Android学习札记47：TextView显示Html类解析的网页和图片及自定义标签

来源：互联网发布：djvu 知乎编辑：程序博客网时间：2024/06/11 01:54

1、TextView 显示 Html 类解析的网页

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());

PS：如果想同时让内容可滚动和超链接可点击，只要设置 LinkMovementMethod 即可，因为其继承了 ScrollingMovementMethod。

2、TextView 显示 Html 解析的图片和自定义标签

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);

转载自：

http://orgcent.com/android-textview-parse-html-image-tag/