override renderLegend(context: CGContext)

[SeRG1k17]

I created a subclass to draw the entry color:

class ColoredLegendEntry: LegendEntry {

    open var entryColor: NSUIColor?
    
    public init(label: String?,
                entryColor: NSUIColor?,...
//...

Override the renderLegend function:

class ColoredChartLegendRender: LegendRenderer {

    open override func renderLegend(context: CGContext) {
//...
                var entryColor = labelTextColor
                
                if let coloredEntry = e as? ColoredLegendEntry {
                    entryColor = coloredEntry .entryColor ?? labelTextColor
                }
//...

I created a class to use this new renderer:

open class ColoredPieChartView: PieChartView {
//...
}

What am I doing wrong?

[liuxuan30]

I don't have any issue with:

import Foundation

class ColoredChartLegendRender: LegendRenderer {

}

class MyPieChartView: PieChartView {
    internal override func initialize() {
        super.initialize()
        _legendRenderer = ColoredChartLegendRender(viewPortHandler: _viewPortHandler, legend: _legend)
    }
}

Read your error message and maybe restart your xcode or try to rebuild