[Development problem] The gradient color of HorizontalBarChart is invalid

PS: Invalid gradient is actually a BUG. It was not resolved until January 24, 2020. The current version 3.1.0 was packaged in 19, so you need to manually download the source code and import the project. I will not elaborate on importing the module.

Source address: https://github.com/PhilJay/MPAndroidChart

Use Fill:

import com.github.mikephil.charting.utils.Fill;
... ...
List<Fill> mGradientColors = new ArrayList<>();
... ...
BarDataSet mBarDataSet = new BarDataSet(mBarEntries, "");
mGradientColors.add(new Fill(new int[]{
    
    Color.parseColor("#FFd9ef1f"), Color.parseColor("#FFDEF723"), Color.parseColor("#00e3ff28")}));
mGradientColors.add(new Fill(new int[]{
    
    Color.parseColor("#FF0cb32f"), Color.parseColor("#FF1BD946"), Color.parseColor("#002bff5d")}));
mGradientColors.add(new Fill(new int[]{
    
    Color.parseColor("#FFb30c14"), Color.parseColor("#FFD91B36"), Color.parseColor("#00ff2b58")}));
mBarDataSet.setFills(mGradientColors);
mBarChart.setData(new BarData(mBarDataSet));
mBarChart.invalidate();

Another BUG! ! !

• In order to have a gradient effect, two conditions need to be met:
  1. Cannot getAxisLeft().setEnabled(false)
  2. Must setAxisMinimum(0)
• If you want to hide the shaft at the top, you can only:

  YAxis yAxis_top = mBarChart.getAxisLeft();
  yAxis_top.setAxisMinimum(0);
  yAxis_top.setDrawAxisLine(false);
  yAxis_top.setDrawGridLines(false);
  yAxis_top.setDrawLabels(false);