Checkbox inside Custom ListVIew is not workinf : When i use textview instead of checkbox, it works perfectly. But with checkbox it doesnt work. What is wrong here?

I want to update Menuitem with every checkboxevent.

So how can i make this working?
This is custom made listview, so i dont have listview in my xml file. I only have textview and checkbox in xml file.


        package com.example.chaps.pizzaorder;
        import android.content.Intent;
        import android.content.res.TypedArray;
        import android.graphics.Paint;
        import android.os.Bundle;
        import android.support.annotation.Nullable;
        import android.support.v4.app.Fragment;
        import android.support.v4.app.ListFragment;
    import android.view.LayoutInflater;
    import android.view.Menu;
    import android.view.MenuInflater;
    import android.view.MenuItem;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.AdapterView;
    import android.widget.CheckBox;
    import android.widget.CompoundButton;
    import android.widget.ListView;
    import android.widget.SimpleAdapter;
    import android.widget.TextView;
    import android.widget.Toast;
    
    import java.util.ArrayList;
    import java.util.HashMap;
    
    /**
     * Created by chaps on 17/04/2017.
     */
    
    public class veggies extends ListFragment {
    
        ArrayList<HashMap<String, String>> data=new ArrayList<HashMap<String,String>>();
        SimpleAdapter adapter;
        String st;
        double value;
        double new_value;
        //TextView txt;
    
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setHasOptionsMenu(true);
    
    
        }
    
    
    
        public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    
            String[] menuItem= getResources().getStringArray(R.array.veggie_topping);
    
    
    
            String[] menuPrice=getResources().getStringArray(R.array.topping_price_veggie);
    
    
    
    
            HashMap<String, String> map=new HashMap<String, String>();//custom adapter for image and text in list View
    
            for(int i=0;i<menuItem.length;i++)
            {
                map=new HashMap<String, String>();
                map.put("Pizza",menuItem[i]);
                map.put("Price",menuPrice[i]);
                data.add(map);
            }
            String[] from={"Pizza","Price"};
            int[] to={R.id.textView5,R.id.checkBox};
            adapter=new SimpleAdapter(getActivity(),data,R.layout.veggies,from,to);
            setListAdapter(adapter);
    
    
    
            return super.onCreateView(inflater,container,savedInstanceState);
    
        }
    
        public void onStart() {
    
            super.onStart();
            getListView().setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    /*
        orders fragment = new orders();
        Bundle bundle = new Bundle();
        bundle.putString(String.valueOf(R.string.MD01), data.get(position).get("Pizza"));
        fragment.setArguments(bundle);
        getActivity().getSupportFragmentManager().beginTransaction().replace(R.id.main_content,fragment).commit();
    
    */
                  // st=data.get(position).get("Price");
                    st=data.get(position).get("Price").substring(1);
                    value=Double.parseDouble(st);
                    new_value=new_value+value;
    
    Toast.makeText(getContext(),st,Toast.LENGTH_SHORT).show();
    
    
    
    
                }
            });
    
    
    
        }
        public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
            super.onCreateOptionsMenu(menu, inflater);
            inflater.inflate(R.menu.menu_pizza_details, menu);
        }
    
        public void onPrepareOptionsMenu(Menu menu) {
    
            MenuItem green = menu.findItem(R.id.actnprice);
            if(green.getTitle() != String.valueOf(R.string.actnShow)){
                // If green menu item title not updated then update/change it
                green.setTitle("€"+new_value);
                //Toast.makeText(getContext(),"Green MenuItem Edited",Toast.LENGTH_SHORT).show();
            }
            super.onPrepareOptionsMenu(menu);
            getActivity().supportInvalidateOptionsMenu();
        }
    
    }


