How to change item's ratio after created chartview?

[thepolygongo]

  firstItem = RKPieChartItem(ratio: 50, color: UIColor.orange)
     chartView = RKPieChartView(items: [firstItem])
     chartView.circleColor = .green
     chartView.translatesAutoresizingMaskIntoConstraints = false
     chartView.arcWidth = 10
     chartView.isIntensityActivated = false
     chartView.style = .round
     chartView.isTitleViewHidden = true
     chartView.isAnimationActivated = false
     self.view.addSubview(chartView)

button click function

    @IBAction func clickTest(_ sender: Any) {
        firstItem = RKPieChartItem(ratio: 80, color: UIColor.orange)
    }
    

this doens't work.

[melihayyildiz]

ablan star bebeğim

[Murodillo]

I have solution, but I think it is not good
firstly you should remove your chart view from its superview and initialize again

@IBAction func clickTest(_ sender: Any) {
chartView.removeFromSuperview()
firstItem = RKPieChartItem(ratio: 80, color: UIColor.orange)
chartView = RKPieChartView(items: [firstItem])
chartView.circleColor = .green
chartView.translatesAutoresizingMaskIntoConstraints = false
chartView.arcWidth = 10
chartView.isIntensityActivated = false
chartView.style = .round
chartView.isTitleViewHidden = true
chartView.isAnimationActivated = false
self.view.addSubview(chartView)
}