Android App中使用Pull解析XML格式数据的使用示例

//1.第一步，创建解析工厂XmlPullParserFactory factory = XmlPullParserFactory.newInstance();//设置支持命名空间factory.setNamespaceAware(true);//2.生成parser对象     XmlPullParser parser = factory.newPullParser();//3.设置输入parser.setInput(new StringReader("<?xml version=/"1.0/" ?><poem><title>静夜思</title><author>李白</author><content>床前明月光，疑似地上霜，举头忘明月，低头思故乡</content></poem>"));//获取输入类型int eventType = parser.getEventType();while (eventType != XmlPullParser.END_DOCUMENT) {   if (eventType == XmlPullParser.START_DOCUMENT) {  Log.d("tag", "----"+parser.getName());  }   if (eventType == XmlPullParser.START_TAG) {  Log.d("tag", "----"+parser.getName());  }   if (eventType == XmlPullParser.TEXT) {  Log.d("tag", "----"+parser.getText());  }   if (eventType == XmlPullParser.END_TAG) {  Log.d("tag", "----"+parser.getName());  }  //不断的去更新  eventType = parser.next(); }

package com.android.xiong.documentpullxml;  import java.io.IOException; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.URL; import java.util.LinkedHashMap;  import org.xmlpull.v1.XmlPullParser; import org.xmlpull.v1.XmlPullParserException; import org.xmlpull.v1.XmlPullParserFactory;  import android.app.Activity; import android.app.ProgressDialog; import android.content.DialogInterface; import android.os.AsyncTask; import android.os.Bundle; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.TextView;  public class MainActivity extends Activity {    TextView showtxt;   Button btshow;    @Override   protected void onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     setContentView(R.layout.activity_main);     showtxt = (TextView) findViewById(R.id.showtxt);     btshow = (Button) findViewById(R.id.showxml);     btshow.setOnClickListener(new OnClickListener() {              @Override       public void onClick(View v) {         GetBaiduXmlBooks baiduxml=new GetBaiduXmlBooks();         baiduxml.execute("http://bcs.duapp.com/meinvlook/books.xml");       }     });   }    // 异步任务   class GetBaiduXmlBooks extends       AsyncTask<String, Integer, LinkedHashMap<String, String>> {      ProgressDialog progress;      // 初始化ProgressDialog     @Override     protected void onPreExecute() {       progress = new ProgressDialog(MainActivity.this);       progress.setTitle("提示！");       progress.setMessage("正在解析百度云存储的XML");       progress.setCanceledOnTouchOutside(false);       progress.setButton(ProgressDialog.BUTTON_NEUTRAL, "取消",           new DialogInterface.OnClickListener() {              @Override             public void onClick(DialogInterface dialog, int which) {               // 取消任务               GetBaiduXmlBooks.this.cancel(true);               progress.dismiss();             }           });       progress.show();     }      // 进行耗时操作     @Override     protected LinkedHashMap<String, String> doInBackground(String... params) {       String xmurl = params[0];       LinkedHashMap<String, String> map = new LinkedHashMap<String, String>();       URL url;       try {         url = new URL(xmurl);         HttpURLConnection connection = (HttpURLConnection) url             .openConnection();         connection.setConnectTimeout(10000);         connection.setRequestMethod("GET");         InputStream instream = connection.getInputStream();         // 获取xml解析器         XmlPullParser parser = XmlPullParserFactory.newInstance()             .newPullParser();         parser.setInput(instream, "UTF-8");         int type=parser.getEventType();         //开始解析xml文件         while (type!= XmlPullParser.END_DOCUMENT) {           if (type == XmlPullParser.START_TAG) {             // 获取开始标签             if (parser.getName().equals("书名")) {               //获取节点的值               map.put("书名", parser.nextText());             }             if (parser.getName().equals("价格")) {               map.put("价格", parser.nextText());             }             if (parser.getName().equals("作者")) {               map.put("作者", parser.nextText());             }             if (parser.getName().equals("性别")) {               map.put("性别", parser.nextText());             }             if (parser.getName().equals("年龄")) {               map.put("年龄",parser.nextText());             }           }           type=parser.next();         }       } catch (IOException e) {         e.printStackTrace();       } catch (XmlPullParserException e) {         e.printStackTrace();       }       return map;     }      @Override     protected void onPostExecute(LinkedHashMap<String, String> result) {        for (String txt : result.keySet()) {         showtxt.append(txt+":"+result.get(txt)+"/n");       }       progress.dismiss();            }    }    @Override   public boolean onCreateOptionsMenu(Menu menu) {     // Inflate the menu; this adds items to the action bar if it is present.     getMenuInflater().inflate(R.menu.main, menu);     return true;   }  } 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"   xmlns:tools="http://schemas.android.com/tools"   android:layout_width="match_parent"   android:layout_height="match_parent"   android:orientation="vertical"   tools:context=".MainActivity" >      <Button      android:id="@+id/showxml"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:text="@string/btshowxml"/>    <TextView     android:id="@+id/showtxt"     android:layout_width="wrap_content"     android:layout_height="wrap_content" />  </LinearLayout> <!-- 获取网络权限 --> <uses-permission android:name="android.permission.INTERNET"/>