Question

我试图在集合视图单元格内进行滑动手势。我试图利用这个教程https://www.youtube.com/watch?v=BZ_Ke0dYpdw，但它不适用于收集单元格，我不知道如何使它在那里工作。这是我到目前为止的代码：

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "EventCell", for: indexPath) as! EventCell

cell.delegate = self
cell.index = indexPath.row
var eventsClass = PFObject(className: EVENTS_CLASS_NAME)
eventsClass = eventsArray[(indexPath as NSIndexPath).row]

//swipe gesture
let leftSwipe = UISwipeGestureRecognizer(target: self, action: #selector(self.handleSwipes(_:)))
let rightSwipe = UISwipeGestureRecognizer(target: self, action: #selector(self.handleSwipes(_:)))

leftSwipe.direction = .left
rightSwipe.direction = .right

cell.popoverView.addGestureRecognizer(leftSwipe)
cell.popoverView.addGestureRecognizer(rightSwipe)

   func handleSwipes(sender: UISwipeGestureRecognizer) {
    let eventCell = EventCell()

    if (sender.direction == .left) {
        print("Swipe Left")
    }

    if (sender.direction == .right) {
        print("Swipe Right")
        //let popoverView = CGPointMake(EventCell.popoverView.frame.origin.x + 50.0, self.popoverView.frame.origin.y);
       // popoverView.frame = CGRectMake(popoverView.x, popoverView.y, self.popoverView.frame.size.width, self.popoverView.frame.size.height)
        //popoverView.isHidden = true
    }

}

这给了我错误：

＆＃39;类型的价值＆＃39; Home＆＃39;没有会员＆＃39; handleSwipes＆＃39;＆＃39;在...上动作：#selector line

Answer 1

您需要在函数定义中添加@objc批注和_语法。如果不添加_，则其Objective-C名称将为functionNameWithSender:，而不是functionName。因此，您的函数定义应为：

@objc func handleSwipes(_ sender: UISwipeGestureRecognizer)

收集单元格中的滑动手势

1 个答案: