我已经用Xcode编程两年了，我遇到了一个关于在我的自定义滚动视图中以编程方式初始化的一系列UI的问题。不管出于什么原因，当点击时，他们的目标函数@objc func buttonPressed(_ sender: UITapGestureRecognizer)没有打印语句“Button pressed！“.我以前从未遇到过这个问题，我希望有人能给我指出正确的方向。我已经包含了所有相关的代码，如果这还不够的话，我很乐意把整个类的代码贴出来。

{
    scrollView.frame = CGRect(x: -10, y: bottomView.layer.position.y - 340, width: view.frame.width + 20, height: 200)
    scrollView.backgroundColor = UIColor.black.withAlphaComponent(0.2)
    scrollView.layer.zPosition = 350
    scrollView.layer.borderColor =  UIColor.systemGreen.cgColor
    scrollView.layer.borderWidth = 0.3
    scrollView.isUserInteractionEnabled = true

    let scrollContent = UIView()
    scrollContent.isUserInteractionEnabled = true
    scrollView.isUserInteractionEnabled = true

    let buttonHeight: CGFloat = 70
    let buttonSpacing: CGFloat = 15
    let numberOfButtonsPerRow = 6
    let numberOfRows = 2
    let padding: CGFloat = 20

    for row in 0..<numberOfRows {
        for col in 0..<numberOfButtonsPerRow {
            let button = UIButton()
          
            button.frame = CGRect(x: padding + CGFloat(col) * (buttonHeight + buttonSpacing),
                                  y: padding + CGFloat(row) * (buttonHeight + buttonSpacing),
                                  width: buttonHeight,
                                  height: buttonHeight)
        
            button.setTitleColor(.white, for: .normal)
            button.backgroundColor = .black
            button.layer.zPosition = 500
            button.isUserInteractionEnabled = true
          
            button.layer.borderColor =  UIColor.systemGreen.cgColor
            button.layer.borderWidth = 0.75
            button.layer.cornerRadius = 10
          
            button.isUserInteractionEnabled = true

            let tapGesture = UITapGestureRecognizer(target: self, action: #selector(buttonPressed(_:)))
                  button.addGestureRecognizer(tapGesture)
         
            let imageName = buttonImages[row * numberOfButtonsPerRow + col]
                  
            button.setImage(UIImage(named: imageName)?.withRenderingMode(.alwaysOriginal), for: .normal)
            scrollContent.addSubview(button)
            scrollContent.isUserInteractionEnabled = true
        }
    }

    let contentWidth = padding + CGFloat(numberOfButtonsPerRow) * (buttonHeight + buttonSpacing)
    let contentHeight = padding + CGFloat(numberOfRows) * (buttonHeight + buttonSpacing)
 
    scrollView.contentSize = CGSize(width: contentWidth, height: contentHeight)
 
    scrollView.addSubview(scrollContent)
     
    view.addSubview(scrollView)
}

@objc func buttonPressed(_ sender: UITapGestureRecognizer) {
    print("Button pressed!")
}

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