后端接口返回的a标签的数据，如：

"测试数据<a href='http://www.baidu.com'>测试测试</a>  测试测试<a href='http://www.baidu.com'>内容测试</a>"

需要显示，超链接用不同的颜色标注并且可以，用内置webview打开

代码实现如下,关键点：要移除自带的span，添加自己重写的，否则，默认会调用外部浏览器打开链接

 public void setTextShow(final Context context, String text) {
        Spanned htmlString = Html.fromHtml(text);
        if (htmlString instanceof SpannableStringBuilder) {
            SpannableStringBuilder spannableStringBuilder = (SpannableStringBuilder) htmlString;
            Object[] objs = spannableStringBuilder.getSpans(0, spannableStringBuilder.length(), URLSpan.class);
            for (Object obj : objs) {
                int start = spannableStringBuilder.getSpanStart(obj);
                int end = spannableStringBuilder.getSpanEnd(obj);
                //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) {
                        startactivity();
                    @Override
                    public void updateDrawState(TextPaint ds) {
                        //设置颜色
                        super.updateDrawState(ds);
                        ds.setColor(context.getResources().getColor(R.color._004EFF));
                        ds.setUnderlineText(false);
                }, start, end, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
            contentBottomView.setText(spannableStringBuilder);