快速围绕圆形CAShapeLayer设置动画百分比标签

Question

我正在尝试制作this progressbar

除了百分比标签外，我已经完成了所有操作，这些标签应与CAShapelayer的中间对齐并为其设置动画。

fileprivate func makeTheProgress() {
    let center = middleView.center
    shapeLayer.lineWidth = 16

    let trackLayer = CAShapeLayer()
    trackLayer.lineWidth = 16


    let progressview = UIBezierPath(arcCenter: center, radius: 100, startAngle: -CGFloat.pi / 2, endAngle: 2 * CGFloat.pi, clockwise: true)



    //making track layer
    trackLayer.path = progressview.cgPath
    trackLayer.strokeColor = #colorLiteral(red: 1, green: 0.3098039216, blue: 0.6039215686, alpha: 1)
    trackLayer.strokeEnd = 1
    trackLayer.fillColor = UIColor.clear.cgColor
    view.layer.addSublayer(trackLayer)


    //making progress Layer
    shapeLayer.path = progressview.cgPath
    shapeLayer.strokeColor = #colorLiteral(red: 0, green: 0.8039215686, blue: 0.9843137255, alpha: 1)
    shapeLayer.strokeEnd = 0
    shapeLayer.fillColor = UIColor.clear.cgColor
    view.layer.addSublayer(shapeLayer)
}




func animateProgress(){

    let animation = CABasicAnimation(keyPath: "strokeEnd")
    if totalCount == 0 {
        animation.toValue = 1
    }else{
        animation.toValue = rightCount / totalCount
    }

    animation.duration = 1.5
    animation.fillMode = CAMediaTimingFillMode.forwards
    animation.isRemovedOnCompletion = false
    shapeLayer.add(animation, forKey: "progressAnimation")
}

我正在尝试添加一个CATextLayer并对其进行动画处理，还有更好的方法吗？！