class TouchView extends View {
  public TouchView(Context context) {
    super(context);
    setBackgroundColor(Color.WHITE);
  }

  protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
	for (int i = 0; i < MAX_POINTERS; i++) {
      PointF point = points[i];
      if (point != null) {
        paint.setColor(getColor(i));
        canvas.drawCircle(point.x, point.y, radius, paint);
        String text = getActionText(i);
        float textWidth = paint.measureText(text);
        canvas.drawText(text, point.x - textWidth / 2, point.y - radius - calcDevicePixels(8), paint);
      }
    }
    canvas.drawText("Last pointer count: " + pointerCount, 10, calcDevicePixels(30), paintInfoText);
  }
}