Async http call in custom listview

Issue

I have question regardin async http call in my custom listview. How do i call async call in my following custom Listview and parse json to fill the Listview . My Custom Listview is contain from images and text.

import java.util.ArrayList;

import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.ListActivity;
import android.os.Bundle;
import android.os.StrictMode;
import android.view.Menu;
import android.view.View;
import android.widget.ListView;

public class ListActivityS extends ListActivity 
{

    private GetHttpCall getCall;


    String item[];
    int id[];


    ArrayList<Video> videos;

    @SuppressLint("NewApi")
    @Override
    public void onCreate(Bundle savedInstanceState) {
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);

        super.onCreate(savedInstanceState);


        //Crearte instance to http call
        getCall=new GetHttpCall();
        String response=null;
        try {
            response=getCall.connect();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        JSONParser _parser=new JSONParser();
        _parser.parseHttpJson(response);

        item = JSONParser.num_title;
        id=JSONParser.num_id;

        videos=new ArrayList<Video>();


         for(int i=0;i<item.length;i++)
         {
             Video vid=new Video();
             vid.setTitle(item[i]);
             vid.setId(id[i]);

             videos.add(vid);
         }

        getListView().setDividerHeight(2);

        getListView().setAdapter(new BindDataAdapter(this, videos));
    }

    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);
        Builder builder = new AlertDialog.Builder(this);
        builder.setMessage(item[position] + " is clicked.");
        builder.setPositiveButton("OK", null);
        builder.show();
    }



    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_list, menu);
        return true;
    }



}

Solution

asynctask

Call new AsyncAction().execute(null, null, null);

@Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);
        Builder builder = new AlertDialog.Builder(this);
        builder.setMessage(item[position] + " is clicked.");
        builder.setPositiveButton("OK", null);
        builder.show();
    }


private class AsyncAction extends AsyncTask<String, Void, String> {
        public boolean status = false;
        private ProgressDialog pd;

        @Override
        protected String doInBackground(String... arg0) {
            // TODO Auto-generated method stub
            try {


                status = true;

//Crearte instance to http call
        getCall=new GetHttpCall();
        String response=null;
        try {
            response=getCall.connect();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        JSONParser _parser=new JSONParser();
        _parser.parseHttpJson(response);

        item = JSONParser.num_title;
        id=JSONParser.num_id;

        videos=new ArrayList<Video>();


         for(int i=0;i<item.length;i++)
         {
             Video vid=new Video();
             vid.setTitle(item[i]);
             vid.setId(id[i]);

             videos.add(vid);
         }

        getListView().setDividerHeight(2);



            } catch (Exception e) {
                // TODO: handle exception
            }

            return null;
        }

        @Override
        protected void onPostExecute(String result) {

            pd.dismiss();

             getListView().setAdapter(new BindDataAdapter(this, videos));

        }

        protected void onPreExecute() {
            // TODO Auto-generated method stub
            super.onPreExecute();
            pd = new ProgressDialog(listmessages.this);
            pd.setMessage("loading...");
            pd.setIndeterminate(true);
            pd.setCancelable(false);
            pd.show();
        }

    }



        }



    }

Answered By - Nirav Ranpara