Using listview in android

Question

I am making an android application that needs to use a ListView. I want to add a menubutton that says \"Add to list\" and once the user presses that menubutton,

Answer 1

Sample List view:

import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;

import com.example.beans.SongInfo;



import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;

public class BuddiesActivity extends Activity {

    int statusClass = 2;
    String taskResult="test";
    ListView list;
    LazyAdapter adapter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        new HttpAsyncTask().execute("http://en.wikipedia.org/w/api.php?format=json&action=query&titles=Main%20Page&prop=revisions&rvprop=content");

        do {
            try {
                Thread.sleep(2000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        } while (statusClass == 2);                 


        setContentView(R.layout.activity_buddies);
//      TextView textview=(TextView)findViewById(R.id.buddies);
//      textview.setText(taskResult);

ArrayList songsList1 = new ArrayList();

        System.out.println("Emply ArrayList Created");

        songsList1=getListData();

        System.out.println("Data added to arrayList :"+songsList1.size()+" Data is: "+songsList1);

        list=(ListView)findViewById(R.id.list);

        System.out.println("ListView Got");
        // Getting adapter by passing xml data ArrayList
        adapter=new LazyAdapter(this, songsList1);

        System.out.println("Object Of Lazy Adapter created");
        list.setAdapter(adapter);

        System.out.println("adapter set..");


        // Click event for single list row
        /*list.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView parent, View view,
                    int position, long id) {
                initiatePopupWindow();

            }
        });*/




    }

    public ArrayList getListData(){
        ArrayList list=new ArrayList();




        list.add(new SongInfo("Song", "1", "Someone Like You", "Adele", "4:47", "http://api.androidhive.info/music/images/adele.png"));
        list.add(new SongInfo("Song", "2", "Space Bound", "Eminem", "4:34", "http://api.androidhive.info/music/images/adele.png"));
        list.add(new SongInfo("Song", "3", "Stranger In Moscow", "Michael Jackson", "5:55", "http://api.androidhive.info/music/images/adele.png"));
        list.add(new SongInfo("Song", "4", "Love The Way You Lie", "Rihanna", "4:23", "http://api.androidhive.info/music/images/adele.png"));

        list.add(new SongInfo("Song", "5", "Someone Like You", "Adele", "4:47", "http://api.androidhive.info/music/images/adele.png"));
        list.add(new SongInfo("Song", "6", "Space Bound", "Eminem", "4:34", "http://api.androidhive.info/music/images/adele.png"));
        list.add(new SongInfo("Song", "7", "Stranger In Moscow", "Michael Jackson", "5:55", "http://api.androidhive.info/music/images/adele.png"));
        list.add(new SongInfo("Song", "8", "Love The Way You Lie", "Rihanna", "4:23", "http://api.androidhive.info/music/images/adele.png"));

        list.add(new SongInfo("Song", "9", "Someone Like You", "Adele", "4:47", "http://api.androidhive.info/music/images/adele.png"));
        list.add(new SongInfo("Song", "10", "Space Bound", "Eminem", "4:34", "http://api.androidhive.info/music/images/adele.png"));
        list.add(new SongInfo("Song", "11", "Stranger In Moscow", "Michael Jackson", "5:55", "http://api.androidhive.info/music/images/adele.png"));
        list.add(new SongInfo("Song", "12", "Love The Way You Lie", "Rihanna", "4:23", "http://api.androidhive.info/music/images/adele.png"));


        return list;


    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.buddies, menu);
        return true;
    }


    private class HttpAsyncTask extends AsyncTask {
        AlertDialog.Builder builder;

    protected void onPreExecute() {
        super.onPreExecute();
        builder = new AlertDialog.Builder(BuddiesActivity.this);
    }

    @Override
    protected String doInBackground(String... urls) {
            return POST(urls[0]);
    }

    @Override
    protected void onPostExecute(String result) {
    }
}





    public String POST(String url) {
        System.out.println("I am in post data./..............................");
        HttpClient httpclient = new DefaultHttpClient();
        HttpGet httppost = new HttpGet(url);
        String result = null;
        try {
            HttpResponse response = httpclient.execute(httppost);
            int status = response.getStatusLine().getStatusCode();
            System.out.println("Status is : " + status);
//          ParseProductJson parseJson = new ParseProductJson();
            if (status == 200) {
                result = EntityUtils.toString(response.getEntity());
                System.out.println("################result1###############################"+ result);
                /*FileOutputStream fos = openFileOutput("productsJson.json",
                        Context.MODE_PRIVATE);
                fos.write(result.getBytes());
                fos.close();*/

                System.out.println("Done");
                taskResult=result;

                statusClass = status;
            } else {
                statusClass = 400;
                result = "Did not work!";
            }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return result;
    }






}