I searched for this . but I didn't find anything useful. In the Documentation of LineAndPointFormatter class there is nothing mentioned about thickness .. Help me to solve this problem.
May this help you:
LineAndPointFormatter lineAndPointFormatter = new LineAndPointFormatter(Color.rgb(0, 0, 0), null, null);
//change the line width
Paint paint = lineAndPointFormatter.getLinePaint();
paint.setStrokeWidth(3);
lineAndPointFormatter.setLinePaint(paint);