android - 为什么 drawPath 不起作用？

Question

我有 drawpath 的这段代码，但没有显示任何内容，我不明白为什么。

//i move the path's starting point somewhere up here to a point.
//get center x and y are the centers of a picture. it works when i
//do drawline and store the different starting points 
//but i want it to look continuous not like a lot of different
//lines

path.lineTo(a.getCenterX(), a.getCenterY());
path.moveTo(a.getCenterX(), a.getCenterY());


p.setStrokeWidth(50);
p.setColor(Color.BLACK);
canvas.drawPath(path,p);

提前致谢

Answer 1

一个新的 Paint 实例只填充路径。

要描边路径，设置绘画风格:

paint.setStyle(Paint.Style.STROKE);

如果您绘制的背景是黑色，请更改颜色，以便您可以看到油漆:

paint.setColor(Color.RED);   // something other than the background color

可选:

paint.setStrokeWidth(10);  // makes the line thicker