objective-c

세부

• Xcode 10.2 (10E125), 스위프트 5

전체 샘플 코드

TextFieldInTableViewCell

import UIKit

protocol TextFieldInTableViewCellDelegate: class {
    func textField(editingDidBeginIn cell:TextFieldInTableViewCell)
    func textField(editingChangedInTextField newText: String, in cell: TextFieldInTableViewCell)
}

class TextFieldInTableViewCell: UITableViewCell {

    private(set) weak var textField: UITextField?
    private(set) weak var descriptionLabel: UILabel?

    weak var delegate: TextFieldInTableViewCellDelegate?

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

    private func setupSubviews() {
        let stackView = UIStackView()
        stackView.distribution = .fill
        stackView.alignment = .leading
        stackView.spacing = 8
        contentView.addSubview(stackView)
        stackView.translatesAutoresizingMaskIntoConstraints = false
        stackView.topAnchor.constraint(equalTo: topAnchor, constant: 6).isActive = true
        stackView.bottomAnchor.constraint(equalTo: bottomAnchor, constant: -6).isActive = true
        stackView.leftAnchor.constraint(equalTo: leftAnchor, constant: 16).isActive = true
        stackView.rightAnchor.constraint(equalTo: rightAnchor, constant: -16).isActive = true

        let label = UILabel()
        label.text = "Label"
        stackView.addArrangedSubview(label)
        descriptionLabel = label

        let textField = UITextField()
        textField.textAlignment = .left
        textField.placeholder = "enter text"
        textField.setContentHuggingPriority(.fittingSizeLevel, for: .horizontal)
        stackView.addArrangedSubview(textField)
        textField.addTarget(self, action: #selector(textFieldValueChanged(_:)), for: .editingChanged)
        textField.addTarget(self, action: #selector(editingDidBegin), for: .editingDidBegin)
        self.textField = textField

        stackView.layoutSubviews()
        selectionStyle = .none

        let gesture = UITapGestureRecognizer(target: self, action: #selector(didSelectCell))
        addGestureRecognizer(gesture)
    }

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

extension TextFieldInTableViewCell {
    @objc func didSelectCell() { textField?.becomeFirstResponder() }
    @objc func editingDidBegin() { delegate?.textField(editingDidBeginIn: self) }
    @objc func textFieldValueChanged(_ sender: UITextField) {
        if let text = sender.text { delegate?.textField(editingChangedInTextField: text, in: self) }
    }
}

ViewController

import UIKit

class ViewController: UIViewController {

    private weak var tableView: UITableView?
    override func viewDidLoad() {
        super.viewDidLoad()
        setupTableView()
    }
}

extension ViewController {

    func setupTableView() {

        let tableView = UITableView(frame: .zero)
        tableView.register(TextFieldInTableViewCell.self, forCellReuseIdentifier: "TextFieldInTableViewCell")
        view.addSubview(tableView)
        tableView.translatesAutoresizingMaskIntoConstraints = false
        tableView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
        tableView.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
        tableView.leftAnchor.constraint(equalTo: view.leftAnchor).isActive = true
        tableView.rightAnchor.constraint(equalTo: view.rightAnchor).isActive = true
        tableView.rowHeight = UITableView.automaticDimension
        tableView.estimatedRowHeight = UITableView.automaticDimension
        tableView.tableFooterView = UIView()
        self.tableView = tableView
        tableView.dataSource = self

        let gesture = UITapGestureRecognizer(target: tableView, action: #selector(UITextView.endEditing(_:)))
        tableView.addGestureRecognizer(gesture)
    }
}

extension ViewController: UITableViewDataSource {

    func numberOfSections(in tableView: UITableView) -> Int { return 1 }
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { return 2 }
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "TextFieldInTableViewCell") as! TextFieldInTableViewCell
        cell.delegate = self
        return cell
    }
}

extension ViewController: TextFieldInTableViewCellDelegate {

    func textField(editingDidBeginIn cell: TextFieldInTableViewCell) {
        if let indexPath = tableView?.indexPath(for: cell) {
            print("textfield selected in cell at \(indexPath)")
        }
    }

    func textField(editingChangedInTextField newText: String, in cell: TextFieldInTableViewCell) {
        if let indexPath = tableView?.indexPath(for: cell) {
            print("updated text in textfield in cell as \(indexPath), value = \"\(newText)\"")
        }
    }
}

결과

답변

cell.accessoryView = textField;