一些常用的代码块。后期会慢慢更新

来源：互联网发布：php过滤标签中的style 编辑：程序博客网时间：2024/05/04 05:13
<span style="font-size:18px;">/* 1. * 从流中解析新闻集合 * 使用pull解析器解析xml数据*/private static List<NewInfo> getNewListFromInputStream(InputStream is) throws Exception {XmlPullParser parser = Xml.newPullParser();parser.setInput(is, "utf-8");int eventType = parser.getEventType();List<NewInfo>  newInfoList = null;NewInfo newInfo = null;while(eventType != XmlPullParser.END_DOCUMENT ){String tagNme = parser.getName();//节点名称switch (eventType) {case XmlPullParser.START_TAG://<news>if("news".endsWith(tagNme)){newInfoList = new ArrayList<NewInfo>();}else if ("new".equals(tagNme)){newInfo = new NewInfo();}else if ("title".equals(tagNme)) {newInfo.setTitle(parser.nextText());}else if ("detail".equals(tagNme)) {newInfo.setDetail(parser.nextText());}else if ("comment".equals(tagNme)) {newInfo.setComment(Integer.valueOf(parser.nextText()));}else if ("image".equals(tagNme)) {newInfo.setImageUrl(parser.nextText());}break;case XmlPullParser.END_TAG:if("new".equals(tagNme)){newInfoList.add(newInfo);}break;default:break;}eventType = parser.next();}return newInfoList;  }  2.从输入流中读取数据（可转换为字符串）// 将流转换成字符串private static String getStringInputStream(InputStream is)throws IOException {ByteArrayOutputStream bos = new ByteArrayOutputStream();byte[] buffer = new byte[1024];int len = -1;while ((len = is.read(buffer)) != -1) {bos.write(buffer, 0, len);}/*is.close();return bos.toByteArray();  //从流中读出数据返回出去*/is.close();// String html = bos.toString();//把流中数据转换成字符串 采用的是UTF-8String html = new String(bos.toByteArray(), "GBK");// 在客户端更改，接收GBK编码格式，转换成字符串bos.close();return html;}  （读一串字符串，一串！用字符流比较方便。。字节流向字符流的转换。FileInputStream fis = new FileInputStream(path)1.先定义一个字符流对象。BufferedReader reader = new BufferedReader();()里面接收的是一个reader的对象，就是那个转换流BufferedReader reader = new BufferedReader(new InputStreamReader(fis));  3.//根据路径得到image图片(Bitmap) 加载网络图片 public static Bitmap getImage(String path){  HttpURLConnection conn = null; Bitmap bitmap = null; try {URL url = new URL(path);HttpURLConnection  httpconn  = (HttpURLConnection) url.openConnection();httpconn.connect();InputStream is =httpconn.getInputStream();bitmap  = BitmapFactory.decodeStream(is);is.close();httpconn.disconnect();} catch (Exception e) {e.printStackTrace();} return bitmap;  }  ------------------------------------------------------------------------protected void saveBitmapToSD(Bitmap bt) {String path = Environment.getExternalStorageDirectory();File file = new File(path, System.currentTimeMillis()+".jpg");System.out.println(Environment.getExternalStorageState()+"/Cool/"+"000000000000000000000000000");try {out = new FileOutputStream(file);bt.compress(Bitmap.CompressFormat.JPEG, 90, out);} catch (FileNotFoundException e) {e.printStackTrace();}try {out.flush();out.close();} catch (IOException e) {e.printStackTrace();}}         </span>
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