Question

我不明白为什么滑动不起作用？我想我写的一切都正确吗？这是我的代码：

class ViewController: UIViewController, UITableViewDataSource, GetData, UISearchBarDelegate, UITableViewDelegate{

    //Soccuper des date pour les avoirs en milliseconde

    @IBOutlet weak var searchBar: UISearchBar!
    @IBOutlet weak var viewConstraint: NSLayoutConstraint!
    @IBOutlet weak var blurView: UIVisualEffectView!
    @IBOutlet weak var sideView: UIView!
    @IBOutlet weak var usersTableView: UITableView!

    //Variable
    public static let db: UserDatabase = UserDatabase();
    var users : Array<User> = Array();
    var filteredData: Array<User> = Array();
    var isSearching: Bool = false;


    override func viewDidLoad() {
        super.viewDidLoad()
        //--------Navigation Side menu--------------
        sideView.layer.shadowColor = UIColor.black.cgColor;
        sideView.layer.shadowOpacity = 0.3; //Opacité des ombres 0.8 de base
        sideView.layer.shadowOffset = CGSize(width: 3, height: 0);
        viewConstraint.constant = -290;
        //-------------------------------------

        //------------Searchbar----------------
        searchBar.barTintColor = .white;
        //-------------------------------------

        //----------TableView---------------
        usersTableView.dataSource = self; //Initialize table view
        usersTableView.delegate = self; //Pour le on click
        usersTableView.separatorStyle = .none
        //----------------------------------

        refreshList(); //On rafraichis la listView en mettant a jour les arraylist

        //Pour le seachbar on initialize ci dessous
        searchBar.delegate = self;

    }


    //----------------------Table View-----------------------

    func goToEditFromAlertView(user: User) {
        performSegue(withIdentifier: "addNewUser", sender: user)
    }

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

    func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
        let deleteAction = UITableViewRowAction(style: .normal, title: "Delete") { (rowAction, indexPath) in
            //TODO: Delete the row at indexPath here
        }
        deleteAction.backgroundColor = .red

        return [deleteAction]
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "userCell", for: indexPath) as? UserTableViewCell;

        cell?.delegate = self; //Pour lui permettre de recevoir un delegate
        cell?.view(with: users[indexPath.row]);

        cell?.myVC = self;

        //Pour changer la couleur de la cellule selectionné
        let bgColorView = UIView()
        bgColorView.backgroundColor = UIColor.white
        cell?.selectedBackgroundView = bgColorView

        return cell!;
    }

    func refreshList(){
        users.removeAll();
        users = ViewController.db.getData()
        filteredData = users
        usersTableView.reloadData()
    }

    func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String){
        let searchText = searchBar.text?.lowercased()

        users.removeAll();

        if(searchText == nil || searchText == "" || searchText?.count == 0){
            users = filteredData;
        }else{
            for u: User in filteredData{
                if((u.getName().lowercased().range(of: searchText!)) != nil){
                    users.append(u);
                    usersTableView.reloadData();
                }
            }
        }

        usersTableView.reloadData();
    }

    //-------------------------------------------------------

我使用customtableview单元格。

Answer 1

您需要添加此UITableView委托方法：

func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
    return true
}

顺便说一下，分号（;）在swift中是不必要的。

Answer 2

对于Swift 3＆amp;斯威夫特4：

您需要实现两个不同的委托。第一个是

func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
    return true
}

还要添加UITableViewDataSource tableView（：commit：forRowAt :)方法：

func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
  // Action here
  // In case of delete, you can simply do:
if editingStyle == .delete {
    //Remove item at relative position from datasource array
    //Reload tableview at the respective indexpath
  }
}

在tableview中滑动无法正常工作

2 个答案: