Problems updating Listview from Saved contact in database android
public class GroupDetails extends FragmentActivity implements OnClickListener, LoaderCallbacks<Cursor> {

//variable for debugging the application

public static final String TAG = "MyApp.Debug";

    //request code for using with action pick intent
    static final int PICK_CONTACT = 1;

    //initial variables
    Button add_button;
    TextView label;
    ListView list;
    ResponderDB dbadapter;
    DueCustomCursorAdapter cursoradapter;
    //DueCustomCursorLoader loader;

    //cursor to retrieve contact details
    private Cursor contactsCursor;


    String groupname;
    long rowId;


    public void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        setContentView(R.layout.group_detail_list);

 //only intialize here. database will be open in custom cursor loader

dbadapter = new ResponderDB(this);

        getSupportLoaderManager().initLoader(0, null, this);
        /*Read intent and the extras passed*/
           Bundle extra = getIntent().getExtras();

            if(!extra.isEmpty() || extra.equals(null)){
             groupname = extra.getString("group_name");
             rowId = extra.getLong("rowId");
            }

        list = (ListView)findViewById(android.R.id.list);
        add_button = (Button)findViewById(R.id.add_button_id);
        label = (TextView)findViewById(R.id.group_label_id);


        Log.d(TAG, "calling custom adapter here now");
        cursoradapter = new DueCustomCursorAdapter(GroupDetails.this, null, CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER );
        list.setAdapter(cursoradapter);

        add_button.setOnClickListener(this);

    }


    @Override
    public void onClick(View view) {
        int selection = view.getId();
        if(selection == R.id.add_button_id){

            Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
            startActivityForResult(intent, PICK_CONTACT);
        }

    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data){
        if(requestCode == PICK_CONTACT){
            getContactInfo(data);
        }
    }


    private void getContactInfo(Intent intent) {

        String number = null;
        String name = null;

        String[] projection = {ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
                ContactsContract.CommonDataKinds.Phone.NUMBER};

        CursorLoader loader = new CursorLoader(this,intent.getData(),
                null,null,null,null);

        contactsCursor = loader.loadInBackground();
        if(contactsCursor.moveToFirst()){

        String id = contactsCursor.getString(contactsCursor.getColumnIndex(ContactsContract.Contacts._ID));
        name = contactsCursor.getString(contactsCursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));

        //get the Phone Number
        Cursor numberCursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI
                , null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[] {id}, null);
        while(numberCursor.moveToNext()){
            number = numberCursor.getString(numberCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
        }

        }

        Log.d(TAG, "Successfully added contacts for group");
        //dbadapter.updateGroup(rowId, values);

        dbadapter.saveContacts(name, number, String.valueOf(rowId));
        cursoradapter.notifyDataSetChanged();
        getSupportLoaderManager().getLoader(0).onContentChanged();
    }


    public static final class DueCustomCursorLoader extends SimpleCursorLoader {
        public static final String TAG = "MyApp.Debug";
        public static int RETRIEVE_CODE = 1;

        ResponderDB dbadapter1;
        int retrieveCode;


        public DueCustomCursorLoader(Context context, ResponderDB dbadapter) {
            super(context);
           this.dbadapter1= dbadapter;

        }

        public DueCustomCursorLoader(Context context, ResponderDB dbadapter, int retrieveCode){

            super(context);
            this.dbadapter1 = dbadapter;
            this.retrieveCode = retrieveCode;
        }



        @Override
        public Cursor loadInBackground() {
            Cursor cursor = null;

            dbadapter1.open();

                cursor = dbadapter1.readContact(retrieveCode);

            return cursor;
        }

    }

    public class DueCustomCursorAdapter extends CursorAdapter {
        public static final String TAG = "SmsResponder.Debug";
        private Context myContext;



        public DueCustomCursorAdapter(Context context,Cursor c, int flags) {
            super(context, c, flags);
            myContext = context;

        }

        //never seem to get here
        @Override
        public void bindView(View view, Context context, Cursor cursor) {

            ViewHolder holder = (ViewHolder)view.getTag();
            String contactName = cursor.getString(cursor.getColumnIndexOrThrow(ResponderDB.NAME));
            String contactNumber = cursor.getString(cursor.getColumnIndex(ResponderDB.NUMBER));

            Log.d(TAG, "contact name is " + contactName);
            Log.d(TAG, "contact number is " + contactNumber);

            holder.contact_name.setText(contactName);
            holder.contact_number.setText(contactNumber);
        }

        @Override
        public View newView(Context context, Cursor cursor, ViewGroup parent) {
            ViewHolder holder = new ViewHolder();

                View view = LayoutInflater.from(myContext).inflate(R.layout.group_detail_item, parent,false);
                holder.contact_name = (TextView)view.findViewById(R.id.group_item_id);
                holder.contact_number = (TextView)view.findViewById(R.id.group_subitem_id);
                view.setTag(holder);

                return view;
        }

    }

    static class ViewHolder {
          TextView text;
          TextView contact_name;
          TextView contact_number;
          CheckBox checkbox;
        }

    @Override
    public Loader<Cursor> onCreateLoader(int id, Bundle arg1) {

        return new DueCustomCursorLoader(GroupDetails.this, dbadapter, (int)rowId);
    }


    @Override
    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
        cursoradapter.swapCursor(data);

    }


    @Override
    public void onLoaderReset(Loader<Cursor> arg0) {

        cursoradapter.swapCursor(null);
    }

}

cursoradapter.notifyDataSetChanged();
   getSupportLoaderManager().getLoader(0).onContentChanged();

getSupportLoaderManager().getLoader(0).onContentChanged();
   cursoradapter.notifyDataSetChanged();