如何为mpandroidchart库自定义图表标签

3 回答

• 0

  使用大于或等于3.0.1库的版本并在代码中添加以下行：

  XAxis xAxis = chart.getXAxis();
  xAxis.setValueFormatter(new IndexAxisValueFormatter(getXAxisValues()));
  

  还创建以下方法：

  private ArrayList<String> getXAxisValues()
  {
      ArrayList<String> labels = new ArrayList<String> ();
  
      labels.add( "SUN");
      labels.add( "MON");
      labels.add( "TUE");
      labels.add( "WED");
      labels.add( "THU");
      labels.add( "FRI");
      labels.add( "SAT");
      return labels;
  }
  

  回复于 2024-04-27T01:03:02+08:00
• 1

  您可以使用自定义Formatter，您只需要创建一个类并设置轴

  XAxis xAxis = chart.getXAxis();
  xAxis.setValueFormatter(new DayFormatter());
  

  Formatter的自定义类

  public class DayFormatter implements IAxisValueFormatter {
  
  @Override
  public String getFormattedValue(float value, AxisBase axis) {
      return getDay((int) value);
  }
  
  String getDay(int day) {
      switch (day) {
          case 1:
              return "Monday";
          default:
              return "";
      }
  }}
  

  回复于 2024-04-27T01:03:02+08:00
• 1

  你可以这样做 .

  // creating data values
      ArrayList<Entry> entries = new ArrayList<>();
      entries.add(new Entry(30f, 0));
      entries.add(new Entry(12f, 1));
      entries.add(new Entry(12f, 2));
  
      // creating labels
      ArrayList<String> labels = new ArrayList<>();
      labels.add("Disability");
      labels.add("Environment");
      labels.add("Food and Farming");
  //        Colors
      Integer[] colors = new Integer[]{Color.GREEN, Color.YELLOW, Color.RED};
      //Set entries in PieDataSet
      PieDataSet pieDataSet = new PieDataSet(entries, "");
      pieDataSet.setDrawValues(false);
      pieDataSet.setColors(Arrays.asList(colors));
  //        pieDataSet.setColors(ColorTemplate.COLORFUL_COLORS); // set the color
  //        Set Data in PieData and PieChart
      PieData data = new PieData(labels, pieDataSet); // initialize PieData
      pieChartSupport.setCenterText(getString(R.string.chart_center_text));
      pieChartSupport.setData(data);
      pieChartSupport.setHoleRadius(80);
      pieChartSupport.setDrawSliceText(false);
      pieChartSupport.setDescription(getString(R.string.supports));
      pieChartSupport.setDrawSliceText(false);
  

  这是如何在MPAndroidChart Library提供的PieChart中添加天数 .

  回复于 2024-04-27T01:03:02+08:00