Why 'edit actions' are not appear ,but (_:editActionsForRowAt) is called - ios

Question

When I am swiping left, edit actions do not appear. But! All delegete's functions called (canEditRowAt and editActionsForRowAt) Why I can not swipe?
import UIKit
class HikingCustomLocationViewController: UIViewController {
//MARK: - Constants
private let DEFAULT_HEADER_FOOTER_VIEW_ID = "DefaultHeaderFooterViewId"
private let CUSTOM_LOCATION_CELL_ID = "CustomLocationCellId"
// MARK: - UI properties
private lazy var customLocationTableView: UITableView = {
let tableView = UITableView()
tableView.backgroundColor = ColorHelper.bckgDefaultBlue
tableView.separatorStyle = .singleLine
tableView.separatorColor = ColorHelper.bckgDefaultBlue
tableView.separatorInset = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
tableView.indicatorStyle = .white
tableView.backgroundColor = ColorHelper.bckgDefaultBlue
tableView.isHidden = true
// Delagates
tableView.delegate = self
tableView.dataSource = self
// Registration
let defaultHeaderFooterViewNib = UINib(nibName: "DefaultTableViewHeaderFooterView", bundle: nil)
tableView.register(defaultHeaderFooterViewNib, forHeaderFooterViewReuseIdentifier: DEFAULT_HEADER_FOOTER_VIEW_ID)
let customLocationViewCellNib = UINib(nibName: "PlacesTableViewCell", bundle: nil)
tableView.register(customLocationViewCellNib, forCellReuseIdentifier: CUSTOM_LOCATION_CELL_ID)
return tableView
}()
private lazy var userMessageLabel: UILabel = {
let label = UILabel()
label.font = FontHelper.body
label.textAlignment = .center
label.numberOfLines = 0
label.textColor = ColorHelper.bckgTextTextWhite
label.text = NSLocalizedString("PLACESNOTHINGADDED", comment: "")
label.isHidden = true
return label
}()
// MARK: - Dependencies
private lazy var messageBus = MessageBus.sharedInstance
private lazy var globalState = GlobalState.sharedInstance
// MARK: - Props
enum HikingCustomLocationProps {
case loading
case loaded(customLocationGroups: [(tourId: String, customLocations: [CustomLocation])])
}
private var props: HikingCustomLocationProps = .loading {
didSet {
view.setNeedsLayout()
}
}
override func viewWillLayoutSubviews() {
super.viewWillLayoutSubviews()
switch props {
case .loading:
customLocationTableView.isHidden = true
userMessageLabel.isHidden = true
case .loaded(let customLocationGroups):
if customLocationGroups.isEmpty {
customLocationTableView.isHidden = true
userMessageLabel.isHidden = false
} else {
customLocationTableView.isHidden = false
userMessageLabel.isHidden = true
}
customLocationTableView.reloadData()
}
}
// MARK: - Life cycle
override func viewDidLoad() {
super.viewDidLoad()
title = NSLocalizedString("PLACESTITLE", comment: "")
view.backgroundColor = ColorHelper.bckgDefaultBlue
setupMessageBusDelegates()
subscribeMessages()
view.addSubview(customLocationTableView)
view.addSubview(userMessageLabel)
setupConstraints()
if case .product(let appStoreId) = globalState.state {
messageBus.send(msg: GetCustomLocationsAction(appStoreId: appStoreId))
}
}
deinit {
unsubscribeMessages()
}
// MARK: - MessageBus
private var customLocationsReadyMessage: MessageBusDelegate<CustomLocationsReadyMessage>?
private func setupMessageBusDelegates() {
customLocationsReadyMessage = MessageBusDelegate<CustomLocationsReadyMessage>(closure: { [weak self] msg in
if case .product(let appStoreId) = self?.globalState.state {
if msg.appStoreId != appStoreId { return }
self?.props = .loaded(customLocationGroups: msg.customLocationsGroup)
}
if case .tour(let appStoreId, _, _) = self?.globalState.state {
if msg.appStoreId != appStoreId { return }
self?.props = .loaded(customLocationGroups: msg.customLocationsGroup)
}
})
}
private func subscribeMessages() {
messageBus.subscribe(closure: customLocationsReadyMessage)
}
private func unsubscribeMessages() {
messageBus.unsubscribe(closure: customLocationsReadyMessage)
}
