图表3.0 - 无法在BarChart中显示小数 - iOS Swift

Question

我将我的价值存储在核心数据中并在BarChart上显示.我的类别金额为8.5和420.10.

但条形图的显示是8和420.我应该如何设置十进制值？

var dataEntries: [BarChartDataEntry] = []

   for i in 0..<dataPoints.count {
     let value = values[i] as Double
     print("value=\(value)")
     let dataEntry = BarChartDataEntry(x: Double(i), y:value)
     dataEntries.append(dataEntry)
 }

let chartDataSet = BarChartDataSet(values: dataEntries, label: "Total Amount")
chartDataSet.colors = [.red, .yellow, .green, .blue, .brown]
chartDataSet.colors = ChartColorTemplates.joyful()
barChartView.xAxis.labelPosition = .bottom
barChartView.chartDescription?.text = ""
barChartView.xAxis.drawGridLinesEnabled = false
barChartView.leftAxis.drawLabelsEnabled = false
barChartView.leftAxis.granularityEnabled = true

let chartData = BarChartData()
chartData.addDataSet(chartDataSet)
barChartView.data = chartData

Answer 1

我得到了答案:

let format = NumberFormatter()
format.numberStyle = .decimal
let formatter = DefaultValueFormatter(formatter: format)
chartData.setValueFormatter(formatter)