PieChartSample.java

      final PieChart pie = (PieChart) this.findViewById(R.id.pie_chart);

        float[] marks = {0.35f, 0.3f, 0.2f,0.15f};
        String[] subjects = { "Physics", "Maths", "Chemistry", "CS"};

        int[] colors = {Color.RED, Color.GREEN, Color.BLUE, Color.YELLOW};


        for (int i = 0; i < marks.length; i++) {

            int color = colors[i % colors.length];
            pie.addItem(subjects[i], marks[i], color);
        }