comment définir un élément de liste de valeurs dans la classe d'adaptateur et obtenir une valeur sur Button Click dans Android

Classe d'adaptateur:

public List<TSPDataModel> employeeData;
    private Context mContext;
    private LayoutInflater mInflater;
    RadioGroup radiogroupbutton;
    String[] data = {"Document not clear","Adress is not Visibile","Photo is not pasted","Signature is not Avilable"};
    String   value;
    public TSPListDocumentadapter(Context context, int textViewResourceId,
                                  List<TSPDataModel> objects)

    {
        this.employeeData = objects;
        this.mContext = context;
        mInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        final ViewHolder holder;

        if (convertView == null) {
            holder = new ViewHolder();
            convertView = mInflater.inflate(R.layout.tspdocumentlistitem, null);
            holder.relatvie1=(RelativeLayout)convertView.findViewById(R.id.relatvie1);
            holder.txtName = (TextView) convertView.findViewById(R.id.textView1);
            holder.accecpt = (ImageView) convertView.findViewById(R.id.imageButton);
            holder.reject = (ImageView) convertView.findViewById(R.id.imageButton2);
            holder.statustextview = (TextView) convertView.findViewById(R.id.statustextview);
            holder.poaedittext=(TextView) convertView.findViewById(R.id.poieditext);
           holder.poaedittext=(TextView)convertView.findViewById(R.id.poaedittext);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        holder.txtName.setText(employeeData.get(position).getName());
        holder.poaedittext.setText(employeeData.get(position).getPoa());

        holder.accecpt.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                holder.statustextview.setText("Accepted");

                employeeData.get(position).setSelected(true);
                employeeData.get(position).getOrderId();
                holder.relatvie1.setBackgroundResource(R.color.acceptedcolor);

            }
        });

        holder.reject.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                showdilog();
                holder.statustextview.setText("Rejected");
                employeeData.get(position).setSelected(false);
                employeeData.get(position).setReasone(value);
                holder.relatvie1.setBackgroundResource(R.color.rejectcolor);
            }
        });


        return convertView;
    }

    static class ViewHolder {
        TextView txtName;
        ImageView reject;
        ImageView accecpt;
        TextView statustextview;
        TextView poiedittext;
        TextView poaedittext;
        RelativeLayout relatvie1;
    }

    public int getCount() {
        return employeeData.size();
    }

    public TSPDataModel getItem(int position) {
        return employeeData.get(position);
    }

    public long getItemId(int position) {
        return 0;
    }


    public void showdilog() {
        final Dialog dialog = new Dialog(mContext);
        dialog.setContentView(R.layout.layoutpopup);
        radiogroupbutton = (RadioGroup) dialog.findViewById(R.id.radio_gp_day);
        ListView listview = (ListView) dialog.findViewById(R.id.radio_slot_list);
        Button setbutton = (Button) dialog.findViewById(R.id.setbutton);
        List<String> list = new ArrayList<String>();
        ArrayAdapter<String> myadpter = new ArrayAdapter<String>(mContext, android.R.layout.simple_list_item_single_choice, data);
        for (int i = 0; i < data.length; i++) {
            list.add(data[i]);
        }
        listview.setAdapter(myadpter);
        listview.setItemsCanFocus(false);
        listview.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
        listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                value = data[position];
                Toast.makeText(mContext, value, Toast.LENGTH_LONG).show();
            }
        });
        setbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Toast.makeText(mContext, value, Toast.LENGTH_LONG).show();
                dialog.dismiss();


            }
        });

        dialog.show();
    }

Ce bouton clique dans ma classe d'actvity:

    @Override
    public void onClick(View view) {
        if (view.getId() == R.id.button1) {
            try {

                List<TSPDataModel> empData = adapter.employeeData;
                System.out.println("Total Size :" + empData.size());

                for (TSPDataModel employeeModel : empData) {
                    if (employeeModel.isSelected()) {
              Toast.makeText(TSPDocumentListActvity.this, employeeModel.getName(), Toast.LENGTH_LONG).show();
                    } else {

String Reasonse=   employeeModel.getresonse() ;                

                        Toast.makeText(TSPDocumentListActvity.this, "false" + employeeModel.getName(), Toast.LENGTH_LONG).show();
                    }
                }


            } catch (Exception e) {
                e.printStackTrace();
            }

        }
    }

D'abord, j'imprime les données dans Listview, puis chaque élément de vue de liste il y a Accepter et rejeter Le bouton est là lorsque nous cliquons sur Accepter, aucune alerte ne sera demandée, seulement la raison du bouton de rejet demandera qui est venu sur l'élément de liste sur la fenêtre contextuelle Je veux obtenir la raison sélectionnée Cliquez sur le bouton dans actvity mais j'obtiens toujours une valeur nulle, aidez-moi là où je me trompe