Why don't active contextual action bar when check the checkbox on the listview?

I want to show custom action bar when checkbox checked in listview. I wrote the one xml file type of menu like this:

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://ift.tt/nIICcg" >

    <item
        android:id="@+id/delete"
        android:title="actionbar"
        android:icon="@drawable/recycle"/>

</menu>

I use for custom listview this codes:

private class Adapter_collection extends ArrayAdapter<String> {

public Adapter_collection(Context context, int resource, int textViewResourceId,
        String[] name_collection_tbl_collection) {
    super(context, resource, textViewResourceId, name_collection_tbl_collection);
}

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

    LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View row = inflater.inflate(R.layout.listview_items, parent, false);
    TextView txt_item_list_collection = (TextView)row.findViewById(R.id.textView_Item_Listview);
    CheckBox checkBox=(CheckBox)row.findViewById(R.id.checkBox_Item_Listview);

    checkBox.setTag(position);
    checkBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {         
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked ) {   
            if (mActionmode!=null) {
                MyActionModeCallBack callBack = new MyActionModeCallBack();
                mActionmode = startActionMode(callBack);
            }

                //Toast.makeText(getApplicationContext(), buttonView.getTag().toString() , Toast.LENGTH_SHORT).show();      
        }
    });
    txt_item_list_collection.setText(name_collection_tbl_collection[position]);
    return row;
}

}

I add this class for use contextual action bar :

    private class MyActionModeCallBack implements ActionMode.Callback {

    @Override
    public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public boolean onCreateActionMode(ActionMode mode, Menu menu) {
        mode.getMenuInflater().inflate(R.menu.actionbar_menu, menu);
        return true;
    }

    @Override
    public void onDestroyActionMode(ActionMode mode) {
        mActionmode = null;
    }

    @Override
    public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
        // TODO Auto-generated method stub
        return false;
    }
}

Now When I check the checkboxes in listview , action bar don't changed . Please advice.