试着调查一下 ——(UIEdgeInsets) layoutMargins; 在单元格上

我重写这个函数是UITableViewCell的子类，它对我来说工作正常

override func layoutSubviews() {
      super.layoutSubviews()
      //set the values for top,left,bottom,right margins
      let margins = UIEdgeInsets(top: 5, left: 8, bottom: 5, right: 8)
      contentView.frame = contentView.frame.inset(by: margins)
      contentView.layer.cornerRadius = 8
}

不需要使用一堆不同的部分。其他的答案使用框架insets和CGRect和图层…等等等等。不太好;使用自动布局和自定义UITableViewCell。在那个UITableViewCell中，不是在contentView中查看你的内容，而是创建一个新的containerView(一个UIView)，在contentView中查看容器视图，然后在容器视图中查看所有视图。

现在要创建空格，只需编辑容器视图的布局边距，如下所示:

class CustomTableViewCell: UITableViewCell {
    let containerView = UIView()
    let imageView = UIImageView()

    required init?(coder aDecoder: NSCoder) {super.init(coder: aDecoder)}

    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)

        containerView.translatesAutoResizingMaskIntoConstraints = false
        imageView.translatesAutoResizingMaskIntoConstraints = false
        contentView.addSubview(containerView)
        containerView.addSubview(imageView)

        contentView.layoutMargins = UIEdgeInsets(top: 15, left: 3, bottom: 15, right: 3)
        containerView.layoutMargins = UIEdgeInsets(top: 15, left: 17, bottom: 15, right: 17) // It isn't really necessary unless you've got an extremely complex table view cell. Otherwise, you could just write e.g. containerView.topAnchor

        let cg = contentView.layoutMarginsGuide
        let lg = containerView.layoutMarginsGuide
        NSLayoutConstraint.activate([
            containerView.topAnchor.constraint(equalTo: cg.topAnchor),
            containerView.leadingAnchor.constraint(equalTo: cg.leadingAnchor),
            containerView.trailingAnchor.constraint(equalTo: cg.trailingAnchor),
            containerView.bottomAnchor.constraint(equalTo: cg.bottomAnchor),
            imageView.topAnchor.constraint(equalTo: lg.topAnchor),
            imageView.leadingAnchor.constraint(equalTo: lg.leadingAnchor),
            imageView.trailingAnchor.constraint(equalTo: lg.trailingAnchor),
            imageView.bottomAnchor.constraint(equalTo: lg.bottomAnchor)
        ])
    }
}

我可以想到三种方法:

Create a custom table cell that lays out the view of the entire cell in the manner that you desire Instead of adding the image to the image view, clear the subviews of the image view, create a custom view that adds an UIImageView for the image and another view, perhaps a simple UIView that provides the desired spacing, and add it as a subview of the image view. I want to suggest that you manipulate the UIImageView directly to set a fixed size/padding, but I'm nowhere near Xcode so I can't confirm whether/how this would work.

明白吗?

TableViewCell - - - >

   override open var frame: CGRect {
    get {
        return super.frame
    }
    set {
        var frame =  newValue
        frame.size.height -= 2
        super.frame = frame
    }
}

为了增加行之间的间距，将使用第二个原型单元格。

在第二个原型单元格中添加一个不同的单元格标识符，然后添加一个空视图，并将其边缘约束到单元格的边缘，然后将emptyView的颜色设置为“clear”。

然后在代码中:

import UIKit

class YourViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
        
        @IBOutlet weak var yourTableView: UITableView!
        
        let yourArray = ["data1", "data2", "data3" /* so on */ ]

        let emptyTransparentRowHeight: CGFloat = 10
        
        override func viewDidLoad() {
            super.viewDidLoad()
    
            yourTableView.dataSource = self
            yourTableView.delegate = self
        }
            

        func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
            return (yourArray.count * 2)
        }
        
        func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
            
            guard indexPath.row % 2 == 0,
                let usableCell = tableView.dequeueReusableCell(withIdentifier: "Your First Cell Prototype Identifier") as? YourTableViewCellSubClass
            else {
                
                return tableView.dequeueReusableCell(withIdentifier: "The Second and Empty Cell Prototype Identifier")!
            }
      
            usableCell.Label?.text = yourArray[indexPath.row/2]
            
            return usableCell
    
        }
        
        func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
            if indexPath.row % 2 == 0 {
                return tableView.rowHeight
            }
            
            return self.emptyTransparentRowHeight
        }
        
    }