Swift - create different instances of custom Views

问题

I am working on an app in which the user has access to different lists. I will show some pictures for a better understanding.

This is my "Main-Menue" where the user can add custom cells ("Main Wishlist", "List1", List2",..) to a UICollectionView.

Each cell should in the end "contain" its own View with a TableView inside of it. The View appears by clicking on the cell:

This is how I let the View appear:

    @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)
        })
    }
}

Problem: Like I previously said, there should be an individual View be created for each cell but at the moment every cell contains the same customWishlistView.

This is how I create my customWishlistView:

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

回答1:

Change

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

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

and use it

instead of self.theCustomWishlistView

create it for every cell:

let theCustomWishlistView = createCustomWishlistView()
...

来源：https://stackoverflow.com/questions/59161628/swift-create-different-instances-of-custom-views

标签

ios

swift

uitableview

uicollectionview