Android TextView显示Html类解析的网页和图片及自定义标签用法示例

CharSequence richText = Html.fromHtml("<strong>萝卜白菜的博客</strong>--<a href='http://orgcent.com'>http://orgcent.com</a>");mTVText.setText(richText);//此行必须，否则超链接无法点击,ScrollingMovementMethod实现滚动条mTVText.setMovementMethod(LinkMovementMethod.getInstance());

final String html = "萝卜白菜的博客<img src='http://m3.img.libdd.com/farm3/115/BBE681F0CAFB16C6806E6AEC1E82D673_64_64.jpg'/><mytag color='blue'>自定义</mytag>";//处理未知标签,通常是系统默认不能处理的标签final Html.TagHandler tagHandler = new Html.TagHandler() {int contentIndex = 0;/*** opening : 是否为开始标签* tag: 标签名称* output:输出信息，用来保存处理后的信息* xmlReader: 读取当前标签的信息，如属性等*/public void handleTag(boolean opening, String tag, Editable output,          XMLReader xmlReader) {    if("mytag".equals(tag)) {      if(opening) {//获取当前标签的内容开始位置        contentIndex = output.length();        try {          final String color = (String) xmlReader.getProperty("color");        } catch (Exception e) {          e.printStackTrace();        }      } else {        final int length = output.length();        String content = output.subSequence(contentIndex, length).toString();        SpannableString spanStr = new SpannableString(content);        spanStr.setSpan(new ForegroundColorSpan(Color.GREEN), 0, content.length(), Spannable.SPAN_INCLUSIVE_EXCLUSIVE);        output.replace(contentIndex, length, spanStr);      }    }    System.out.println("opening:" + opening + ",tag:" + tag + ",output:" + output);}};//解析图片final Html.ImageGetter imageGetter = new Html.ImageGetter() {   public Drawable getDrawable(String source) {      //在此必须异步加载图片      Drawable d = null;      try {        InputStream is = new DefaultHttpClient().execute(new HttpGet(source)).getEntity().getContent();        Bitmap bm = BitmapFactory.decodeStream(is);        d = new BitmapDrawable(bm);        //setBounds(0, 0, bm.getWidth(), bm.getHeight());        d.setBounds(0, 0, 200, 300);      } catch (Exception e) {e.printStackTrace();}      return d;   }};richText = Html.fromHtml(html, imageGetter, tagHandler);mTVText.setText(richText);