swift – 如何在ios-chart中为数据添加“％”

概述图表,这是我的代码： private func setChart(pieChartView: PieChartView, values: [Double]) { var dataEntries: [PieChartDataEntry] = [] let dataPoints = ["Mar","Apr","May"] for i in 0..<dataPoints.c 图表,这是我的代码：

private func setChart(pIEChartVIEw: PIEChartVIEw,values: [Double]) {    var dataEntrIEs: [PIEChartDataEntry] = []    let dataPoints = ["Mar","Apr","May"]    for i in 0..<dataPoints.count {        let dataEntry = PIEChartDataEntry(value: values[i],label: dataPoints[i])        dataEntrIEs.append(dataEntry)    }    let pIEChartDataSet = PIEChartDataSet(values: dataEntrIEs,label: "")    pIEChartDataSet.colors = [UIcolor(red: 47/255,green: 164/255,blue: 59/255,Alpha: 1.0),UIcolor(red: 17/255,green: 128/255,blue: 127/255,UIcolor.orange]    let pIEChartData = PIEChartData(dataSet: pIEChartDataSet)    pIEChartVIEw.data = pIEChartData    pIEChartVIEw.centerText = "Amount Spent"    pIEChartVIEw.chartDescription?.text = ""    pIEChartVIEw.usePercentValuesEnabled = true    pIEChartVIEw.legend.horizontalAlignment = .center}

如何在PIEChart数据中添加“％”？
NSNumberFormatter()不再可用

– – – – – – – -解 – – – – – – – –

我为有相同问题的每个人发布此解决方案.
我是从chart-ios githup得到的：

private func setChart(pIEChartVIEw: PIEChartVIEw,values: [Double]) {    var dataEntrIEs = [ChartDataEntry]()    let dataPoints = ["Mar",label: "")    let green = UIcolor(red: 47/255,Alpha: 1.0)    let blue = UIcolor(red: 17/255,Alpha: 1.0)    pIEChartDataSet.colors = [green,blue,.orange]    let pIEChartData = PIEChartData(dataSet: pIEChartDataSet)    let formatter = NumberFormatter()    formatter.numberStyle = .percent    formatter.maximumFractionDigits = 2    formatter.multiplIEr = 1.0    formatter.percentSymbol = "%"    pIEChartData.setValueFormatter(DefaultValueFormatter(formatter: formatter))    pIEChartVIEw.data = pIEChartData    pIEChartVIEw.centerText = "Amount Spent"    pIEChartVIEw.chartDescription?.text = ""    pIEChartVIEw.usePercentValuesEnabled = true    pIEChartVIEw.legend.horizontalAlignment = .center    pIEChartVIEw.drawEntryLabelsEnabled = false    pIEChartVIEw.holeRadiusPercent = 0.55    pIEChartVIEw.highlightPerTapEnabled = false    pIEChartVIEw.animate(yAxisDuration: 2.0,easingOption: .easeInBack)}

解决方法

请参考下面的代码,我添加了％.

import UIKitclass VIEwController: UIVIEwController {        @IBOutlet weak var pIEChartVIEw: PIEChartVIEw!        overrIDe func vIEwDIDLoad() {        super.vIEwDIDLoad()        // Do any additional setup after loading the vIEw,typically from a nib.        let months = ["Jan","Feb","Mar","May","Jun"]        let unitsSold = [20.0,4.0,6.0,3.0,12.0,16.0]        setChart(months,values: unitsSold)    }    func setChart(dataPoints: [String],values: [Double]) {        var dataEntrIEs: [ChartDataEntry] = []        for i in 0..<dataPoints.count {            let dataEntry = ChartDataEntry(value: values[i],xIndex: i)            dataEntrIEs.append(dataEntry)        }        let pIEChartDataSet = PIEChartDataSet(yVals: dataEntrIEs,label: "Units Sold")        let formatter = NSNumberFormatter()        formatter.numberStyle = .PercentStyle        formatter.maximumFractionDigits = 1        formatter.multiplIEr = 1.0        let pIEChartData = PIEChartData(xVals: dataPoints,dataSet: pIEChartDataSet)        pIEChartData.dataSet?.valueFormatter = formatter        pIEChartVIEw.data = pIEChartData        pIEChartVIEw.holecolor = UIcolor.clearcolor()      //  pIEChartVIEw.holeRadiusPercent = 0.95        pIEChartVIEw.centerText =  "Hello\nThis is PIE chart" pIEChartVIEw.usePercentValuesEnabled = true        var colors: [UIcolor] = []        for i in 0..<dataPoints.count {            let red = Double(arc4random_uniform(255))            let green = Double(arc4random_uniform(255))            let blue = Double(arc4random_uniform(255))            let color = UIcolor(red: CGfloat(red/255),green: CGfloat(green/255),blue: CGfloat(blue/255),Alpha: 1)            colors.append(color)        }        pIEChartDataSet.colors = colors    }    overrIDe func dIDReceiveMemoryWarning() {        super.dIDReceiveMemoryWarning()        // dispose of any resources that can be recreated.    }}

如果我可以帮助你,请告诉我.

有一个快乐的编码.

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