MPAndroidChart PieChart how to change the center text to display the different color and font size

Question

Currently I use the MPAndroidChart from GITHUB and draw the piechart to display the two line text, each line has different color and different font size,I check the source codes

Answer 1

after study the source codes, i change the PieChartRenderer.java to change the mCenterTextPaint.setColor(Color.parseColor("#333333")); mCenterTextPaint.setTextSize(Utils.convertDpToPixel(20f)); mCenterTextPaint.setTextAlign(Align.CENTER);

then use the "\n" as a split to get the first line

   int index = centerText.indexOf("\n");

   Spannable tempSpannable = new SpannableString(centerText);
   tempSpannable.setSpan(new RelativeSizeSpan(0.75f), 0, index, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
   tempSpannable.setSpan(new ForegroundColorSpan(Color.parseColor("#999999")),
                        0, index, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

   // If width is 0, it will crash. Always have a minimum of 1
   mCenterTextLayout = new StaticLayout(tempSpannable, 0, centerText.length(),
                        mCenterTextPaint,
                        (int)Math.max(Math.ceil(mCenterTextLastBounds.width()), 1.f),
                        Layout.Alignment.ALIGN_NORMAL, 1.f, 0.f, false);

then get what i wanted is