Swift - 自定义 UIButton 标题未显示

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如何解决Swift - 自定义 UIButton 标题未显示？

我想创建六边形按钮，如果它们以“蜂窝”方式显示，则不会重叠，并且只能选择正确的按钮。我找到了屏蔽 UIView here 的子类，并将它用于我的 UIbutton 类来进行屏蔽。它工作正常！

当我在视图中生成按钮时，按钮标题不可见。研究表明我需要使用 super.layoutSubvIEws() 能够显示标题的文本。我的打印方法显示标题已正确填充并且它与另一个对象类对应，但无论如何，标题不会显示。预期标题为“H”，打印日志显示标题存在于第一个按钮中：

GetTing category: category(date: 2021-07-11 10:29:45 +0000,categoryID: "C1",categorytitle: "Home",shorttitle: "H",categorycolor: UIExtendedSRGBcolorSpace   0.403922 0.643137 0.921569 1,isDefault: falsE)
setupPropertIEs short title: H
Short button title: H
button title: Optional("H")
GetTing category: category(date: 2021-07-11 10:15:50 +0000,categoryID: "C2",categorytitle: "",shorttitle: "",categorycolor: UIExtendedSRGBcolorSpace 0.960784 0.960784 0.960784 1,isDefault: truE)
setupPropertIEs short title: 
Short button title: 
button title: nil

我什至尝试向 UIbutton 子视图添加另一个标签，并以相同的方法将此标签置于最前面，但它也不会显示。

是否有另一种方法可以强制自定义按钮显示标题文本，或者我是否必须在与按钮相同的位置创建带有标题的 UILabel 并将其放置在按钮上方的图层中？这种方法不是首选...

是不是因为UIbutton被多边形遮住了？

六角按钮类：

class Hexabutton: UIbutton {

var path: UIBezIErPath!
var category: category!


init(cat: category) {
    super.init(frame: CGRect())
    self.category = cat
    self.setupPropertIEs()
    //self.layoutSubvIEws()
}

required init?(coder: NSCoder) {
    super.init(coder: coder)
    self.setupPropertIEs()
    //self.layoutSubvIEws()
    fatalError("init(coder:) has not been implemented")
}

overrIDe func awakeFromNib() {
    addTarget(self,action: #SELEctor(touchDown),for: .touchDown)
    self.setupPropertIEs()
    //self.layoutSubvIEws()
}

private func setupPropertIEs(){
    self.titleLabel?.Font = UIFont.boldSystemFont(ofSize: 10)
    self.settitlecolor(UIcolor.white,for: .normal)
    self.settitle(category.shorttitle,for: .normal)
    
    print("setupPropertIEs short title: \(category.shorttitlE)")

}

overrIDe func layoutSubvIEws() {
    super.layoutSubvIEws()
    self.titleLabel?.Font = UIFont.boldSystemFont(ofSize: 10)
    self.settitlecolor(UIcolor.white,for: .normal)
}

overrIDe func draw(_ rect: CGRect) {
  
    let linewidth: CGfloat = 5
    path = self.roundedpolygonPath(rect: self.bounds,linewidth: linewidth,sIDes: 6,cornerRadius: 10,rotationOffset: CGfloat(.pi / 2.0))

    let shapeLayer = CAShapeLayer()
    shapeLayer.strokecolor = category.categorycolor.cgcolor
    shapeLayer.fillcolor = category.categorycolor.cgcolor
    shapeLayer.path = path.cgPath
    layer.addSublayer(shapeLayer)
}

@objc func touchDown(button: Hexabutton,event: UIEvent) {
    if let touch = event.touches(for: button)?.first {
        let LOCATIOn = touch.LOCATIOn(in: button)

        if path.contains(LOCATIOn) == false {
            button.cancelTracking(with: nil)
        }
    }
}

public func roundedpolygonPath(rect: CGRect,linewidth: CGfloat,sIDes: NSInteger,cornerRadius: CGfloat,rotationOffset: CGfloat = 0) -> UIBezIErPath {
        let path = UIBezIErPath()
        let theta: CGfloat = CGfloat(2.0 * .pi) / CGfloat(sIDes) // How much to turn at every corner
        let wIDth = min(rect.size.wIDth,rect.size.height)        // WIDth of the square
        
        let center = CGPoint(x: rect.origin.x + wIDth / 2.0,y: rect.origin.y + wIDth / 2.0)
        
        // Radius of the circle that encircles the polygon
        // Notice that the radius is adjusted for the corners,that way the largest outer
        // dimension of the resulTing shape is always exactly the wIDth - linewidth
        let radius = (wIDth - linewidth + cornerRadius - (cos(theta) * cornerRadius)) / 2.0
        
        // Start drawing at a point,which by default is at the right hand edge
        // but can be offset
        var angle = CGfloat(rotationOffset)
        
        let corner = CGPoint(x: center.x + (radius - cornerRadius) * cos(anglE),y: center.y + (radius - cornerRadius) * sin(anglE))
        path.move(to: CGPoint(x: corner.x + cornerRadius * cos(angle + theta),y: corner.y + cornerRadius * sin(angle + theta)))
        
        for _ in 0..<sIDes {
            angle += theta
            
            let corner = CGPoint(x: center.x + (radius - cornerRadius) * cos(anglE),y: center.y + (radius - cornerRadius) * sin(anglE))
            let tip = CGPoint(x: center.x + radius * cos(anglE),y: center.y + radius * sin(anglE))
            let start = CGPoint(x: corner.x + cornerRadius * cos(angle - theta),y: corner.y + cornerRadius * sin(angle - theta))
            let end = CGPoint(x: corner.x + cornerRadius * cos(angle + theta),y: corner.y + cornerRadius * sin(angle + theta))
            
            path.addline(to: start)
            path.addQuadCurve(to: end,controlPoint: tip)
        }
        
        path.close()
        
        // Move the path to the correct origins
        let bounds = path.bounds
        let transform = CGAffinetransform(translationX: -bounds.origin.x + rect.origin.x + linewidth / 2.0,y: -bounds.origin.y + rect.origin.y + linewidth / 2.0)
        path.apply(transform)
        
        return path
    }
}

有人能指出我正确的方向吗，我错过了什么？谢谢

解决方法

override func draw(_ rect: CGRect) {
}

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