iOS Charts X Axis标签未全部显示

本文介绍了iOS Charts X Axis标签未全部显示的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我的应用程序管理一项具有四个季度周期的运动的得分。我的条形图将无法正确显示x轴标签。它仅显示Qtr 1和Qtr 3，而应显示每个条形对下的所有四个季度。 条形图的屏幕截图

My app manages the score of a sport that has 4 quarter periods. My bar chart will not display the x-axis labels correctly. It only shows Qtr 1 and Qtr 3, whereas it should show all 4 quarters under each respective pair of bars. Screen shot of Bar Chart

func setChart(dataPoints: [String], values1: [Double], values2: [Double]) { let legend = barChartView.legend legend.enabled = true legend.textColor = Style.labelTextColor let xaxis = barChartView.xAxis xaxis.drawGridLinesEnabled = true xaxis.labelPosition = .bottom xaxis.axisMinimum = 0 xaxis.centerAxisLabelsEnabled = true xaxis.granularityEnabled = true xaxis.labelCount = 4 xaxis.granularity = 2 xaxis.labelTextColor = Style.labelTextColor let leftAxisFormatter = NumberFormatter() leftAxisFormatter.maximumFractionDigits = 1 let yaxis = barChartView.leftAxis yaxis.spaceTop = 0.35 yaxis.axisMinimum = 0 yaxis.drawGridLinesEnabled = true yaxis.labelTextColor = Style.labelTextColor yaxis.gridColor = Style.labelTextColor yaxis.zeroLineColor = Style.labelTextColor yaxis.axisLineColor = Style.labelTextColor barChartView.rightAxis.enabled = false barChartView.noDataText = "You need to provide data for the chart." barChartView.chartDescription?.text = nil var dataEntries1: [BarChartDataEntry] = []; var dataEntries2: [BarChartDataEntry] = [] for i in 0..<dataPoints.count { let dataEntry1 = BarChartDataEntry(x: Double(i), y: values1[i]) dataEntries1.append(dataEntry1) let dataEntry2 = BarChartDataEntry(x: Double(i), y: values2[i]) dataEntries2.append(dataEntry2) } let chartDataSet1 = BarChartDataSet(values: dataEntries1, label: gCurrentMatch.teamA) let chartDataSet2 = BarChartDataSet(values: dataEntries2, label: gCurrentMatch.teamB) chartDataSet1.colors = [Style.chartColorA]; chartDataSet1.valueColors = [Style.labelTextColor] chartDataSet2.colors = [Style.chartColorB]; chartDataSet2.valueColors = [Style.labelTextColor] let dataSets: [BarChartDataSet] = [chartDataSet1, chartDataSet2] let chartData = BarChartData(dataSets: dataSets) let groupSpace = 0.3 let barSpace = 0.05 let barWidth = 1.0 // (0.3 + 0.05) * 2 + 0.3 = 1.00 -> interval per "group" let groupCount = self.qtr.count chartData.barWidth = barWidth let gg = chartData.groupWidth(groupSpace: groupSpace, barSpace: barSpace) barChartView.xAxis.axisMaximum = Double(0) + gg * Double(groupCount) barChartView.xAxis.valueFormatter = IndexAxisValueFormatter(values: dataPoints) chartData.groupBars(fromX: Double(0), groupSpace: groupSpace, barSpace: barSpace) barChartView.notifyDataSetChanged() barChartView.data = chartData //chart animation barChartView.animate(yAxisDuration: 0.5, easingOption: .linear) }

dataPoints是一个包含 Qtr 1， Qtr 2等的字符串数组。

dataPoints is a string array containing "Qtr 1", "Qtr 2" etc...

我不知道为什么它不起作用。

I cannot work out why it is not working.

推荐答案

在xaxis格式中使用以下代码：

use the following code in your xaxis formatting :

xaxis.setLabelCount(4, force: true)