前提・実現したいこと
segmentをスワイプでも切り替えられるようにしたい
発生している問題・エラーメッセージ
下記のコードではsegmentを押した時はラベルが表示されますが、スワイプで切り替えた時そのラベルが消えてしまいます。というかそもそも表示されていない...?
ラベルが表示されるviewはsegmentを押下したときとスワイプで切り替えるときではviewが異なるんでしょか。。
該当のソースコード
import UIKit class MainViewController: UIViewController, UIPageViewControllerDataSource, UIPageViewControllerDelegate { let idList: [String] = ["first", "second", "third"] var pageViewController: UIPageViewController! var viewControllers: [UIViewController] = [] @IBOutlet weak var selectTab: UISegmentedControl! override func viewDidLoad() { super.viewDidLoad() selectTab.setTitle("1枚目", forSegmentAt: 0) selectTab.setTitle("2枚目", forSegmentAt: 1) selectTab.setTitle("3枚目", forSegmentAt: 2) for id in idList { viewControllers.append((storyboard?.instantiateViewController(withIdentifier: id))!) } pageViewController = children[0] as? UIPageViewController pageViewController.setViewControllers([viewControllers[0]], direction: .forward, animated: true, completion: nil) pageViewController.dataSource = self pageViewController.delegate = self let mylabel = UILabel(frame: CGRect(x:150, y:200, width:160, height:30)) mylabel.font = mylabel.font.withSize(25) mylabel.textColor = UIColor.black mylabel.text = "Test" viewControllers[0].view.addSubview(mylabel) } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() } func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? { let index = idList.firstIndex(of: viewController.restorationIdentifier!)! if (index > 0) { print("before") return storyboard!.instantiateViewController(withIdentifier: idList[index - 1]) } return nil } func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? { let index = idList.firstIndex(of: viewController.restorationIdentifier!)! if (index < idList.count - 1) { print("after") return storyboard!.instantiateViewController(withIdentifier: idList[index + 1]) } return nil } func pageViewController(_ pageViewController: UIPageViewController, didFinishAnimating finished: Bool, previousViewControllers: [UIViewController], transitionCompleted completed: Bool) { let index = idList.firstIndex(of: (pageViewController.viewControllers?.first!.restorationIdentifier)!) self.selectTab.selectedSegmentIndex = index! // let mylabel = UILabel(frame: CGRect(x:150, y:200, width:160, height:30)) // //mylabel.font = mylabel.font.withSize(25) // mylabel.textColor = UIColor.black // mylabel.text = "Test" // viewControllers[0].view.addSubview(mylabel) // print(index) } @IBAction func selectedTab(_ sender: UISegmentedControl) { switch sender.selectedSegmentIndex { case 0: pageViewController.setViewControllers([viewControllers[0]], direction: .reverse, animated: false, completion: nil) break case 1: pageViewController.setViewControllers([viewControllers[1]], direction: .reverse, animated: false, completion: nil) break case 2: pageViewController.setViewControllers([viewControllers[2]], direction: .forward, animated: false, completion: nil) break default: return } } }
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2019/04/16 12:56
2019/04/17 00:30