swift 从我的表格中删除一个单元格从一个按钮

我有麻烦从表中删除细胞，我试图创建一些协议，但它没有工作，因为我新的这种语言，我想不出很多解决方案。

extension CustomTableViewController: UITableViewDataSource {
    
    func tableView(_ tableView: UITableView,
                    numberOfRowsInSection section: Int) -> Int {
         return sneakers.count + 1
     }

     func tableView(_ tableView: UITableView,
                    cellForRowAt indexPath: IndexPath) -> UITableViewCell {
         
         
         if indexPath.row == sneakers.count {
             guard let cell = tableView.dequeueReusableCell(withIdentifier: "OrderSummaryView") as? OrderSummaryView else {
                 print("I'll never print")
                 return OrderSummaryView()
             }

             return cell
         }

         let product = sneakers[indexPath.row]

         guard let cell = tableView.dequeueReusableCell(withIdentifier: "ExampleCell") as? ExampleCell else {
             print("I'll never print")
             return ExampleCell()
         }

         print("Utilize cells")
         cell.configure(product: product)
         return cell
     }

  
}

这是我如何使用我的表格单元格

import UIKit


   final class ExampleCell: UITableViewCell {
    
    private let productImageView: UIImageView = .init(frame: .zero)
    private let categoryLabel: UILabel = .init(frame: .zero)
    private let nameLabel: UILabel = .init(frame: .zero)
    private let priceLabel: UILabel = .init(frame: .zero)
    private let sizeLabel: UILabel = .init(frame: .zero)
    private let colorLabel: UILabel = .init(frame: .zero)
    
    private let removeButton = UIButton()
    // Replace "transparent" with the name of your transparent image
    private let clearImage = UIImage(named: "Image-1")
   let qtyButton = UIButton()
    private let arrowQty = UIImage(named: "Arrow_Qty")
    private let wishButton = UIButton()

    
    override init(style: UITableViewCell.CellStyle,reuseIdentifier: String?) {
        super.init(style: .default,reuseIdentifier: "ExampleCell")
        
        print("New cell has been create")
        setupUI()
        setupConstraints()

    }
    
    // Init with coder is when the cell is instaciated via storyboard/XIB
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    func configure(product: Product) {
        productImageView.image = product.image
        categoryLabel.text = product.category
        nameLabel.text = product.name
        priceLabel.text = "\(product.price)€"
        sizeLabel.text = "Size: \(product.size)"
        colorLabel.text = "Color: \(product.color)"
    }

    
    private func setupUI() {
        selectionStyle = .none
        
        let array = [productImageView,
                     categoryLabel,
                     nameLabel,
                     priceLabel,
                     sizeLabel,
                     colorLabel,
                     removeButton,
                     qtyButton,
                     wishButton]
        
        array.forEach { view in
            view.translatesAutoresizingMaskIntoConstraints = false
            addSubview(view)
        }
        
        contentView.translatesAutoresizingMaskIntoConstraints = false
        
        productImageView.layer.cornerRadius = 16
        
        categoryLabel.font = FontStyle.uiS.baseUIFont
        categoryLabel.textColor = UIColor(named: "GreyScale_400")
        
        nameLabel.font = FontStyle.displayMBold.baseUIFont
        nameLabel.textColor = UIColor(named: "GreyScale_700")
        
        priceLabel.font = FontStyle.uiS.baseUIFont
        priceLabel.textColor = UIColor(named: "GreyScale_700")
        
        sizeLabel.font = FontStyle.uiXS.baseUIFont
        sizeLabel.textColor = UIColor(named: "GreyScale_700")
        
        colorLabel.font = FontStyle.uiXS.baseUIFont
        colorLabel.textColor = UIColor(named: "GreyScale_700")
        
        removeButton.setImage(clearImage, for: .normal)
        
        qtyButton.setTitle("Qty:1   ", for: .normal)
        qtyButton.setImage(arrowQty, for: .normal)
        qtyButton.semanticContentAttribute = .forceRightToLeft
        qtyButton.layer.cornerRadius = 16
        qtyButton.backgroundColor = UIColor(named: "GreyScale_White")
        qtyButton.setTitleColor(UIColor(named: "GreyScale_700"), for: .normal)
        qtyButton.layer.borderWidth = 1
        qtyButton.layer.borderColor = UIColor(named: "GreyScale_400")?.cgColor
        qtyButton.titleLabel?.font = FontStyle.uiM.baseUIFont
        
        wishButton.setTitle("Move to wishlist", for: .normal)
        wishButton.setTitleColor(UIColor(named: "GreyScale_700"), for: .normal)
        wishButton.titleLabel?.font = FontStyle.uiM.baseUIFont
        //underline wishButton
        let attributedTitle = NSAttributedString(string: "Move to wishlist", attributes: [.underlineStyle: NSUnderlineStyle.single.rawValue])
        wishButton.setAttributedTitle(attributedTitle, for: .normal)
    }
    
    private func setupConstraints() {
        NSLayoutConstraint.activate([
            
            contentView.widthAnchor.constraint(equalToConstant: 350),
            contentView.heightAnchor.constraint(equalToConstant: 242),
            
