func drawLineFromPointToPoint(startX: Int, toEndingX endX: Int, startingY startY: Int, toEndingY endY: Int, ofColor lineColor: UIColor, widthOfLine lineWidth: CGFloat, inView view: UIView) { let path = UIBezierPath() path.move(to: CGPoint(x: startX, y: startY)) path.addLine(to: CGPoint(x: endX, y: endY)) let shapeLayer = CAShapeLayer() shapeLayer.path = path.cgPath shapeLayer.strokeColor = lineColor.cgColor shapeLayer.lineWidth = lineWidth view.layer.addSublayer(shapeLayer) } 使用方法： drawLineFromPointToPoint(startX: Int, toEndingX: Int, startingY: Int, toEndingY: Int, ofColor: UIColor, widthOfLine: CGFloat, inView: UIView) ... 展开详请