java - addArc() 使用路径默认边距/填充

Question

我使用 addArc() 创建了半圆，但圆弧和矩形之间存在奇怪的间隙，如下图所示。如何消除弧周围的间隙。

这是我的输出图像链接。

int saveCount = canvas.saveLayer(0, 0, getWidth(), getHeight(), null, Canvas.ALL_SAVE_FLAG);
    super.dispatchDraw(canvas);

    paint.setXfermode(pdMode);
    paint.setStrokeWidth(0);
    path.reset();
    path.setFillType(Path.FillType.INVERSE_WINDING);
    //path.moveTo(0, getHeight() - 100);
    int h = (getMeasuredHeight() / 2) - (getMeasuredHeight() /2) - 100;
    path.addArc(new RectF(50, h, getMeasuredWidth()-50, getMeasuredHeight()-50), 0, 180);
    path.close();


    canvas.drawPath(path, paint);

    canvas.restoreToCount(saveCount);
    paint.setXfermode(null);