ListView onListItemClick confused

viju85 · by **viju85** » Wed Feb 25, 2009 1:59 am

Hi,
I am creating an application which parses an XML from the web and
displays the items of a <title>tag in another ListView. Basically i
want to know an effecient way of using ListView all throughout the
application.

Ex:
Part
1
Part 2 Part 3
My Bookshelf -----Click----->Opens another ListView ---->Book 1-------
> Click------> ListView----->First Page

Options
Book 2
Help
Exit

I am able to go from part 1 to part 2. but not from part 2 to part3. I
might be doing some mistake in part 1 to part 2 itself.

Please advise. I am very confused and stuck.

My Code:

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Using java Syntax Highlighting

 
package com.vijay.Splash;
 
import java.io.IOException;
 
import java.io.InputStream;
 
import java.net.HttpURLConnection;
 
import java.net.URL;
 
import java.net.URLConnection;
 
import java.util.ArrayList;
 
import javax.xml.parsers.DocumentBuilder;
 
import javax.xml.parsers.DocumentBuilderFactory;
 
import javax.xml.parsers.ParserConfigurationException;
 
import org.w3c.dom.Document;
 
import org.w3c.dom.Element;
 
import org.w3c.dom.Node;
 
import org.w3c.dom.NodeList;
 
import org.xml.sax.SAXException;
 
import android.app.ListActivity;
 
import android.content.Intent;
 
import android.os.Bundle;
 
import android.view.View;
 
import android.widget.ArrayAdapter;
 
import android.widget.ListView;
 
public class MogoMenu extends ListActivity {
 
        ArrayList<String> linksArray = new ArrayList();
 
        ArrayList<String> itemsArray = new ArrayList();
 
        private static final int ACTIVITY_BOOKS=1;
 
        /** Called when the activity is first created. */
 
    @Override
 
    public void onCreate(Bundle savedInstanceState) {
 
        super.onCreate(savedInstanceState);
 
        setListAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, MENU_NAMES));
 
    }
 
    private static final String[] MENU_NAMES = new String[] {
 
        "My Bookshelf",
 
        "On the Go",
 
        "Options",
 
        "Help",
 
    };
 
    public void onListItemClick(ListView l, View v, int position, long id) {
 
        // Pre-load the image then start the animation
 
        System.out.println("LISTVIEW" +getListView().toString());
 
        System.out.println("On Item Click" +position);
 
        if(position == 0)
 
        {
 
                DownloadBookShelf("http://xmlgwdev.lotusbookworks.com/?acctid=0bfHgPce7k:Hiw6hsB4fx&listID=1");
 
                //setListAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,itemsArray));
 
                Intent i = new Intent(this, ViewBook.class);
 
            i.putExtra("bookTitle", id);
 
            i.putStringArrayListExtra("bookLink",linksArray);
 
            startActivity(i);
 
            finish();
 
        }
 
        else if(position == 3)
 
        {
 
                setContentView(R.layout.help);
 
        }
 
    }
 
    public InputStream OpenHttpConnection(String urlString) throws IOException
 
    {
 
        InputStream in = null;
 
        int response = -1;
 
        URL url = new URL(urlString); 
 
        URLConnection conn = url.openConnection();
 
        System.out.println("Opening Connection");
 
        if (!(conn instanceof HttpURLConnection))                     
 
            throw new IOException("Not an HTTP connection");
 
        try
 
        {
 
                System.out.println("Obtaining CONNECTION");
 
            HttpURLConnection httpConn = (HttpURLConnection) conn;
 
            httpConn.setAllowUserInteraction(false);
 
            httpConn.setInstanceFollowRedirects(true);
 
            httpConn.setRequestMethod("GET");
 
            System.out.println("Connecting");
 
            httpConn.connect(); 
 
            response = httpConn.getResponseCode();                 
 
            if (response == HttpURLConnection.HTTP_OK) 
 
            {
 
                System.out.println("SUPER CONNECTION");
 
                in = httpConn.getInputStream(); 
 
                System.out.println("Bitmap puttin into IMG1");
 
            }                     
 
        }
 
        catch (Exception ex)
 
        {
 
            throw new IOException("Error connecting");            
 
        }
 
        return in;     
 
    }
 
    /*Download XML RSS feed*/
 
        private void DownloadBookShelf(String URL)
 
    {
 
        InputStream in = null;
 
        try {
 
            in = OpenHttpConnection(URL);
 
            Document doc = null;
 
            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
 
            DocumentBuilder db;
 
            try {
 
                db = dbf.newDocumentBuilder();
 
                doc = db.parse(in);
 
            } catch (ParserConfigurationException e) {
 
                // TODO Auto-generated catch block
 
                e.printStackTrace();
 
            } catch (SAXException e) {
 
                // TODO Auto-generated catch block
 
                e.printStackTrace();
 
            }        
 
            doc.getDocumentElement().normalize(); 
 
            itemsArray.clear();
 
            linksArray.clear();
 
            String strTitle = null;
 
            String strLink = null;
 
            NodeList itemNodesList = doc.getElementsByTagName("a"); 
 
            for (int i = 0; i < itemNodesList.getLength(); i++) { 
 
                Node itemNode = itemNodesList.item(i); 
 
                if (itemNode.getNodeType() == Node.ELEMENT_NODE) 
 
                {            
 
                    //---convert the Node into an Element---
 
                    Element itemElement = (Element) itemNode;
 
                    //---get all the TITLES element under the  
 
                    NodeList titleNodes = 
 
                        (itemElement).getElementsByTagName("a");
 
                    Element titleElement = (Element) titleNodes.item(0);
 
                    //---get all the child nodes under the <title> element---
 
                    NodeList textitemNodes = 
 
                        ((Node) titleElement).getChildNodes();
 
                    //---retrieve the text of the <title> element---
 
                    strTitle = ((Node) textitemNodes.item(0)).getNodeValue();
 
                    itemsArray.add(strTitle);
 
                    System.out.println("ITEM : "+strTitle);
 
                }
 
            }
 
            for (int i = 0; i < itemNodesList.getLength(); i++) { 
 
                        strLink = ((Element) itemNodesList.item(i)).getAttribute("href");
 
                    linksArray.add(strTitle);
 
                    System.out.println("URL LINK: "+strLink);
 
           }
 
            in.close();
 
        } catch (IOException e1) {
 
            e1.printStackTrace();            
 
        }
 
    }
 
}
 
Parsed in 0.057 seconds,  using GeSHi 1.0.8.4

kali · by **kali** » Thu Feb 26, 2009 12:59 pm

hai friend
is it possible to extend two thinks in one application
for example
public class expe extends Activity : ListActivity.

kali · by **kali** » Mon Mar 02, 2009 2:11 pm

haiu friend
is there any way to use an image in list view
is any one tell me
pls???
!!!!!!!!!!!!!

ListView onListItemClick confused

ListView onListItemClick confused

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