Android开发仿IOS滑动开关实现代码

width = w;    height = h;    left = top = 0;    right = width;    bottom = height * 0.8f;    cx = (right + left) / 2;    cy = (bottom + top) / 2;    RectF rectF = new RectF(left, top, bottom, bottom);    path.arcTo(rectF, 90, 180);    rectF.left = right - bottom;    rectF.right = right;    path.arcTo(rectF, 270, 180);    path.close();    circle_left = 0;    circle_right = bottom;    circle_width = circle_right - circle_left;    float circle_height = (bottom - top) / 2;    radius = circle_height * 0.9f;    borderwidth = (int) (2 * (circle_height - radius));    circle_cx = width - circle_height;