// MARK: - Constraints
private func setupConstraints() {
customLocationTableView.translatesAutoresizingMaskIntoConstraints = false
customLocationTableView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor).isActive = true
customLocationTableView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor).isActive = true
customLocationTableView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor).isActive = true
customLocationTableView.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
userMessageLabel.translatesAutoresizingMaskIntoConstraints = false
userMessageLabel.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
userMessageLabel.widthAnchor.constraint(equalToConstant: 288).isActive = true
userMessageLabel.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: 16).isActive = true
}
}
// MARK: - UITableViewDelegate
extension HikingCustomLocationViewController: UITableViewDelegate, UITableViewDataSource {
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
if case .loaded(let customLocationGroups) = props {
guard
let headerView = tableView.dequeueReusableHeaderFooterView(withIdentifier: DEFAULT_HEADER_FOOTER_VIEW_ID) as? DefaultTableViewHeaderFooterView,
let group = customLocationGroups[safe: section]
else { return nil }
headerView.configure(title: ("\(NSLocalizedString("TOUR", comment: "")) \(group.tourId)"), description: nil)
headerView.contentView.backgroundColor = ColorHelper.bckgTableHeaderDarkBlue
return headerView
}
return nil
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.deselectRow(at: indexPath, animated: true)
if case .product(let appStoreId) = globalState.state {
if case .loaded(let customLocationGroups) = props {
guard
let group = customLocationGroups[safe: indexPath.section],
let cLocation = group.customLocations[safe: indexPath.row],
let tourId = Int(group.tourId)
else { return }
globalState.state = .tour(
appStoreId: appStoreId,
tourId: tourId,
mapSelectionState: .customLocation(id: cLocation.id))
let hikingTourContainerVC = HikingTourContainerViewController(
exitButtonTitile: NSLocalizedString("PLACESTITLE", comment: ""))
self.navigationController?.pushViewController(hikingTourContainerVC, animated: true)
}
}
}
func numberOfSections(in tableView: UITableView) -> Int {
if case .loaded(let customLocationGroups) = props {
return customLocationGroups.count
}
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if case .loaded(let customLocationGroups) = props {
guard let customLocations = customLocationGroups[safe: section] else { return 0 }
return customLocations.customLocations.count
}
return 0
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if case .loaded(let customLocationGroups) = props {
guard
let customLocations = customLocationGroups[safe: indexPath.section]?.customLocations,
let cell = tableView.dequeueReusableCell(withIdentifier: CUSTOM_LOCATION_CELL_ID) as? PlacesTableViewCell,
let cLocation = customLocations[safe: indexPath.row]
else { return UITableViewCell() }
cell.configure(noteText: cLocation.note, date: cLocation.date)
setSelectedBackgroundViewFor(cell)
return cell
}
return UITableViewCell()
}
func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
return true
}
func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
let deleteAction = UITableViewRowAction(style: .destructive, title: NSLocalizedString("DELETE", comment: ""), handler: { (rowAction, indexPath) in
print("Delete action")
})
return [deleteAction]
}
private func setSelectedBackgroundViewFor(_ cell: UITableViewCell) {
let selectedBackgroundView = UIView()
selectedBackgroundView.backgroundColor = ColorHelper.bckg3DefalutBlue
cell.selectedBackgroundView = selectedBackgroundView
}
}

Answer 1

The problem was in calling customLocationTableView.reloadData() inside viewWillLayoutSubviews(). After moving it out, (In my case, I move it to props' didSet) edit actions start to appear.