
    self.addChildViewController(viewController1)
    viewController1.didMoveToParentViewController(self)
}}