傳遞一個類的實例

Question

因此，我正在爲我的應用程序進行一些海關過渡，我有一個問題將自實例傳遞給呈現類的過渡代理。我知道問題與實例有關，因爲協議的方法沒有執行。

我想我錯過了一些東西，但我找不到。

的ViewController

class ViewController: UICollectionViewController, UICollectionViewDelegateFlowLayout { 

    let detailVC = DetailVC() 
    let animationController = AnimationController() 

    override func viewDidLoad() { 
     super.viewDidLoad() 
     collectionView?.delegate = self 
     collectionView?.dataSource = self 

     detailVC.transitioningDelegate = self 

     collectionView?.register(ControllerCell.self, forCellWithReuseIdentifier: "klk") 
     collectionView?.isPagingEnabled = false 
     collectionView?.contentInset = UIEdgeInsets(top: 0, left: 80, bottom: 0, right: 10) 
     let layout = collectionView?.collectionViewLayout as? UICollectionViewFlowLayout 
     layout?.scrollDirection = .horizontal 

    } 

    override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int { 
     return 5 
    } 

    override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { 
     let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "klk", for: indexPath) as! ControllerCell 
     return cell 
    } 

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize { 
     return CGSize(width: view.frame.width * 0.6, height: view.frame.height * 0.5) 
    } 

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat { 
     return 100 
    } 


    override func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) { 
     let cell = collectionView.cellForItem(at: indexPath) 
     animationController.originFrame = cell?.frame 
     present(DetailVC(), animated: true, completion: nil) 
    } 

} 

extension ViewController: UIViewControllerTransitioningDelegate { 

    func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? { 
     return animationController 
    } 
} 

DetailVC

class DetailVC: UIViewController { 

    var cellFrame: CGRect? 

    let label: UILabel = { 
     let lbl = UILabel() 
     lbl.textColor = .white 
     lbl.text = "Quitar" 
     lbl.frame = CGRect(x: 10, y: 10, width: 100, height: 100) 
     lbl.isUserInteractionEnabled = true 
     return lbl 
    }() 

    override func viewDidLoad() { 
     super.viewDidLoad() 
     view.addSubview(label) 
     view.backgroundColor = .blue 
     label.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(dismissing))) 
    } 

    func dismissing() { 
     dismiss(animated: true, completion: nil) 
    } 


} 

Answer 1

要設置在detailVC委託，然後你提出一個新的實例，這就是爲什麼你的委託方法不會被調用。

所以，我認爲你需要在此聲明present(DetailVC(), animated: true, completion: nil)