TouchsStart总是返回错误的UIView

我想检测我何时触摸到其他地方,而不是某个特定的位置 UIView .我在用 touchesBegan 然而,对于它来说,它总是打印“触摸在外面”(见下面的代码)。我错过了什么?

我从这里得到了帮助 post .

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    if let touch = touches.first {
        let hitView = self.view.hitTest(touch.location(in: self.view), with: event)
        if hitView === checkBackContainer {
            print("touch is inside")
        } else {
            print("touch is outside")
        }
    }
    super.touchesBegan(touches, with: event)
}

里面加了锚 ViewDidLoad 作用

private lazy var checkBackContainer = ImageUploadContainerView()

override func viewDidLoad(){
self.view.addSubview(checkBackContainer)
checkBackContainer.anchorCenterXToSuperview()
checkBackContainer.topAnchor.constraint(equalTo: checkFrontContainer.bottomAnchor, constant: 20).isActive = true
checkBackContainer.leftAnchor.constraint(equalTo: self.view.leftAnchor, constant: 25).isActive = true
checkBackContainer.rightAnchor.constraint(equalTo: self.view.rightAnchor, constant: -25).isActive = true
checkBackContainer.heightAnchor.constraint(equalTo: checkBackContainer.widthAnchor, multiplier: 0.42).isActive = true
checkBackContainer.layer.applySketchShadow(color: UIColor.white, alpha: 1.0, x: 0, y: 0.33, blur: 1, spread: 0, cornerRadius: 6)

let backTap = UITapGestureRecognizer(target: self, action: #selector(self.backContainerTapped(_:)))
checkBackContainer.addGestureRecognizer(backTap) }

编辑: ContainerView是一种习惯 UIView 其中有一些 UIStackView s UIlabel s和 UIImageView 它在里面。我发现这是因为一种习惯 UIView ,当我用常规的 UIView 1.它起作用了。