private void fillAnswerEditArea(LinearLayout questionContainer) {
    final InterviewManager questionnaire = InterviewManager.getInstance(activity);
    final Question question = questionnaire.getCurrentQuestion();
    final PersonalNetwork network = PersonalNetwork.getInstance(activity);
    TextView title = new TextView(activity);
    title.setText(question.title());
    title.setTextSize(TypedValue.COMPLEX_UNIT_SP, 20f);
    questionContainer.addView(title);
    TextView text = new TextView(activity);
    String questionText = question.text();
    if (question.type() == InterviewManager.Q_ABOUT_ALTERS) {
      String altername = questionnaire.getCurrentFirstAlterName();
      questionText = questionText.replace("$$", altername);
    }
    if (question.type() == InterviewManager.Q_ALTER_ALTER_TIES) {
      String first = questionnaire.getCurrentFirstAlterName();
      String second = questionnaire.getCurrentSecondAlterName();
      questionText = questionText + "\n" + "Alter-alter pair: (" + first + ", " + second + ")";
    }
    text.setText(questionText);
    text.setTextSize(TypedValue.COMPLEX_UNIT_SP, 15f);
    questionContainer.addView(text);
    if (question.type() != InterviewManager.Q_NAME_GENERATOR) {
      int answerType = question.answerType();
      if (answerType == InterviewManager.ANSWER_TYPE_TEXT
          || answerType == InterviewManager.ANSWER_TYPE_NUMBER) {
        EditText textAnswer = DynamicViewManager.createSurveyAnswerEditText(activity);
        if (answerType == InterviewManager.ANSWER_TYPE_TEXT) {
          // TODO: choose alternatives
          // textAnswer.setInputType(InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
          textAnswer.setInputType(InputType.TYPE_CLASS_TEXT);
        }
        if (answerType == InterviewManager.ANSWER_TYPE_NUMBER) {
          textAnswer.setInputType(InputType.TYPE_CLASS_NUMBER);
        }
        String currentValue = null;
        if (question.type() == InterviewManager.Q_ABOUT_EGO)
          currentValue =
              network.getAttributeValueAt(
                  System.currentTimeMillis(), question.title(), Ego.getInstance());
        if (question.type() == InterviewManager.Q_ABOUT_ALTERS)
          currentValue =
              network.getAttributeValueAt(
                  System.currentTimeMillis(),
                  question.title(),
                  Alter.getInstance(questionnaire.getCurrentFirstAlterName()));
        ;
        if (question.type() == InterviewManager.Q_ALTER_ALTER_TIES)
          currentValue =
              network.getAttributeValueAt(
                  System.currentTimeMillis(),
                  question.title(),
                  AlterAlterDyad.getInstance(
                      questionnaire.getCurrentFirstAlterName(),
                      questionnaire.getCurrentSecondAlterName()));
        if (currentValue != null && !currentValue.equals(PersonalNetwork.VALUE_NOT_ASSIGNED))
          textAnswer.setText(currentValue);
        questionContainer.addView(textAnswer);
        if (textAnswer.requestFocus()) {
          InputMethodManager inputManager =
              (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
          inputManager.showSoftInput(textAnswer, InputMethodManager.SHOW_IMPLICIT);
        }
      }
      if (answerType == InterviewManager.ANSWER_TYPE_CHOICE) {
        String[] choices = question.answerChoiceTextValues();
        RadioGroup choicesGroup = new RadioGroup(activity);
        String currentValue = null;
        if (question.type() == InterviewManager.Q_ABOUT_EGO)
          currentValue =
              network.getAttributeValueAt(
                  System.currentTimeMillis(), question.title(), Ego.getInstance());
        if (question.type() == InterviewManager.Q_ABOUT_ALTERS)
          currentValue =
              network.getAttributeValueAt(
                  System.currentTimeMillis(),
                  question.title(),
                  Alter.getInstance(questionnaire.getCurrentFirstAlterName()));
        if (question.type() == InterviewManager.Q_ALTER_ALTER_TIES)
          currentValue =
              network.getAttributeValueAt(
                  System.currentTimeMillis(),
                  question.title(),
                  AlterAlterDyad.getInstance(
                      questionnaire.getCurrentFirstAlterName(),
                      questionnaire.getCurrentSecondAlterName()));
        for (int i = 0; i < choices.length; ++i) {
          RadioButton button = new RadioButton(activity);
          button.setText(choices[i]);
          button.setOnClickListener(
              new OnClickListener() {

                @Override
                public void onClick(View v) {
                  RadioButton clickedButton = (RadioButton) v;
                  if (clickedButton.isChecked()) {
                    String value = clickedButton.getText().toString();
