实例介绍
【实例简介】
【实例截图】
【实例截图】
【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; } }
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