ios - Swift - 创建自定义 View 的不同实例

Question

我正在开发一个应用程序，其中用户可以访问不同的列表。我将展示一些图片以便更好地理解。

这是我的“主菜单”，用户可以在其中将自定义单元格(“Main Wishlist”、“List1”、List2”，..)添加到UICollectionView >.

每个cell最终都应该“包含”自己的View，其中包含一个TableView。单击单元格即可显示 View :

这就是我让View出现的方式:

    @IBAction func createListButtonTapped(_ sender: Any) {

    // "Liste erstellen" button was tapped
    self.appDidEnterBackgroundHandler()

    if let txt = listNameTextfield.text {

        self.newListTextfield.resignFirstResponder()

        // append user-entered text to the data array
        self.theData.append(txt)
        self.imageData.append(self.image!)

        self.view.addSubview(self.theCustomWishlistView)
        // constrain CustomWishlistView
        self.theCustomWishlistView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: 120.0).isActive = true
        self.theCustomWishlistView.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: 0).isActive = true
        self.theCustomWishlistView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor, constant: 30.0).isActive = true
        self.theCustomWishlistView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor, constant: -30.0).isActive = true
        self.theCustomWishlistView.wishlistImage.image = self.image
        self.theCustomWishlistView.wishlistLabel.text = txt
        self.theCustomWishlistView.transform = CGAffineTransform(translationX: 0, y: 1000)
        self.view.bringSubviewToFront(containerView)


        // reload the collection view
        theCollectionView.reloadData()
        theCollectionView.performBatchUpdates(nil, completion: {
            (result) in
            // scroll to make newly added row visible (if needed)
            let i = self.theCollectionView.numberOfItems(inSection: 0) - 1
            let idx = IndexPath(item: i, section: 0)
            self.theCollectionView.scrollToItem(at: idx, at: .bottom, animated: true)

            // close (hide) the "New List" view
            self.closeButtonTappedNewList(nil)
        })
    }
}

问题:就像我之前所说的，应该为每个单元格创建一个单独的View，但目前每个cell都包含相同的customWishlistView。

这就是我创建 customWishlistView 的方式:

lazy var theCustomWishlistView: CustomWishlistView = {
    let v = CustomWishlistView()
    v.translatesAutoresizingMaskIntoConstraints = false
    v.backgroundColor = .darkGray
    v.layer.cornerRadius = 30
    return v
}()

Answer 1

改变

lazy var theCustomWishlistView: CustomWishlistView = {
    let v = CustomWishlistView()
    v.translatesAutoresizingMaskIntoConstraints = false
    v.backgroundColor = .darkGray
    v.layer.cornerRadius = 30
    return v
}()

到

func createCustomWishlistView() -> CustomWishlistView {
    let v = CustomWishlistView()
    v.translatesAutoresizingMaskIntoConstraints = false
    v.backgroundColor = .darkGray
    v.layer.cornerRadius = 30
    return v
}

并使用它

而不是self.theCustomWishlistView

为每个单元格创建它:

let theCustomWishlistView = createCustomWishlistView()
...