@Override
  public View getView(int position, View convertView, ViewGroup parent) {
    QuestionViewHolder viewHolder;
    QuestionModel model = this.items.get(position);

    if (convertView == null) {
      viewHolder = new QuestionViewHolder();
      convertView = LayoutInflater.from(context).inflate(this.textViewId, null, false);
      viewHolder.checkBox = (CheckBox) convertView.findViewById(R.id.checkBox);
      viewHolder.questionText = (TextView) convertView.findViewById(R.id.questionText);
      viewHolder.userInfo = (TextView) convertView.findViewById(R.id.userInfo);
      viewHolder.createdDate = (TextView) convertView.findViewById(R.id.dateCreated);
      viewHolder.checkBox.setTag(position);
      convertView.setTag(viewHolder);
    } else {
      viewHolder = (QuestionViewHolder) convertView.getTag();
      viewHolder.checkBox.setTag(position);
    }

    viewHolder.questionText.setText(model.getQuestionText());
    viewHolder.userInfo.setText(
        String.format(context.getResources().getString(R.string.created_by), model.getCreatedBy()));
    viewHolder.createdDate.setText(
        String.format(context.getResources().getString(R.string.create_at), model.getCreated()));

    viewHolder.checkBox.setChecked(sparseBooleanArray.get(position, false));
    viewHolder.checkBox.setOnCheckedChangeListener(this);

    return convertView;
  }
 @Override
 public boolean onOptionsItemSelected(MenuItem item) {
   switch (item.getItemId()) {
     case R.id.answer:
       pd.setMessage(getResources().getString(R.string.submitting_answer_text));
       if (askedFrom.getTag() != null) {
         Location location = (Location) askedFrom.getTag();
         lat = location.getLatitude();
         lng = location.getLongitude();
       }
       pd.show();
       answerController.answerQuestion(
           mModel.getId(),
           answerText.getText().toString(),
           loginController.getUser(),
           lat,
           lng,
           answerCallback);
       return true;
     default:
       return false;
   }
 }