Draw Text inside an Arc using canvas

I am working in an android application to draw a circle and divide them equally and bind text inside the divided portion in the circle(like pichart). I have drawn a circle and divided them equally, but I want to bind text inside the divided portion. Please look into my code and give a solution. Thanks in advance.

public class MainActivity extends Activity {
    /** Called when the activity is first created. */
    float values[] = { 130, 130, 130, 130, 130 };

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        LinearLayout linear = (LinearLayout) findViewById(R.id.linearlay);
        values = calculateData(values);
        linear.addView(new MyGraphview(this, values));
    }

    private float[] calculateData(float[] data) {

        float total = 0;
        for (int i = 0; i < data.length; i++) {
            total += data[i];
        }
        for (int i = 0; i < data.length; i++) {
            data[i] = 360 * (data[i] / total);
        }
        return data;

    }

    public class MyGraphview extends View {

        private Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);     
        private float[] value_degree;
        private int[] COLORS = { Color.YELLOW, Color.GREEN, Color.WHITE,
                Color.CYAN, Color.RED };
        RectF rectf = new RectF(10, 10, 300, 300);
        Rect rect = new Rect(10, 10, 300, 300);
        int temp = 0;
        String rotatedtext;
        Path path;

        public MyGraphview(Context context, float[] values) {
            super(context);
            path = new Path();
            value_degree = new float[values.length];
            for (int i = 0; i < values.length; i++) {
                value_degree[i] = values[i];
            }

            paint.setTextSize(16);
            rotatedtext = "