Retrieved values when listview item is clicked

I created a listview using an adapter. the listview contains the distinct values of a particular field in a table. now,when the listview item is clicked, it should retrieve all items which have the id of that particular data. i manage to get the data from the listview but when the items are not fetched properly.

row.xml

    <ImageView
    android:id="@+id/img"
    android:src="@mipmap/ic_message"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>

    <TextView
    android:id="@+id/txtid"
    android:layout_marginTop="10dp"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="sd"
    />

Tab2.java

 ListView list;
    final ArrayList<HashMap<String, String>> mylist;
    ListAdapter adapter;
    HashMap<String, String> map2;
   final TextView a1;
    list = (ListView) v.findViewById(R.id.listView2);
    a1 = (TextView) v.findViewById(R.id.txt1);
    mylist = new ArrayList<HashMap<String, String>>();

    DatabaseHandler db = new DatabaseHandler(getActivity());
    final List<Product> sent = db.getSentProducts();
    for (Product s : sent) {
        map2 = new HashMap<String, String>();
        map2.put("txtid", s.getMsg_id());
        mylist.add(map2);
        Log.d("msgid", s.getMsg_id());
    }
    for (Product s : sent) {
    }
    try {
        adapter = new SimpleAdapter(getActivity(),mylist,R.layout.sent_row, new String[]{"txtid"}, new int[]{R.id.txtid});
        list.setAdapter(adapter);
    } catch (Exception e) {
    }


    list.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
        @Override
        public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {

            TextView a = (TextView)v.findViewById(R.id.txtid);
            String content1 = a.getText().toString();
            DatabaseHandler db = new DatabaseHandler(getActivity());
            List<Product> sentinfo =  db.getSentProductInfo(content1);

           for (Product si : sentinfo){

                   Log.d("asdsd", si.getStorCode()+" "+si.getCode()+" "+si.getBstock()+" "+si.getDeliveries()+" "+si.getSpoilage()+" "+ si.getEstock()+" ");
          }

            return true;
        }
    });
    return v;
}

db

android ui

When i click 20150824070159 in the listview, it should fetch two rows in the table, however, it only fetches one and it is the data of the other id, 20150820162104.

How will i be able to answer this?