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Merge pull request #537 from rechsteiner/3.0
Version 3.0
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Example/Examples/PageViewController/PageViewExampleViewController.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| import UIKit | ||
| import Parchment | ||
|
|
||
| /// Parchment provides a custom `UIPageViewController` alternative | ||
| /// if you need better delegate methods called `PageViewController`. | ||
| class PageViewExampleViewController: UIViewController { | ||
| let viewControllers: [UIViewController] = [ | ||
| ContentViewController(index: 0), | ||
| ContentViewController(index: 1), | ||
| ContentViewController(index: 2), | ||
| ContentViewController(index: 3), | ||
| ContentViewController(index: 4), | ||
| ] | ||
|
|
||
| override func viewDidLoad() { | ||
| let pageViewController = PageViewController() | ||
| pageViewController.dataSource = self | ||
| pageViewController.delegate = self | ||
| pageViewController.selectViewController(viewControllers[0], direction: .none) | ||
|
|
||
| addChild(pageViewController) | ||
| view.addSubview(pageViewController.view) | ||
| view.constrainToEdges(pageViewController.view) | ||
| pageViewController.didMove(toParent: self) | ||
| } | ||
| } | ||
|
|
||
| extension PageViewExampleViewController: PageViewControllerDataSource { | ||
| func pageViewController( | ||
| _ pageViewController: PageViewController, | ||
| viewControllerBeforeViewController viewController: UIViewController) -> UIViewController? { | ||
| guard let index = viewControllers.firstIndex(of: viewController) else { return nil } | ||
| if index > 0 { | ||
| return viewControllers[index - 1] | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func pageViewController( | ||
| _ pageViewController: PageViewController, | ||
| viewControllerAfterViewController viewController: UIViewController) -> UIViewController? { | ||
| guard let index = viewControllers.firstIndex(of: viewController) else { return nil } | ||
| if index < viewControllers.count - 1 { | ||
| return viewControllers[index + 1] | ||
| } | ||
| return nil | ||
| } | ||
| } | ||
|
|
||
| extension PageViewExampleViewController: PageViewControllerDelegate { | ||
| func pageViewController(_ pageViewController: PageViewController, willStartScrollingFrom startingViewController: UIViewController, destinationViewController: UIViewController) { | ||
| print("willStartScrollingFrom: ", | ||
| startingViewController.title ?? "", | ||
| destinationViewController.title ?? "") | ||
| } | ||
|
|
||
| func pageViewController(_ pageViewController: PageViewController, isScrollingFrom startingViewController: UIViewController, destinationViewController: UIViewController?, progress: CGFloat) { | ||
| print("isScrollingFrom: ", | ||
| startingViewController.title ?? "", | ||
| destinationViewController?.title ?? "", | ||
| progress) | ||
| } | ||
|
|
||
| func pageViewController(_ pageViewController: PageViewController, didFinishScrollingFrom startingViewController: UIViewController, destinationViewController: UIViewController, transitionSuccessful: Bool) { | ||
| print("didFinishScrollingFrom: ", | ||
| startingViewController.title ?? "", | ||
| destinationViewController.title ?? "", | ||
| transitionSuccessful) | ||
| } | ||
| } |
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