            productImageView.topAnchor.constraint(equalTo: contentView.topAnchor),
            productImageView.leadingAnchor.constraint(equalTo: contentView.leadingAnchor, constant: 20),
            productImageView.widthAnchor.constraint(equalToConstant: 106),
            productImageView.heightAnchor.constraint(equalToConstant: 114),
            
            categoryLabel.topAnchor.constraint(equalTo: contentView.topAnchor, constant: 18),
            categoryLabel.leadingAnchor.constraint(equalTo: productImageView.trailingAnchor, constant: 32),
            categoryLabel.widthAnchor.constraint(equalToConstant: 29),
            categoryLabel.heightAnchor.constraint(equalToConstant: 14),
            
            nameLabel.topAnchor.constraint(equalTo: categoryLabel.bottomAnchor, constant: 8),
            nameLabel.leadingAnchor.constraint(equalTo: productImageView.trailingAnchor, constant: 32),
            nameLabel.widthAnchor.constraint(equalToConstant: 159),
            nameLabel.heightAnchor.constraint(equalToConstant: 24),
            
            priceLabel.topAnchor.constraint(equalTo: nameLabel.bottomAnchor, constant: 8),
            priceLabel.leadingAnchor.constraint(equalTo: productImageView.trailingAnchor, constant: 32),
            priceLabel.widthAnchor.constraint(equalToConstant: 56),
            priceLabel.heightAnchor.constraint(equalToConstant: 14),
            
            sizeLabel.topAnchor.constraint(equalTo: priceLabel.bottomAnchor, constant: 16),
            sizeLabel.leadingAnchor.constraint(equalTo: productImageView.trailingAnchor, constant: 32),
            sizeLabel.widthAnchor.constraint(equalToConstant: 46),
            sizeLabel.heightAnchor.constraint(equalToConstant: 12),
            
            colorLabel.topAnchor.constraint(equalTo: priceLabel.bottomAnchor, constant: 16),
            colorLabel.leadingAnchor.constraint(equalTo: sizeLabel.trailingAnchor, constant: 16),
            colorLabel.widthAnchor.constraint(equalToConstant: 62),
            colorLabel.heightAnchor.constraint(equalToConstant: 12),
            
            removeButton.leadingAnchor.constraint(equalTo: contentView.trailingAnchor),
            removeButton.widthAnchor.constraint(equalToConstant: 12),
            removeButton.heightAnchor.constraint(equalToConstant: 12),
            
            qtyButton.topAnchor.constraint(equalTo: productImageView.bottomAnchor, constant: 32),
            qtyButton.bottomAnchor.constraint(equalTo: contentView.bottomAnchor, constant: 32),
            qtyButton.widthAnchor.constraint(equalToConstant: 106),
            qtyButton.leadingAnchor.constraint(equalTo: contentView.leadingAnchor,constant: 20),
            qtyButton.heightAnchor.constraint(equalToConstant: 64),
           
            wishButton.topAnchor.constraint(equalTo: colorLabel.bottomAnchor, constant: 56),
            wishButton.leadingAnchor.constraint(equalTo: qtyButton.trailingAnchor, constant: 128),
            wishButton.widthAnchor.constraint(equalToConstant: 116),
            wishButton.heightAnchor.constraint(equalToConstant: 16),
        ])
    }
}

这是我声明的东西里面的单元格与此我想删除按钮删除单元格从表和视图，你们能帮我吗？

您希望在单元格中添加一个按钮操作，然后添加一个闭包，这样单元格就可以告诉表格视图控制器该按钮被点击了。
所以，在ExampleCell中...
添加闭合：

final class ExampleCell: UITableViewCell {
    
    // closure
    var removeMe: ((ExampleCell) -> ())?

同样在ExampleCell中-在你“设置UI”之后，为你的按钮添加一个动作：

removeButton.addTarget(self, action: #selector(removeButtonTapped(_:)), for: .touchUpInside)

选择器Func可以看起来像这样：

@objc func removeButtonTapped(_ sender: UIButton) {
    print("Tapped remove button")

    // call the closure
    removeMe?(self)
}

现在，在控制器中，当您将cellForRowAt中的单元格出队时，请设置闭包：

let product = sneakers[indexPath.row]

    guard let cell = tableView.dequeueReusableCell(withIdentifier: "ExampleCell") as? ExampleCell else {
        print("I'll never print")
        return ExampleCell()
    }

    print("Utilize cells")
    cell.configure(product: product)
    
    // configure the closure
    cell.removeMe = { [weak self] aCell in
        guard let self = self,
              let idxPath = self.tableView.indexPath(for: aCell)
        else { return }
        
        print("Update data and remove cell from table view...")
        self.sneakers.remove(at: idxPath.row)
        self.tableView.deleteRows(at: [idxPath], with: .automatic)
    }
    
    return cell

顺便说一句--在单元格出队时不要使用guard let ...：

// don't do it like this
    //guard let cell = tableView.dequeueReusableCell(withIdentifier: "ExampleCell") as? ExampleCell else {
    //  print("I'll never print")
    //  return ExampleCell()
    //}

    // dequeue the cell like this
    let cell = tableView.dequeueReusableCell(withIdentifier: "ExampleCell", for: indexPath) as! ExampleCell

如果您错误地注册了表格视图单元格，您***希望***应用程序崩溃，以便您可以修复该问题。

swift 从我的表格中删除一个单元格从一个按钮

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