在UITableViewController中向表视图添加左右边距

import UIKit

class CustomTableViewCell: UITableViewCell {
    // 添加需要显示的内容
}

class TableViewController: UITableViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 注册自定义的UITableViewCell类
        tableView.register(CustomTableViewCell.self, forCellReuseIdentifier: "CustomCell")
    }
    
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "CustomCell", for: indexPath) as! CustomTableViewCell
        
        // 配置单元格
        
        return cell
    }
    
    override func tableView(_ tableView: UITableView, leadingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
        let leadingAction = UIContextualAction(style: .normal, title: "左边距") { (action, view, completionHandler) in
            // 执行左边距的操作
            
            completionHandler(true)
        }
        
        let configuration = UISwipeActionsConfiguration(actions: [leadingAction])
        configuration.performsFirstActionWithFullSwipe = false
        
        return configuration
    }
    
    override func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
        let trailingAction = UIContextualAction(style: .normal, title: "右边距") { (action, view, completionHandler) in
            // 执行右边距的操作
            
            completionHandler(true)
        }
        
        let configuration = UISwipeActionsConfiguration(actions: [trailingAction])
        configuration.performsFirstActionWithFullSwipe = false
        
        return configuration
    }
}