Mpandroidchart 文本未正确显示在折线图的 x 轴上

问题描述

我正在研究 Mpandroidchart.我创建了一个折线图并尝试在我的 xaxis 上放置字符串.

I am working on Mpandroidchart. I have created a line chart and tried to place strings on my xaxis.

final ArrayList<String> xAxisLabel = new ArrayList<>(Arrays.asList("March","April","May"));



private ArrayList<Entry> lineChartDataSet(){
    ArrayList<Entry> dataSet = new ArrayList<Entry>();

    dataSet.add(new Entry(1,40));
    dataSet.add(new Entry(2,10));
    dataSet.add(new Entry(3,15));    
    return  dataSet;


}

 lineDataSet = new LineDataSet(lineChartDataSet(),"data set");
 XAxis xAxis = lineChart.getXAxis();
    xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
    xAxis.setDrawGridLines(false);

    //String setter in x-Axis
    xAxis.setValueFormatter(new com.github.mikephil.charting.formatter.IndexAxisValueFormatter(xAxisLabel));
    xAxis.setGranularity(1f);
    xAxis.setGranularityEnabled(true);

输出

在上图中，您可以看到月份名称未正确放置.即 march 不显示，只显示 april 和 may.

In the above image, you can see that month names are not properly placed. i.e march is not displaying and only april and may are shown.

预期产出

我该怎么做?

任何帮助将不胜感激

推荐答案

在 MPAndroidChart v3.1.0 版中，您可以使用自定义的 ValueFormatter 代替 IndexAxisValueFormatter 并覆盖 >String getAxisLabel(float value, AxisBase axis) 方法，您可以在其中定义自己的逻辑来替换每个 X 值对应的字符串.基于您的数据集的示例如下所示:

Instead of IndexAxisValueFormatter in MPAndroidChart version v3.1.0 you can use a custom ValueFormatter and override String getAxisLabel(float value, AxisBase axis) method where you can define your own logic to replace for each X value its corresponding String. Example based on your data Set will be like below:

xAxis.setValueFormatter(new ValueFormatter() {
  @Override
  public String getAxisLabel(float value, AxisBase axis) {
     String label = "";
     if(value == 1)
       label = "March";
     else if(value == 2)
       label = "April";
     else if(value == 3)
       label = "May";
     return label;
   }
}); 

结果如下:

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