UITableViewCell选择处于编辑模式

Question

我正在制作一个自定义UIViewController，希望在点击UITableViewCell时显示一条消息。我创建了一个UITableView并设置属性

tableView.allowsSelectionDuringEditing = true

即使该属性已设置为true，也不会调用tableView（：didSelectRowAtIndexPath）来显示消息。为什么会出现这种情况，我该如何修复？

这是我的UITableViewController:

class GameListViewController: UIViewController, UITableViewDataSource, GameListViewDelegate, UITableViewDelegate
{
private var _games: [GameObject] = []
var tableView: UITableView {return (view as GameListView).tableView}
var gameListView: GameListView {return (view as GameListView) }
override func loadView()
{
    view =  GameListView(frame: UIScreen.mainScreen().bounds)
    gameListView.delegate = self
}
override func viewDidLoad()
{
    super.viewDidLoad()
    tableView.dataSource = self
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
    return _games.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
{
    var index: Int = indexPath.row         
    let currentGame = _games[index]
    var cell: UITableViewCell = UITableViewCell(style: UITableViewCellStyle.Default, reuseIdentifier: nil)
    cell.textLabel?.lineBreakMode = NSLineBreakMode.ByCharWrapping
    cell.textLabel?.numberOfLines = 2
    if currentGame.isFinished == true
    {
        cell.imageView?.image = UIImage(named: "Finished.png")
        cell.textLabel?.text = "Winner: Player(currentGame.playerMakingMove)nMissiles Launched: (currentGame.missileCount)"
    }
    else
    {
        cell.imageView?.image = UIImage(named: "Resume.png")
        cell.textLabel?.text = "Turn: Player(currentGame.playerMakingMove)nMissiles Launched: (currentGame.missileCount)"
    }
    return cell
}
/*Handles deleting the cells*/
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath)
{
    if (editingStyle == UITableViewCellEditingStyle.Delete)
    {
        var index: Int = indexPath.row
        _games.removeAtIndex(index)
        tableView.deleteRowsAtIndexPaths(NSArray(array: [indexPath]), withRowAnimation: UITableViewRowAnimation.Left)
    }
    tableView.reloadData()
}
/* Performs when a cell is touched */
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath)
{
    var index: Int = indexPath.row
    tableView.selectRowAtIndexPath(indexPath, animated: true, scrollPosition: UITableViewScrollPosition.None)
    println("inside tableView: didSelectRowAtIndexPath")
    var message = UIAlertView(title: "Row selected", message: "You have selected a row", delegate: nil, cancelButtonTitle: "Click ME!", otherButtonTitles: "no other buttons")
    message.show()
}
func makeNewGame()
{
    addGames(1)
    tableView.reloadData()
}
func addGames(gameNumber: Int)
{
    var p1 = Player()
    var p2 = Player()
    for var i = 0; i < gameNumber; i++
    {
        var randBool = Bool( round(drand48()))  // True/False
        var randPlayer:Int = Int( round( (drand48() + 1)) ) // 1 or 2
        var randMissleCount:Int = Int( arc4random_uniform(5000) + 1 )    //1 - 5001
        _games.append(GameObject(isFinished: randBool, playerMakingMove: randPlayer, missileCount: randMissleCount, player1: p1, player2: p2))
    }
}

}

这是我的UIView，它包含UITableView:

protocol GameListViewDelegate: class
{
func makeNewGame()
}
class GameListView: UIView, PictureButtonDelegate
{
var newGameButton: PictureButton!
var tableView: UITableView!
weak var delegate: GameListViewDelegate? = nil
override init(frame: CGRect)
{
    super.init(frame: frame)
    newGameButton = PictureButton(frame: CGRect(), fileName: "NewGame.png")
    newGameButton.backgroundColor = UIColor.grayColor()
    newGameButton.delegate = self
    newGameButton.setTranslatesAutoresizingMaskIntoConstraints(false)

    tableView = UITableView()
    tableView.allowsSelectionDuringEditing = true
    tableView.setTranslatesAutoresizingMaskIntoConstraints(false)
    self.addSubview(newGameButton)
    self.addSubview(tableView)
}
override func layoutSubviews()
{
    let views: [String : UIView] = ["button": newGameButton, "tableView": tableView]
    addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-[button]-|", options: .allZeros, metrics: nil, views: views))
    addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-[tableView]-|", options: .allZeros, metrics: nil, views: views))
    addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-(>=15,<=25)-[button]-[tableView]-|", options: .allZeros, metrics: nil, views: views))
}
func buttonPushed()
{
    delegate?.makeNewGame()
}
required init(coder aDecoder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
}
}

Answer 1

您必须为UITableView设置一个委托并实现func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath)。

您只设置dataSource，但不设置委托（仅为GameListView设置GameListViewDelegate）。

将GameListViewController中的viewDidLoad功能更改为：

override func viewDidLoad()
{
    super.viewDidLoad()
    tableView.dataSource = self
    tableView.delegate = self
}