android 解析 Rss xml 例子

【核心代码】

xml：

<?xml version="1.0" encoding="utf-8"?>
<rss>
<item>

<id>1</id>
<title>Image 1</title>
<desc>Whether it's made with soy byproducts, milk, or clay, these natural wall color options are healthy for your home.</desc>
<pubDate>22/03/2012</pubDate>
<link>https://www.dropbox.com/s/jpqsvse4xx9qt96/image1.jpg?dl=1</link>
</item>

<item>
<id>2</id>
<title>Image 2</title>
<desc></desc>
<pubDate>23/03/2012</pubDate>
<link>https://www.dropbox.com/s/n29704f65zigty7/image2.jpeg?dl=1</link>
</item>

<item>
<id>3</id>
<title>Image 3</title>
<desc></desc>
<pubDate>27/03/2012</pubDate>
<link>https://www.dropbox.com/s/1l3qoojbi4drqsd/image3.jpeg?dl=1</link>
</item>

<item>
<id>4</id>
<title>Image 4</title>
<desc>Natural paints are generally more expensive than conventional paints and aren’t always widely available, but can be ordered online.</desc>
<pubDate>29/03/2012</pubDate>
<link>https://www.dropbox.com/s/f9n3u3d5okk9x2v/image4.jpg?dl=1</link>
</item>
</rss>

code：

DOMParser.java  


package com.samir;


import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
public class DOMParser {
 Bean objItem;
 List<Bean> listArray;


 public List<Bean> getData(String url) {


  try {
   listArray = new ArrayList<Bean>();
   DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
   DocumentBuilder db = dbf.newDocumentBuilder();
   Document doc = db.parse(new URL(url).openStream());
   doc.getDocumentElement().normalize();


   NodeList nList = doc.getElementsByTagName("item");
   for (int temp = 0; temp < nList.getLength(); temp  ) {


    Node nNode = nList.item(temp);
    if (nNode.getNodeType() == Node.ELEMENT_NODE) {
     Element eElement = (Element) nNode;
     objItem = new Bean();
     objItem.setId(getTagValue("id", eElement));
     objItem.setTitle(getTagValue("title", eElement));
     objItem.setDesc(getTagValue("desc", eElement));
     objItem.setPubDate(getTagValue("pubDate", eElement));
     objItem.setLink(getTagValue("link", eElement));
     listArray.add(objItem);
    }
   }
  } catch (Exception e) {
   e.printStackTrace();
  }


  return listArray;
 }
 private static String getTagValue(String sTag, Element eElement) {
  NodeList nList = eElement.getElementsByTagName(sTag).item(0)
    .getChildNodes();
  if (eElement.getNodeType() == Node.ELEMENT_NODE) {
   if (nList != null && nList.getLength() > 0) {
    return nList.item(0).getNodeValue();
   }
  }
  return null;
 }
}

MainActivity.java

package com.samir;

import java.util.List;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {
 private ProgressDialog pDialog;
 private String rssFeed = "https://www.dropbox.com/s/t4o5wo6gdcnhgj8/imagelistview.xml?dl=1";
 private TextView textview;
 private List<Bean> itemsList;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);

  textview = (TextView) findViewById(R.id.textView1);
 }

 public void doParsing(View v) {

  if (isNetworkAvailable()) {
   textview.setText("Loading...Please wait...");
   new AsyncData().execute(rssFeed);
  } else {
   showToast("No Network Connection!!!");
  }
 }

 class AsyncData extends AsyncTask<String, Void, Void> {

  @Override
  protected void onPreExecute() {
   pDialog = new ProgressDialog(MainActivity.this);
   pDialog.setTitle("Loading....");
   pDialog.setMessage("Please wait...");
   pDialog.show();
   super.onPreExecute();
  }

  @Override
  protected Void doInBackground(String... params) {
   itemsList = new DOMParser().getData(params[0]);
   return null;
  }

  @Override
  protected void onPostExecute(Void result) {
   super.onPostExecute(result);

   textview.setText("Done!!! See Your Logcat...");
   
   if (pDialog != null && pDialog.isShowing()) {
    pDialog.dismiss();
   }

   if (null != itemsList && itemsList.size() != 0) {
    for (int index = 0; index < itemsList.size(); index  ) {
     Bean objBean = itemsList.get(index);

     System.out.println(">>>>>>>>>>>>>>>"   index);
     System.out.println("ID :: "   objBean.getId());
     System.out.println("TITLE :: "   objBean.getTitle());
     System.out.println("DESC :: "   objBean.getDesc());
     System.out.println("PUBDATE :: "   objBean.getPubDate());
     System.out.println("LINK :: "   objBean.getLink());
    }
   }
  }
 }

 public void showToast(String msg) {
  Toast.makeText(MainActivity.this, msg, Toast.LENGTH_LONG).show();
 }

 public boolean isNetworkAvailable() {
  ConnectivityManager connectivity = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
  if (connectivity == null) {
   return false;
  } else {
   NetworkInfo[] info = connectivity.getAllNetworkInfo();
   if (info != null) {
    for (int i = 0; i < info.length; i  ) {
     if (info[i].getState() == NetworkInfo.State.CONNECTED) {
      return true;
     }
    }
   }
  }
  return false;
 }
}

Bean.java


package com.samir;
public class Bean {
 private String id;
 private String title;
 private String desc;
 private String pubDate;
 private String link;
 public String getId() {
  return id;
 }
 public void setId(String id) {
  this.id = id;
 }
 public String getTitle() {
  return title;
 }
 public void setTitle(String title) {
  this.title = title;
 }
 public String getDesc() {
  return desc;
 }
 public void setDesc(String desc) {
  this.desc = desc;
 }
 public String getPubDate() {
  return pubDate;
 }
 public void setPubDate(String pubDate) {
  this.pubDate = pubDate;
 }
 public String getLink() {
  return link;
 }
 public void setLink(String link) {
  this.link = link;
 }
}