通过 ViewOutlineProvider 裁剪内容

clip 子 view 内容

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
    view.setOutlineProvider(new ViewOutlineProvider() {
        @Override
        public void getOutline(@Nullable View view, @Nullable Outline outline) {
            if (view == null || outline == null) {
                return;
            }
            view.setClipToOutline(true);
            int radius = ScreenUtil.dip2px(10);
            outline.setRoundRect(0, 0, view.getRight(), view.getBottom() + radius, radius);
        }
    });
}