在android中的圆形路径上绘制文本

Question

我需要在圆形路径上绘制文本.我试过这个drawTextOnPath()方法.但是对于像图像中的"肥沃窗口"这样的文本,文本会旋转并且不可读.

我用过的代码:

customPath2.addArc(mCircleRectF, 30F, 64.28F);
    customPaint2.setAntiAlias(true);
    customPaint2.setDither(true);
    customPaint2.setStrokeWidth(mCircleStrokeWidth);
    customPaint2.setColor(Color.parseColor("#93BE66"));
    customPaint2.setStyle(Paint.Style.STROKE);
    customPaint2.setStrokeCap(Paint.Cap.ROUND);
    canvas.drawPath(customPath2, customPaint2);

    titlePaint.setColor(Color.parseColor("#ffffff"));
    titlePaint.setAntiAlias(true);
    titlePaint.setTypeface(Typeface.MONOSPACE);  titlePaint.setLetterSpacing(0.07F);
    titlePaint.setTextAlign(Paint.Align.CENTER);
    titlePaint.setTextSize(35f);

    canvas.drawTextOnPath("FERTILE WINDOW", customPath2, 0, 8, titlePaint);

Answer 1

感谢评论的帮助，要“向外”绘制文本，请逆时针制作弧线。
在您的示例中，startAngle变为94.28，sweepAngle变为-64.28。

科特林：

val enclosingRect = RectF(0f, 0f, 200f, 200f)
val path = Path()
path.addArc(enclosingRect, 94.28f, -64.28f)
canvas.drawTextOnPath("FERTILE WINDOW", path, 0f, 0f, myPaint)

爪哇：

RectF enclosingRect = new RectF(0f, 0f, 200f, 200f);
Path path = new Path();
path.addArc(enclosingRect, 94.28f, -64.28f);
canvas.drawTextOnPath("FERTILE WINDOW", path, 0f, 0f, myPaint);

这是针对圆圈底部的文本（从0到180或从-180到-360度）。

对于180和360或0和度之间的角度，您需要顺时针-180绘制圆弧。