how to use a listview in fragment

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i am trying to display information on a listView with pictures in a fragment using SherlockListFragment... the details are coming from database .i tried it without putting it in a fragment ..that is i extended listActivity not SherlockListFragment.... and it worked... what am i missing

this is my activity class

import java.util.ArrayList;
import java.util.HashMap;

import org.json.JSONArray;
import org.json.JSONObject;

import com.actionbarsherlock.app.SherlockListFragment;


import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;

public class Now_Showing extends SherlockListFragment {

       private static final String TAG_POSTS = "posts";
        public static final String TAG_ID = "id";
        public static final String TAG_NAME = "category";
        public static final String TAG_CATEGORIES_COUNT = "categories_count";
        public static final String TAG_CATEGORIES_LOGO = "categories_logo";

        private static final String URL_CATEGORY = "http://ift.tt/WMu0ls";
        private BaseAdapter mAdapter;
        private ListView lv;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.nowshowing, container, false);
           lv = getListView();
            lv.setDivider(null);
          new LoadComments().execute();
        return rootView;

    } 
    class LoadComments extends AsyncTask<Void, Void, ArrayList<HashMap<String,String>>> {
        private ProgressDialog pDialog;
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            pDialog = new ProgressDialog(getActivity());

            pDialog.setIndeterminate(false);
            pDialog.setCancelable(true);

        }

        @Override
        protected ArrayList<HashMap<String, String>> doInBackground(Void... arg0) {

            ArrayList<HashMap<String, String>> categoryList = new ArrayList<HashMap<String, String>>();
            JSONParser jParser = new JSONParser();
            JSONObject json = jParser.getJSONFromUrl(URL_CATEGORY);
            try {
                JSONArray categories = json.getJSONArray(TAG_POSTS);
                for (int i = 0; i < categories.length(); i++) {
                    String id = categories.getJSONObject(i).getString("TAG_ID");
                    String name = categories.getJSONObject(i).getString("TAG_NAME");
                    String songs_count = categories.getJSONObject(i).getString("TAG_CATEGORIES_COUNT");
                    String category_logo = categories.getJSONObject(i).getString("TAG_CATEGORIES_LOGO");

                    HashMap<String, String> map = new HashMap<String, String>();
                    map.put(TAG_ID, id);
                    map.put(TAG_NAME, name);
                    map.put(TAG_CATEGORIES_COUNT, songs_count);
                    map.put(TAG_CATEGORIES_LOGO, category_logo);

                    categoryList.add(map);
                }
            }catch (Throwable e){
                e.printStackTrace();
            }
            return categoryList;
        }

        @Override
        protected void onPostExecute(ArrayList<HashMap<String, String>> result) {
            super.onPostExecute(result);
            if(pDialog.isShowing()){
                pDialog.dismiss();
            }
            mAdapter = new CategoryListAdapter(getActivity(),result);
            lv.setAdapter(mAdapter);
            mAdapter.notifyDataSetChanged();
        }
    }
}

this is my adapter class

import java.util.ArrayList;

import java.util.HashMap;
import com.squareup.picasso.Picasso;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class CategoryListAdapter extends BaseAdapter {
    private Context mContext;
    LayoutInflater inflater;
    private final ArrayList<HashMap<String, String>> urls;
    HashMap<String, String> resultp = new HashMap<String, String>();

    public static final String CATEGORY_LOGO_URL = "http://ift.tt/1wbpuvW";

    public CategoryListAdapter(Context context,
            ArrayList<HashMap<String, String>> items) {
        mContext = context;
        urls = items;
    }

    @Override
    public int getCount() {
        return urls.size();
    }

    @Override
    public Object getItem(int position) {
        return position;
    }

    @Override
    public long getItemId(int position) {
        return getItem(position).hashCode();
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        TextView category_name;
        ImageView category_logo;
        TextView item_count;
        TextView item_id;

        inflater = (LayoutInflater) mContext
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        View view = inflater.inflate(R.layout.custom_list_category, parent,
                false);

        resultp = urls.get(position);

        category_name = (TextView) view.findViewById(R.id.category_name);
        category_logo = (ImageView) view.findViewById(R.id.img_category_logo);
        item_count = (TextView) view.findViewById(R.id.songs_count);
        item_id = (TextView) view.findViewById(R.id.category_id);

        category_name.setText(resultp.get(Now_Showing.TAG_NAME));
        item_count.setText(resultp.get(Now_Showing.TAG_CATEGORIES_COUNT));
        item_id.setText(resultp.get(Now_Showing.TAG_ID));

        // Picasso image loader library starts here
        Picasso.with(mContext)
                .load(resultp.get(Now_Showing.TAG_CATEGORIES_LOGO)) // Photo URL
                .placeholder(R.drawable.placeholder) // This image will be displayed while photo URL is loading
                .error(R.drawable.error) // if error shows up during downloading
                .fit().centerCrop() // settings
                .into(category_logo); // we put it into our layout component (imageview)

        return view;
    }

}

this is the error

01-03 16:55:44.376: E/AndroidRuntime(2455): java.lang.IllegalStateException: Content view not yet created
01-03 16:55:44.376: E/AndroidRuntime(2455):     at android.support.v4.app.ListFragment.ensureList(ListFragment.java:328)
01-03 16:55:44.376: E/AndroidRuntime(2455):     at android.support.v4.app.ListFragment.getListView(ListFragment.java:222)
01-03 16:55:44.376: E/AndroidRuntime(2455):     at com.mall.first.Now_Showing.onCreateView(Now_Showing.java:36)
01-03 16:55:44.376: E/AndroidRuntime(2455):     at android.support.v4.app.Fragment.performCreateView(Fragment.java:1460)
01-03 16:55:44.376: E/AndroidRuntime(2455):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:911)
01-03 16:55:44.376: E/AndroidRuntime(2455):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088)
01-03 16:55:44.376: E/AndroidRuntime(2455):     at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
01-03 16:55:44.376: E/AndroidRuntime(2455):     at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1444)

asked 47 secs ago

arinze

18

how to use a listview in fragment