在Swift中将仅顶部边框添加到UIToolBar

我正在尝试使用“定义颜色”将顶部边框添加到UIToolBar。当前，我使用以下代码提供透明外观。工具栏看起来正常。但是，我在工具栏中得到一条黑色顶部边框线。我想将黑色边框更改为白色

    My Code:
    navigationController?.toolbar.setBackgroundImage(UIImage(), forToolbarPosition: UIBarPosition.any, barMetrics: UIBarMetrics.default)
    navigationController?.toolbar.barStyle = UIBarStyle.default
    navigationController?.toolbar.tintColor = UIColor.white
    navigationController?.toolbar.backgroundColor = UIColor(white: 0.6, alpha: 0.2)

    // To remove the black border line. If, I want to
    self.navigationController?.toolbar.clipsToBounds = true


   // I don't want to put a border around the UIToolbar like below code
    self.navigationController?.toolbar.layer.borderColor = UIColor.white.cgColor
    self.navigationController?.toolbar.layer.borderWidth = 0.2

提前感谢….

试试这个：

let path = UIBezierPath()
    path.move(to: CGPoint(x: mytabbr.bounds.minX, y: mytabbr.bounds.minY ))
    path.addLine(to: CGPoint(x: mytabbr.bounds.maxX, y: mytabbr.bounds.minY ))

    let shape = CAShapeLayer()

    shape.path = path.cgPath
    shape.strokeColor = UIColor.black.cgColor
    shape.fillColor = UIColor.clear.cgColor
    shape.lineWidth = 2
    shape.lineCap = kCALineCapRound

    mytabbr.layer.addSublayer(shape)

试试这个：

let path = UIBezierPath()
    path.move(to: CGPoint(x: mytabbr.bounds.minX, y: mytabbr.bounds.minY ))
    path.addLine(to: CGPoint(x: mytabbr.bounds.maxX, y: mytabbr.bounds.minY ))

    let shape = CAShapeLayer()

    shape.path = path.cgPath
    shape.strokeColor = UIColor.black.cgColor
    shape.fillColor = UIColor.clear.cgColor
    shape.lineWidth = 2
    shape.lineCap = kCALineCapRound

    mytabbr.layer.addSublayer(shape)

---

我只是找到了答案。简单地说，我在工具栏上方放置了一个发际线视图

  let lineView = UIView(frame: CGRect(x:0, y:0, width:view.frame.width, height:0.2))
  lineView.backgroundColor=UIColor.white.withAlphaComponent(0.6)
  self.navigationController?.toolbar.addSubview(lineView)

我使用下面的代码从工具栏中删除了黑色的现有边界线

 self.navigationController?.toolbar.clipsToBounds = true

---

上面的代码很好用，看起来也很不错。任何改进的答案都将受到欢迎。…

我只是想知道答案。简单地说，我在工具栏上方放置了一个发际线UIView

  let lineView = UIView(frame: CGRect(x:0, y:0, width:view.frame.width, height:0.2))
  lineView.backgroundColor=UIColor.white.withAlphaComponent(0.6)
  self.navigationController?.toolbar.addSubview(lineView)

我使用下面的代码从工具栏中删除了黑色的现有边界线

 self.navigationController?.toolbar.clipsToBounds = true

以上代码工作正常，看起来很棒。如有任何改进，将不胜感激