Androidx学习笔记（34）---新闻客户端之获取新闻xml文件并解析

来源：互联网发布：注射死刑知乎编辑：程序博客网时间：2024/05/19 22:25

1、根据xml的结点定义JavaBean

<newslist><news><title>黑马52期就业快报</title><detail>热烈祝贺黑马52期平均薪水突破13k</detail><comment>15687</comment><image>http://192.168.1.100:8080/images/6.jpg</image></news><news><title>程序员因写代码太乱被杀害</title><detail>凶手是死者同事，维护死者代码时完全看不懂而痛下杀手</detail><comment>16359</comment><image>http://192.168.1.100:8080/images/7.jpg</image></news></newslist>

JavaBean

public class News {private String title;private String detail;private String comment;private String imageUrl;@Overridepublic String toString() {return "News [title=" + title + ", detail=" + detail + ", comment="+ comment + ", imageUrl=" + imageUrl + "]";}public String getTitle() {return title;}public void setTitle(String title) {this.title = title;}public String getDetail() {return detail;}public void setDetail(String detail) {this.detail = detail;}public String getComment() {return comment;}public void setComment(String comment) {this.comment = comment;}public String getImageUrl() {return imageUrl;}public void setImageUrl(String imageUrl) {this.imageUrl = imageUrl;}}

2 解析代码

public class MainActivity extends Activity {List<News> newsList;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);getNewsInfo();}    //开辟子线程下载新闻private void getNewsInfo() {Thread t = new Thread(){@Overridepublic void run() {String path = "http://192.168.13.13:8080/news.xml";try {URL url = new URL(path);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod("GET");conn.setConnectTimeout(5000);conn.setReadTimeout(5000);//发送http GET请求，获取相应码if(conn.getResponseCode() == 200){InputStream is = conn.getInputStream();//使用pull解析器，解析这个流parseNewsXml(is);}} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}};t.start();}private void parseNewsXml(InputStream is) {XmlPullParser xp = Xml.newPullParser();try {xp.setInput(is, "utf-8");//对节点的事件类型进行判断，就可以知道当前节点是什么节点int type = xp.getEventType();News news = null;while(type != XmlPullParser.END_DOCUMENT){switch (type) {case XmlPullParser.START_TAG:if("newslist".equals(xp.getName())){newsList = new ArrayList<News>();}else if("news".equals(xp.getName())){news = new News();}else if("title".equals(xp.getName())){String title = xp.nextText();news.setTitle(title);}else if("detail".equals(xp.getName())){String detail = xp.nextText();news.setDetail(detail);}else if("comment".equals(xp.getName())){String comment = xp.nextText();news.setComment(comment);}else if("image".equals(xp.getName())){String image = xp.nextText();news.setImageUrl(image);}break;case XmlPullParser.END_TAG:if("news".equals(xp.getName())){                        //把news对象放着到集合中去newsList.add(news);}break;}//解析完当前节点后，把指针移动至下一个节点，并返回它的事件类型type = xp.next();}//发消息，让主线程设置listview的适配器，如果消息不需要携带数据，可以发送空消息handler.sendEmptyMessage(1);//用于测试 查看数据是否获取正确//for (News n : newsList) {//System.out.println(n.toString());//}} catch (Exception e) {e.printStackTrace();}}}

控制台输出效果

0 0