在Swift 4中使用swipe操作删除文件

import UIKit

class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
    var files: [String] = ["file1.txt", "file2.txt", "file3.txt"]

    override func viewDidLoad() {
        super.viewDidLoad()

        let tableView = UITableView(frame: view.bounds)
        tableView.dataSource = self
        tableView.delegate = self
        view.addSubview(tableView)
    }

    func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return files.count
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = UITableViewCell(style: .default, reuseIdentifier: nil)
        cell.textLabel?.text = files[indexPath.row]

        let swipeGesture = UISwipeGestureRecognizer(target: self, action: #selector(handleSwipeGesture(_:)))
        swipeGesture.direction = .left
        cell.addGestureRecognizer(swipeGesture)

        return cell
    }

    @objc func handleSwipeGesture(_ gestureRecognizer: UISwipeGestureRecognizer) {
        if gestureRecognizer.direction == .left {
            if let cell = gestureRecognizer.view as? UITableViewCell,
               let indexPath = tableView.indexPath(for: cell) {
                let fileToDelete = files[indexPath.row]
                // 执行删除文件的逻辑
                files.remove(at: indexPath.row)
                tableView.deleteRows(at: [indexPath], with: .fade)
            }
        }
    }
}