android开发去掉TextView使用html.from里面的a链接的下划线的方法

class ClickURLSpan(url: String) : URLSpan(url) {
    companion object {
        fun stripUnderline(textView: TextView) {
            textView.movementMethod = LinkMovementMethod.getInstance()
            if (textView.text is Spannable) {
                val spannable = textView.text as Spannable
                val allSpans = spannable.getSpans(0, spannable.length, URLSpan::class.java)//查找<a></a>对应的URLSpan
                for (span in allSpans) {
                    val start = spannable.getSpanStart(span)
                    val end = spannable.getSpanEnd(span)
                    spannable.removeSpan(span)
                    spannable.setSpan(ClickURLSpan(span.url), start, end, 0)//替换为自定义的ClickURLSpan
                }
                textView.autoLinkMask = 0
                textView.text = spannable
            }
        }
    }
    override fun updateDrawState(ds: TextPaint) {
        super.updateDrawState(ds)
        ds.linkColor = ContextCompat.getColor(BaseLib.getContext(), R.color.text_primary)//设置a链接颜色
        ds.isUnderlineText = false　　//去掉a链接下划线
    }
    override fun onClick(widget: View) {
        LogUtils.d("ClickURLSpan onClick:$url")
    }
}
使用方法：ClickURLSpan.stripUnderline(textview)