drawTextOnPath drawing text round a circle using hoffset?

The following code should draw text 0 - 23 around a circle, as in a clock face. This is done by setting the hoffet parameter to drawTextOnPath. But it only works for the top half of the circle, why is this, is it a bug. In fact it prints 0 - 12 around the circle but the 2 of the twelve is also missing.

Path circle = new Path();
circle.addCircle(0, 0, (float) radius, Direction.CW);
Shape   shape2 = new PathShape(circle, 1, 1);
shape2.resize(1, 1); // have to call this sets scaling
shape2.draw(canvas, timeFramePaint);

for (int hour=0; hour < 24; ++hour) {
    // Text
    drawHour(canvas, hour,  radius, textPaint, circle);
}

public void drawHour(Canvas canvas, int hour, double radius,
                 Paint paint, Path path) {
        Logger.getAnonymousLogger().info(String.valueOf(hour));
    float hOffset =  (float) (hour * radius * Constants.Tau / 24);
    final float vOffset = 0;
    canvas.drawTextOnPath(String.valueOf(ho开发者_运维问答ur), path, hOffset, vOffset, paint);
}

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It appears to be a bug after doing some testing and looking at the sdk source code. I could be wrong but I don't see how it's useful by design.

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Let's try to check size parent bitmap and size of circle. Here, I think may be the size of circle and parent bitmap size is the same. So text missing.