android check box on listview

please tell me how to set the check box on my listview i am already write code for checkbox but it cant show me on my listview

Spinner spin;
    ListView lvl;
    ArrayAdapter<String> adapter;
    Context context;
    ArrayList<String> data;
    ArrayList<String> ItemsList;
    String selectedFromList;
    ArrayAdapter<String> adapter_subjects;
    private ProgressDialog pDialog;

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.selection);

        data = new ArrayList<String>();
        spin = (Spinner) findViewById(R.id.spinners);
        context = this;

        adapter_subjects = new ArrayAdapter<String>(spin.this,
                android.R.layout.simple_spinner_item, data);
        adapter_subjects
                .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spin.setAdapter(adapter_subjects);

        adapter_subjects.clear();
        new asynctaskLoadsubjects().execute();

        /* lvl =(ListView)findViewById(R.id.list); */

        ItemsList = new ArrayList<String>();
        adapter = new ArrayAdapter<String>(spin.this,
                android.R.layout.simple_list_item_1, ItemsList);
        lvl = (ListView) findViewById(R.id.list);

        lvl.setAdapter(adapter);

        adapter.clear();
        new asyncFetchAllItems().execute();

        lvl.setOnItemClickListener(new OnItemClickListener() {

            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                selectedFromList = (String) (lvl.getItemAtPosition(position));

                Intent i = new Intent(getApplicationContext(),orders.class);
                i.putExtra("Item name", selectedFromList);
                startActivity(i);

                Toast.makeText(getApplicationContext(), selectedFromList,
                        Toast.LENGTH_SHORT).show();

            }
        });

    }

    public class asynctaskLoadsubjects extends
            AsyncTask<Void, JSONObject, ArrayList<hotelitem>> {
        ArrayList<hotelitem> hotelitem = null;

        @Override
        protected ArrayList<hotelitem> doInBackground(Void... params) {
            // TODO Auto-generated method stub
            RestAPI api = new RestAPI();
            try {
                JSONObject jsonObject = api.Getitem();
                JSONParser parser = new JSONParser();
                hotelitem = parser.parseItemss(jsonObject);
            } catch (Exception e) {
                Log.d("AsyncLoadVehicleCompanies", e.getMessage());
            }

            return hotelitem;
        }

        @Override
        protected void onPostExecute(ArrayList<hotelitem> result) {

            for (int i = 0; i < result.size(); i++) {
                data.add(result.get(i).getItemtype());
            }

            adapter_subjects.notifyDataSetChanged();
        }

    }

    public class asyncFetchAllItems extends
            AsyncTask<Void, JSONObject, ArrayList<ItemTable>> {
        ArrayList<ItemTable> ItemTable = null;



        @Override
        protected ArrayList<ItemTable> doInBackground(Void... params) {
            // TODO Auto-generated method stub
            RestAPI api = new RestAPI();
            try {

                JSONObject jsonObject = api.Getallitems();
                JSONParser parser = new JSONParser();
                ItemTable = parser.parseitemdetails(jsonObject);
            } catch (Exception e) {
                Log.d("AsyncLoadVehicleCompanies", e.getMessage());
            }

            return ItemTable;
        }

        @Override
        protected void onPostExecute(ArrayList<ItemTable> result) {

            pDialog.dismiss();

            for (int i = 0; i < result.size(); i++) {
                ItemsList.add(" \n Item Name :" + result.get(i).getItemname()
                        + "\n" + "\n price            :"
                        + result.get(i).getItemprice() + "\n");
            }

            adapter.notifyDataSetChanged();

            Toast.makeText(context, "Loading Completed", Toast.LENGTH_SHORT)
                    .show();
        }

    }

    public class MyCustomAdapter extends ArrayAdapter<checkTable> {

        public ArrayList<checkTable> itemsList;

        public MyCustomAdapter(Context context, int textViewResourceId,ArrayList<checkTable> itemsList) {
            super(context, textViewResourceId, itemsList);
            this.itemsList = new ArrayList<checkTable>();
            this.itemsList.addAll(itemsList);
        }

        private class ViewHolder {
            TextView code;
            CheckBox name;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {

            ViewHolder holder = null;
            Log.v("ConvertView", String.valueOf(position));

            if (convertView == null) {
                LayoutInflater vi = (LayoutInflater)getSystemService(
                        Context.LAYOUT_INFLATER_SERVICE);
                convertView = vi.inflate(R.layout.abb_list, null);

                holder = new ViewHolder();
                holder.code = (TextView) convertView.findViewById(R.id.code);
                holder.name = (CheckBox) convertView.findViewById(R.id.checkBox1);
                convertView.setTag(holder);

                holder.name.setOnClickListener( new View.OnClickListener() { 
                    public void onClick(View v) { 
                        CheckBox cb = (CheckBox) v ; 
                        checkTable country = (checkTable) cb.getTag(); 
                        Toast.makeText(getApplicationContext(),
                                "Clicked on Checkbox: " + cb.getText() +
                                " is " + cb.isChecked(),
                                Toast.LENGTH_LONG).show();
                        country.setSelected(cb.isChecked());
                    } 
                }); 
            }
            else {
                holder = (ViewHolder) convertView.getTag();
            }

            checkTable checkTable = itemsList.get(position);
            holder.code.setText(" (" +  checkTable.getitemprice() + ")");
            holder.name.setText(checkTable.getitemname());
            holder.name.setChecked(checkTable.isSelected());
            holder.name.setTag(checkTable);
            return convertView;
        }
    }
}

i am using reference of this site

please help me dear friends i am using this example for my example