이번 내용

샘플 앱

import UIKit

class ViewController: UIViewController {

    let tableView = UITableView()

    var count = Int()

    override func viewDidLoad() {
        super.viewDidLoad()

        tableView.frame = CGRect(x: view.frame.minX, y: view.frame.minY, width: view.frame.width, height: view.frame.height)
        tableView.register(CustomCell.self, forCellReuseIdentifier: "cell")
        view.addSubview(tableView)

        tableView.dataSource = self
    }

}

extension ViewController:UITableViewDataSource{

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

        return 100
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

        count = count + 1
        print(count)

        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! CustomCell

        if cell.textLabel?.text != ""{

            cell.detailTextLabel?.text = cell.textLabel?.text
        }

        cell.textLabel?.text = String(indexPath.row)

        return cell
    }

}

class CustomCell:UITableViewCell{

    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: .value1, reuseIdentifier: reuseIdentifier)

    }

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

    }

    override func prepareForReuse() {
        super.prepareForReuse()

        if textLabel?.text != ""{

            detailTextLabel?.text = ""
            detailTextLabel?.text = textLabel!.text 
        }
        backgroundColor = .systemGreen
        print("reuse")   
    }

}

끝