image1.setExtension(new CDPathExtension());

class CDPathExtension implements ShapedImageView.PathExtension {

    @Override
    public void onLayout(Path path, int width, int height) {
        path.reset();
        path.addCircle(width / 2, height / 2, width / 8, Path.Direction.CW);
    }
}

public void setShape(int shapeMode, float radius);

public void setShapeMode(int shapeMode); // SHAPE_MODE_ROUND_RECT | SHAPE_MODE_CIRCLE

public void setShapeRadius(float radius);

public void setStroke(int strokeColor, float strokeWidth);

public void setStrokeColor(int strokeColor);

public void setStrokeWidth(float strokeWidth);