在for循环结束后绘制Uiview调用的方法

Question

我想制作一组圆圈。我创建了一个从UIView延伸的圆形类。这是我的抽奖方法。

override func draw(_ rect: CGRect) {
    // Drawing code
    self.drawCircle()
}
func drawCircle()
{
    print("centerX-----(RDcircleEnum.circleCenterX.getValues())")
    print("centerY-------(RDcircleEnum.circleCenterY.getValues())")
    print("Radius--------(RDcircleEnum.circleRadius.getValues())")
    let circlePath = UIBezierPath(arcCenter: CGPoint.init(x: RDcircleEnum.circleCenterX.getValues(), y: RDcircleEnum.circleCenterY.getValues()), radius: CGFloat(RDcircleEnum.circleRadius.getValues()), startAngle: CGFloat(0), endAngle:CGFloat(Double.pi * 2), clockwise: true)
    let shapeLayer = CAShapeLayer()
    shapeLayer.path = circlePath.cgPath
    //change the fill color
    shapeLayer.fillColor = UIColor.blue.cgColor
    //you can change the stroke color
    shapeLayer.strokeColor = UIColor.red.cgColor
    //you can change the line width
    shapeLayer.lineWidth = 3.0
    shapeLayer.path = circlePath.cgPath
    self.layer.mask = shapeLayer
}

然后在我的CircleManager班上，我像这样做

open func setupCirclestack(parentFrame:CGRect)->[Circle]
{
    var arrayCircles = Array<Any>()
    let arrayColor=[UIColor.yellow,UIColor.blue,UIColor.red]
    for i in 0...2//<CircleValues().numberOfCircles-1
    {
        let circle=self.getInnerCircle(currentFrame: parentFrame) as! Circle
        circle.backgroundColor=arrayColor[i]
        arrayCircles.append(circle)
        let cv=CircleValues.sharedInstance
        cv.radius=cv.radius-20
    }
    return arrayCircles as! [Circle]
}
func getInnerCircle(currentFrame:CGRect)->UIView
{
    print("New Radius------(CircleValues.sharedInstance.radius)")
    let circle=Circle.init(frame: currentFrame)
    return circle
}

在日志中，我看到了这样的

New Radius------Optional(187.0)
New Radius------Optional(167.0)
New Radius------Optional(147.0)
centerX-----207.0
centerY-------207.0
Radius--------127.0
centerX-----207.0
centerY-------207.0
Radius--------127.0
centerX-----207.0
centerY-------207.0
Radius--------127.0

仅在整个迭代完成后才调用。因此，所有圆圈都具有相同的半径。我该如何解决？请帮助我。

update

circle class

var innerCircleRadius:CGFloat = 187

在CircleManager中

for i in 0...2//<CircleValues().numberOfCircles-1
    {
      let circle=self.getInnerCircle(currentFrame: parentFrame) as! Circle
        circle.backgroundColor=arrayColor[i]
        arrayCircles.append(circle)
        circle.innerCircleRadius=circle.innerCircleRadius-20
        print("New Radius------(circle.innerCircleRadius)")

    }

Answer 1

对象应该保存自己的数据 - 只需将圆圈的radius作为Circle类本身的属性，以便绘制方法能够正确地绘制圆圈称为。

在您的更新代码中，只需将Circle Manager更改为以下内容：

var currentCircleRadius = CGFloat(180)
for i in 0...2//<CircleValues().numberOfCircles-1
    {
        let circle=self.getInnerCircle(currentFrame: parentFrame) as! Circle
        circle.backgroundColor=arrayColor[i]
        arrayCircles.append(circle)
        circle.innerCircleRadius = currentCircleRadius
        currentCircleRadius = currentCircleRadius - 20
        print("New Radius------(circle.innerCircleRadius)")
    }