未在当前视图控制器内的子视图上调用滑动手势

Question

我展示了一个视图控制器，其中有一个子视图。我在子视图上添加了一个滑动手势。未调用滑动手势。相反，呈现的视图控制器试图关闭自己，即关闭。如何覆盖子视图而不是超级视图识别的滑动​​手势。当我在静态视图控制器上实现滑动时，它按预期工作。

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var viewSwipe: UIView!

    override func viewDidLoad() {
        super.viewDidLoad()

        let swipeUp = UISwipeGestureRecognizer(target: self, action: #selector(swipeUp(_:)))
        swipeUp.direction = UISwipeGestureRecognizer.Direction.up
        self.viewSwipe.addGestureRecognizer(swipeUp)

        let swipedown = UISwipeGestureRecognizer(target: self, action: #selector(swipeDown(_:)))
        swipedown.direction = UISwipeGestureRecognizer.Direction.down
        self.viewSwipe.addGestureRecognizer(swipedown)
    }

    @objc func swipeUp(_ gesture: UISwipeGestureRecognizer) {
        print("swiped up")
    }

    @objc func swipeDown(_ gesture: UISwipeGestureRecognizer) {
        print("swiped down")
    }
}

红色区域需要刷卡

Answer 1

Gesture仅在视图中添加，您还可以在手势上添加任何方向。这里我放了一个小例子，你可以参考这个代码来解决你的问题。

右方向取 1，左方向取 2

例子 ：

import UIKit

class ViewController: UIViewController,UIGestureRecognizerDelegate{

 @IBOutlet weak var viewGray: UIView!
 @IBOutlet weak var viewRed: UIView!

 override func viewDidLoad() {
     super.viewDidLoad()

   self.navigationController?.interactivePopGestureRecognizer?.delegate = self

   let directions: [UISwipeGestureRecognizer.Direction] = [.right, .left]
     for direction in directions {
        let gesture = UISwipeGestureRecognizer(target: self, action: #selector(handleSwipe(sender:)))
        gesture.direction = direction
        gesture.delegate = self
        self.viewRed.addGestureRecognizer(gesture)
     }
  }

  @objc func handleSwipe(sender: UISwipeGestureRecognizer) {
    print(sender.direction)
  }

   func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
       return true
   }

  func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldBeRequiredToFailBy otherGestureRecognizer: UIGestureRecognizer) -> Bool {
      return true
  }
}