@Override
  public void setBinaryData(Object answer) {
    String s = (String) answer;
    mStringAnswer.setText(s);

    mAnswerDisplay.setText(s);
    Collect.getInstance().getFormController().setIndexWaitingForData(null);
  }
 @Override
 public void cancelWaitingForBinaryData() {
   Collect.getInstance().getFormController().setIndexWaitingForData(null);
 }
 @Override
 public boolean isWaitingForBinaryData() {
   return mPrompt
       .getIndex()
       .equals(Collect.getInstance().getFormController().getIndexWaitingForData());
 }