细胞中的 swift GestureRecognizer

Question

我想长按表格 View 单元格，但我收到错误:

UIGestureRecognizer.Type' does not have a member named 'state'

这是代码

 override func viewDidLoad() {
        super.viewDidLoad()

        var gesture: UILongPressGestureRecognizer = UILongPressGestureRecognizer(target: self, action: "longPressed:")
        gesture.minimumPressDuration = 2.0
        self.view.addGestureRecognizer(gesture)

        }

func longpressed() {

    if(UIGestureRecognizer.state == UIGestureRecognizerState.Ended){

        print("ended")
    } else if (UIGestureRecognizer.state == UIGestureRecognizerState.Began){

        print("began")


    }
}

是的，我已经创建了 Bridging-Header.h 并导入了此文件:

#import <UIKit/UIGestureRecognizerSubclass.h>

我想要 swift 教程而不是 Objective-C!

Answer 1

向您的 UITableView 添加手势识别器，例如

    var gestureRec = UILongPressGestureRecognizer(target: self, action: "didTap:")
    self.tableView.addGestureRecognizer(gestureRec)

实现一个 didTap 函数，它看起来像这样。

func didTap(sender : UIGestureRecognizer)
{
    if sender.state == .Began {
        var location = sender.locationInView(self.tableView)
        var indexPath = self.tableView.indexPathForRowAtPoint(location)
        var cell = self.tableView.cellForRowAtIndexPath(indexPath!)
    }
}

这应该有效。