如何从饼图传奇中删除 danielgindi/Charts ios 的静态字符串 "DataSet"？

Question

我正在为 iOS/Swift 使用 danielgindi/Charts。饼图中显示了一个带有标签 "DataSet" 的额外图例条目，如下图所示：

当我追踪时，我发现 PieChartView 图例中的 LegendEntry 数组中有两个条目，即 PieChartView.legend.entries，而我的数组中只有一个对象。

代码如下：

let dataSet = PieChartDataSet()
    dataSet.drawIconsEnabled = false
    dataSet.setColor(AppColors.selectedMenuItem)
    dataSet.sliceSpace = 3
    dataSet.iconsOffset = CGPoint(x: 0, y: 40)
    dataSet.selectionShift = 5

    var totalRevenuePer:Double = 0.0

    _ = arrRevenue.map({ (objRevenue) -> Void in
        if let percentage = Double(objRevenue.per ?? "0.0"), percentage != 0.0{
            dataSet.append(PieChartDataEntry(value: percentage, label: "\((objRevenue.rev_center_name ?? "") + " " + objRevenue.revenue.currencyString())"))
            totalRevenuePer += percentage
        }
    })

    var colors = AppColors.TenderColors
    if totalRevenuePer < 100{ colors.append(.clear) }
    dataSet.colors = colors

    let data = PieChartData(dataSet: dataSet)
    data.setValueFormatter(PercentageFormatter())
    data.setValueFont(NSUIFont.systemFont(ofSize: 11))
    data.setValueTextColor(.white)

    pieChart.data = data
    pieChart.highlightValue(nil)
    let legend = pieChart.legend
    legend.textColor = .white
    legend.entries.last?.label = ""

    pieChart.animate(yAxisDuration: 1.4, easingOption: .easeInOutQuad)

    // Refresh chart with new data
    pieChart.notifyDataSetChanged()

感谢任何帮助，谢谢。

Answer 1

这是属性的 PieChartDataSet

如果您不自己设置，默认值为"DataSet"

let dataSet = PieChartDataSet()

// provide your own
dataSet.label = "My Label"

// or, no label
dataSet.label = ""

如何从饼图传奇中删除 danielgindi/Charts ios 的静态字符串 "DataSet"？

How to remove static string "DataSet" from Legends of Pie Chart for danielgindi/Charts ios?

ios

swift

ios-charts