MPAndroidChart PieChart how to set label text?

Question

got the following code:

    Legend legend = mChart.getLegend();
    legend.setLabels(new String[]{\"aaaaa\", \"bbbbb\", \"ccccc\"});

This s

Answer 1

Thanks to vikas singh and other hints elsewhere, here's how I solved both coloring for the piechart and legend, for MPAndroidChart v3.0.3:

 private void visualizeAnalytics(ArrayList transactions) {

        PieChart graph = rootView.findViewById(R.id.graph);

        ArrayList entries = new  ArrayList<>();

        HashMap categoryFrequencyMap = new HashMap<>();

        for(Transaction T: transactions) {
            String category = T.getType().name();

           if(categoryFrequencyMap.containsKey(category)){
               categoryFrequencyMap.put(category, categoryFrequencyMap.get(category) + T.getAmount());
           }else {
               categoryFrequencyMap.put(category, T.getAmount());
           }
        }

        ArrayList categories = new ArrayList<>();

        int e = 0;
        for(String category: categoryFrequencyMap.keySet()){
            categories.add(e, category);
            entries.add(new PieEntry(categoryFrequencyMap.get(category), category));
            e++;
        }

        PieDataSet categories_dataSet = new PieDataSet(entries, "Categories");

        categories_dataSet.setSliceSpace(2f);
        categories_dataSet.setValueTextSize(15f);
        //categories_dataSet.setValueTextColor(Color.RED);/* this line not working */
        graph.setEntryLabelColor(Color.RED);

        categories_dataSet.setSelectionShift(10f);
        categories_dataSet.setValueLinePart1OffsetPercentage(80.f);
        categories_dataSet.setValueLinePart1Length(1f);
        categories_dataSet.setValueLinePart2Length(0.9f);
        categories_dataSet.setXValuePosition(PieDataSet.ValuePosition.OUTSIDE_SLICE);

        PieData pieData = new PieData(categories_dataSet);

        graph.setData(pieData);

        Legend legend = graph.getLegend();
        List legendEntries = new ArrayList<>();

        RandomColor randomColor = new RandomColor();
        int[] colors = randomColor.randomColor(categories.size());

        for (int i = 0; i < categories.size(); i++) {
            LegendEntry legendEntry = new LegendEntry();
            legendEntry.formColor = colors[i];
            legendEntry.label = categories.get(i);
            legendEntries.add(legendEntry);
        }

        categories_dataSet.setColors(colors);

        legend.setEnabled(false);
        legend.setCustom(legendEntries);

        Description description = new Description();
        description.setText("Analyzing Transaction Vol by Category");
        graph.setDescription(description);

        graph.animateY(5000);

        graph.invalidate(); // refresh
}

For the nice random colors, I sourced from this: https://github.com/lzyzsd/AndroidRandomColor