我正在尝试为项目中的所有 ViewControllers 创建自定义头文件。下图是实际设计。

因此，我尝试使用Xib文件创建自定义视图，如下所示：

import UIKit

class HamburgrView: UIView {
    override init(frame: CGRect) {
        // 1. setup any properties here
        // 2. call super.init(frame:)
        super.init(frame: frame)
        // 3. Setup view from .xib file
        xibSetup()
    }
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        xibSetup()
    }
    override open func prepareForInterfaceBuilder() {
        super.prepareForInterfaceBuilder()
        xibSetup()
    }
    override func layoutSubviews() {

    }
    func xibSetup() {

       let  tempView = loadViewFromNib()
        // use bounds not frame or it'll be offset
        tempView.frame = bounds
        // Make the view stretch with containing view
        tempView.autoresizingMask = [.flexibleWidth,.flexibleHeight]
        // Adding custom subview on top of our view (over any custom drawing > see note below)
        addSubview(tempView)

    }

    func loadViewFromNib() -> UIView {
        let bundle = Bundle(for: type(of:self))
        let nib = UINib(nibName: "HamburgrView",bundle: bundle)

        // Assumes UIView is top level and only object in CustomView.xib file
        let view = nib.instantiate(withOwner: self,options: nil)[0] as! UIView
        return view
    }


}

我们不知道如何从 SafeArealayoutGuide 绘制带有曲线及其起始位置的汉堡菜单图标。

我尝试使用x位置为负-40的一个视图，并且使cornerRadius不能像上面的图像那样变得完美。

输出效果不好。

我的 ViewController 代码：

override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.

        let hamView = HamburgrView(frame: .zero)
        self.view.addSubview(hamView)
        hamView.translatesAutoresizingMaskintoConstraints = false
        NSLayoutConstraint.activate([
            hamView.topAnchor.constraint(equalTo: self.view.safeAreaLayoutGuide.topAnchor,constant: 0),hamView.leadingAnchor.constraint(equalTo: self.view.leadingAnchor,hamView.widthAnchor.constraint(equalToConstant: 120),hamView.heightAnchor.constraint(equalToConstant:  80)
            ])
    }

作为@sandip答案，我已经进行了如下更改：

func xibSetup() {

       let  tempView = loadViewFromNib()
        // use bounds not frame or it'll be offset
        tempView.frame = bounds
        // Make the view stretch with containing view
        tempView.autoresizingMask = [.flexibleWidth,.flexibleHeight]
        // Adding custom subview on top of our view (over any custom drawing > see note below)
        addSubview(tempView)
        let layer = CAShapelayer()
        layer.path = UIBezierPath.init(arcCenter: CGPoint(x: 0,y: self.center.y),radius: 50,startAngle: -1.5708,endAngle: 1.5708,clockwise: true).cgPath
        layer.fillColor = UIColor.red.cgColor
        self.layer.addSublayer(layer)
    }

输出看起来如下：