Question

我正在尝试将我的项目转换为Swift 3，并且已经处理了大部分错误，但是我在调用手势识别器时遇到了问题。这是我的代码：

func addGestureToView(toView: UIView) {
    let gesutereUp = Init(UISwipeGestureRecognizer(target: self, action: #selector(DemoViewController.swipeHandler(_:)))) {
      $0.direction = .Up
    }

    let gesutereDown = Init(UISwipeGestureRecognizer(target: self, action: #selector(DemoViewController.swipeHandler(_:)))) {
      $0.direction = .Down
    }
    toView.addGestureRecognizer(gesutereUp)
    toView.addGestureRecognizer(gesutereDown)
  }

  func swipeHandler(sender: UISwipeGestureRecognizer) {
    let indexPath = NSIndexPath(forRow: currentIndex, inSection: 0)
    guard let cell  = collectionView?.cellForItemAtIndexPath(indexPath) as? DemoCollectionViewCell else { return }

它给我和错误说明gestureUp和gestureDown都有＆＃34;没有成员＆＃39; swipeHandler＆＃39;＆＃34;

同样在行＆＃34;让indexPath ...＆＃34;我收到错误说＆＃34;参数标签＆＃39;（forRow，in section：）＆＃39;不匹配任何可用的重载＆＃34;

有人可以帮助解决Swift 3的转换问题吗？当我评论这些线条时，一切正常，所以这是最后一块。提前谢谢。

Answer 1

替换选择器中标签sender的下划线。

#selector(DemoViewController.swipeHandler(sender:))

关于索引路径，swift3中的新方法是：

NSIndexPath(row: currentIndex, section: 0)

Swift 3转换＆＃34;没有会员＆＃34;错误

1 个答案: