@Override
  public final void onBindViewHolder(final ViewHolder viewHolder, int i) {
    final QuestionAnsweringRVInfo currentQuestionAnsweringRVInfo =
        questionAnsweringRVInfoList.get(i);

    viewHolder.questionIndexOut.setText(
        String.valueOf(currentQuestionAnsweringRVInfo.getIndex() + 1));

    String[] answerArray;
    String text = "";

    try {
      answerArray = currentQuestionAnsweringRVInfo.getAnswer().getAnswerArray();
    } catch (NullPointerException e) {
      answerArray = new String[0];
    }

    if (answerArray.length == 0) {
      // *Not answered yet:
      text = context.getResources().getString(R.string.output_examAnswering_questionNotAnsweredYet);
    } else {
      // *It has an answer:
      for (int j = 0; j < answerArray.length; j++) {
        text += answerArray[j];
        text += (answerArray.length > (j + 1)) ? ", " : "";
      }
    }
    viewHolder.textOut.setText(text);

    viewHolder.questionAnsweringRVInfo = currentQuestionAnsweringRVInfo;
  }
 /*
  *  * ========== * ========== * ========== * ========== * ========== * ========== * ========== * ========== *
  *  * Validatable methods:
  *  * ========== * ========== * ========== * ========== * ========== * ========== * ========== * ========== *
  */
 @Override
 public boolean isValid() {
   for (QuestionAnsweringRVInfo questionAnsweringRVInfo : questionAnsweringRVInfoList) {
     try {
       if (questionAnsweringRVInfo.getAnswer().getAnswerArray().length == 0) {
         try {
           invalidText =
               context
                   .getResources()
                   .getString(
                       R.string.output_invalidField_questionAnsweringRV_unansweredQuestions);
         } catch (NullPointerException e) {
           e.printStackTrace();
         }
         return false;
       }
     } catch (NullPointerException e) {
       try {
         invalidText =
             context
                 .getResources()
                 .getString(R.string.output_invalidField_questionAnsweringRV_unansweredQuestions);
       } catch (NullPointerException e2) {
         e2.printStackTrace();
       }
       return false;
     }
   }
   return true;
 }