我有个奇怪的问题。我在子视图中添加了一个基本的轻击手势识别器，但仅在喜欢时才起作用。有时，它可以在第二次点击时起作用，有时在第三次甚至更多次点击时起作用。但是，当我向手势识别器调用的功能中添加print("whatever")时，该功能始终在我第一次单击该子视图时起作用。

我该如何解决？

在这两个示例上出现相同的问题：

SubView：

let getgiftGestureRecognizer = UITapGestureRecognizer(target: self,action: #selector(self.getgift))
self.continueButton.addGestureRecognizer(getgiftGestureRecognizer)

        DispatchQueue.main.async {
            self.coverAnyUIElement(element: self.successView)
            let gift = Scnnode()
             gift.geometry = SCNBox(width: 1,height: 1,length: 1,chamferRadius: 0)

             //nahodne vygenerovat geometry,nebo barvu
             let ownedGeometries = UserDefaults.standard.array(forKey: "ownedGeometries")
             let ownedColors = UserDefaults.standard.array(forKey: "ownedColors")
             let notOwnedGeometriesCount = geometriesCount - ownedGeometries!.count
             let notOwnedColorsCount = colorsCount - ownedColors!.count

             if notOwnedGeometriesCount == 0{
                 //mam vsechny geometrie
                 //vygeneruju barvu

             }else if notOwnedColorsCount == 0{
                 //mam vsechny barvy
                 //vygeneruju geometrii
             }else if(notOwnedGeometriesCount == 0 && notOwnedColorsCount == 0){
                 //mam uplne vsechno

             }else{
                 //vygeneruj cokoliv
                 let random = Int.random(in: 0...10)
                 if random <= 3{

                     //vygeneruj geometrii
                 }else{
                     //vygeneruj barvu
                 }
             }
             print(self.generateColor())
             print(self.generateGeometry())



            self.chest.opacity = 1
             self.chest.position.y = -1.8
             self.world.addChildNode(self.chest)
             let viko = self.chest.childNode(withName: "viko",recursively: false)
             self.chest.addChildNode(gift)

            print("VLAKNO1: \(Thread.isMainThread)")
             viko?.runaction(SCNaction.rotateBy(x: 0,y: 0,z: -90/(180/CGFloat.pi),duration: 1),completionHandler: {
                print("VLAKNO2: \(Thread.isMainThread)")

                    let pohyb = SCNaction.move(by: SCNVector3(0,4,0),duration: 1)
                    gift.runaction(pohyb,completionHandler: {
                       print("VLAKNO3: \(Thread.isMainThread)")

                            self.showConfirmgiftButton()


                    })


             })
        }
    }

按钮：

confirmgiftButton.addTarget(self,action: #selector(acceptedgift),for: .touchUpInside)

@objc func acceptedgift(){
        DispatchQueue.main.async {
            UIButton.animate(withDuration: 0.2,animations: {
                self.confirmgiftButton.alpha = 0.9
            }) { (_) in
                UIButton.animate(withDuration: 0.2,animations: {
                    self.confirmgiftButton.alpha = 1
                }) { (_) in

                    //print("VLAKNO1: \(Thread.isMainThread)")
                    self.chest.runaction(SCNaction.fadeOut(duration: 0.5),completionHandler: {
                       // print("Vlakno: \(Thread.isMainThread)")
                        self.chest.removeFromParentNode()
                        self.moveToMenu()
                    })
                    //print("VLAKNO2: \(Thread.isMainThread)")
                    self.coverAnyUIElement(element: self.confirmgiftButton)
                }
            }
        }
    }