UITableViewSwipeActions.swift

override func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
    let item = content[indexPath.item]
    switch item {
    case .iconAction:
        let action = UIContextualAction(style: .normal, title: item.rawValue, handler: { [weak self] (action, view, block) in
            self?.showAlert(item.rawValue)
        })
        action.backgroundColor = UIColor(hue: 0.11, saturation: 0.56, brightness: 0.48, alpha: 1.0)
        action.image = UIImage(named: "Icon")
        return UISwipeActionsConfiguration(actions: [action])
    case .multipleTrailingActions:
        let action1 = UIContextualAction(style: .normal, title: "Action1", handler: { [weak self] (action, view, block) in
            self?.showAlert("Action1")
        })
        action1.backgroundColor = UIColor(hue: 0.56, saturation: 0.56, brightness: 0.55, alpha: 1.0)
        let action2 = UIContextualAction(style: .normal, title: "Action2", handler: { [weak self] (action, view, block) in
            self?.showAlert("Action2")
        })
        action2.backgroundColor = UIColor(hue: 0.35, saturation: 0.33, brightness: 0.55, alpha: 1.0)
        return UISwipeActionsConfiguration(actions: [action1, action2])
    case .trailingAction:
        let action = UIContextualAction(style: .normal, title: item.rawValue, handler: { [weak self] (action, view, block) in
            self?.showAlert(item.rawValue)
        })
        return UISwipeActionsConfiguration(actions: [action])
    case .trailingDestructiveAction:
        let action = UIContextualAction(style: .destructive, title: item.rawValue, handler: { [weak self] (action, view, block) in
            self?.showAlert(item.rawValue)
        })
        return UISwipeActionsConfiguration(actions: [action])
    case .trailingTableViewDefaultAction:
        return nil
    case .leadingAction, .leadingDestructiveAction, .tooManyLeadingActions:
        return UISwipeActionsConfiguration(actions: []) // when returning nil, default actions are shown
    }
}