i have added a page view controller and a 3 pages. I set Transition Style to Scroll and implemented the presentationCount and the presentationIndex method. now i get a black bar with gray/white dots at the bottom of my view. However, but i want the view to goright to the bottom and the make the dots appear over it(without the black background. How do i do that?
here is my code:
import UIKit class FilterViewController: UIPageViewController, UIPageViewControllerDataSource { override func viewDidLoad() { super.viewDidLoad() dataSource = self if let firstViewController = orderedViewControllers.first { setViewControllers([firstViewController], direction: .forward, animated: true, completion: nil) } // Do any additional setup after loading the view. } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } private(set) lazy var orderedViewControllers: [UIViewController] = { return [self.newViewController(category: "first"), self.newViewController(category: "second"), self.newViewController(category: "third")] }() private func newViewController(category: String) -> UIViewController { return UIStoryboard(name: "Main", bundle: nil) . instantiateViewController(withIdentifier: "\(category)ViewController") } func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? { guard let viewControllerIndex = orderedViewControllers.index(of: viewController) else { return nil } let previousIndex = viewControllerIndex - 1 guard previousIndex >= 0 else { return orderedViewControllers.last } guard orderedViewControllers.count > previousIndex else { return nil } return orderedViewControllers[previousIndex] } func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? { guard let viewControllerIndex = orderedViewControllers.index(of: viewController) else { return nil } let nextIndex = viewControllerIndex + 1 let orderedViewControllersCount = orderedViewControllers.count guard orderedViewControllersCount != nextIndex else { return orderedViewControllers.first } guard orderedViewControllersCount > nextIndex else { return nil } return orderedViewControllers[nextIndex] } func presentationCount(for pageViewController: UIPageViewController) -> Int { return orderedViewControllers.count } func presentationIndex(for pageViewController: UIPageViewController) -> Int { guard let firstViewController = viewControllers?.first, let firstViewControllerIndex = orderedViewControllers.index(of: firstViewController) else { return 0 } return firstViewControllerIndex } } 
1 Answers
Answers 1
ok, i got it myself. If anyone has the same problem, just override the viewDidLayoutSubviews() of the Page View Controller:
override func viewDidLayoutSubviews() { let v = self.view let subviews = v?.subviews if subviews?.count == 2 { var sv:UIScrollView? var pc:UIPageControl? for t in subviews! { if t is UIScrollView { sv = t as! UIScrollView } else { pc = t as! UIPageControl } } if(sv != nil && pc != nil) { sv?.frame = (v?.bounds)! v?.bringSubview(toFront: pc!) } } super.viewDidLayoutSubviews() } 
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