IOS8 TableViewController拉到刷新无法添加动作

Question

我试图在表格中添加"拉动刷新",但我不明白有什么问题.我添加了一个目标,但是当我使用它时没有任何事情发生

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    var refresh = UIRefreshControl()
    refresh.attributedTitle = NSAttributedString(string: "Pull to refresh")
    refresh.targetForAction("getServers", withSender: self)

    self.refreshControl = refresh
}

func getServers() {
        println("test")
}

它是 UITableViewController

当我拉它时,没有任何事情发生

Answer 1

使用 refresh.addTarget(self, action: "getServers", forControlEvents:.ValueChanged)

代替 refresh.targetForAction("getServers", withSender: self)