内置WebView打开TextView文本中的超链接

 mTvContent.setMovementMethod(LinkMovementMethod.getInstance()); //这一句是关键
 mTvContent.setText(setTextLinkOpenByWebView(getContext(),mContent));




public  SpannableStringBuilder setTextLinkOpenByWebView(final Context context, String answerString) {
        if (!TextUtils.isEmpty(answerString)) {
            Spanned htmlString = Html.fromHtml(answerString);
            if (htmlString instanceof SpannableStringBuilder) {
                SpannableStringBuilder spannableStringBuilder = (SpannableStringBuilder) htmlString;
                // 取得与a标签相关的Span
                Object[] objs = spannableStringBuilder.getSpans(0, spannableStringBuilder.length(), URLSpan.class);
                if (null != objs && objs.length != 0) {
                    for (Object obj : objs) {
                        int start = spannableStringBuilder.getSpanStart(obj);
                        int end = spannableStringBuilder.getSpanEnd(obj);
                        if (obj instanceof URLSpan) {
                            //先移除这个Span，再新添加一个自己实现的Span。
                            URLSpan span = (URLSpan) obj;
                            final String url = span.getURL();
                            spannableStringBuilder.removeSpan(obj);
                            spannableStringBuilder.setSpan(new ClickableSpan() {
                                @Override
                                public void onClick(View widget) {
                                    WebViewActivity.startWebView(context,url,"");
                                }
                            }, start, end, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
                        }
                    }
                }
                return spannableStringBuilder;
            }
        }
        return new SpannableStringBuilder(answerString);
    }