                    if (question.type() == InterviewManager.Q_ABOUT_EGO) {
                      network.setAttributeValueAt(
                          TimeInterval.getRightUnboundedFromNow(),
                          question.title(),
                          Ego.getInstance(),
                          value);
                    }
                    if (question.type() == InterviewManager.Q_ABOUT_ALTERS) {
                      network.setAttributeValueAt(
                          TimeInterval.getRightUnboundedFromNow(),
                          question.title(),
                          Alter.getInstance(questionnaire.getCurrentFirstAlterName()),
                          value);
                    }
                    if (question.type() == InterviewManager.Q_ALTER_ALTER_TIES) {
                      // find out whether the value means adjacent or not
                      boolean adjacent = false;
                      Set<Integer> indicees = question.answerChoiceIndicees();
                      for (Integer index : indicees) {
                        if (question.answerChoiceTextValue(index).equals(value)) {
                          adjacent = question.answerChoiceAdjacent(index);
                        }
                      }
                      String a = questionnaire.getCurrentFirstAlterName();
                      String b = questionnaire.getCurrentSecondAlterName();
                      // in any case add the dyad attribute value (even if it means not adjacent)
                      network.setAttributeValueAt(
                          TimeInterval.getRightUnboundedFromNow(),
                          question.title(),
                          AlterAlterDyad.getInstance(a, b),
                          value);
                      if (!adjacent) {
                        network.removeTieAt(TimeInterval.getRightUnboundedFromNow(), a, b);
                      } else {
                        network.addToLifetimeOfTie(TimeInterval.getRightUnboundedFromNow(), a, b);
                      }
                    }
                  }
                }
              });
          choicesGroup.addView(button);
          if (currentValue != null && currentValue.equals(choices[i])) {
            button.setChecked(true);
          }
        }
        ScrollView choicesScrollView = new ScrollView(activity);
        choicesScrollView.addView(choicesGroup);
        questionContainer.addView(choicesScrollView);
      }
    } else { // name generator question
      LinearLayout addAlterLayout = new LinearLayout(activity);
      addAlterLayout.setOrientation(LinearLayout.HORIZONTAL);
      final EditText newAlterName = new EditText(activity);
      newAlterName.setInputType(
          InputType
              .TYPE_TEXT_FLAG_NO_SUGGESTIONS); // don't make suggestions, since names are not
                                               // necessarily in the dictionary
      newAlterName.setHint(R.string.new_alter_name_edit_text_hint);
      addAlterLayout.addView(newAlterName);
      Button addAlterButton = new Button(activity);
      addAlterButton.setText(R.string.add_alter_button_text);
      addAlterButton.setOnClickListener(
          new OnClickListener() {
            @Override
            public void onClick(View v) {
              String alterName = newAlterName.getText().toString();
              if (alterName != null && alterName.length() > 0) {
                network.addToLifetimeOfAlter(TimeInterval.getRightUnboundedFromNow(), alterName);
                questionnaire.addAlter(alterName);
                newAlterName.setText("");
                activity.updatePersonalNetworkViews();
              }
            }
          });
      addAlterLayout.addView(addAlterButton);
      questionContainer.addView(addAlterLayout);
      Button pickAlterButton = DynamicViewManager.createPickAlterButton(activity);
      pickAlterButton.setText(R.string.pick_alter_button_text);
      pickAlterButton.setOnClickListener(activity);
      questionContainer.addView(pickAlterButton);

      TextView altersView = new TextView(activity);
      ScrollView altersScrollView = new ScrollView(activity);
      String[] alterNames = questionnaire.getAlterNames();
      StringBuffer altersViewContent = new StringBuffer();
      if (alterNames != null) {
        for (int i = 0; i < alterNames.length; ++i) {
          altersViewContent.append(alterNames[i] + "\n");
        }
      }
      altersView.setText(altersViewContent.toString());
      altersScrollView.addView(altersView);
      questionContainer.addView(altersScrollView);
      if (newAlterName.requestFocus()) {
        InputMethodManager inputManager =
            (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
        inputManager.showSoftInput(newAlterName, InputMethodManager.SHOW_IMPLICIT);
      }
    }
  }