code: public String getPinResults() {
  
          String pinResults = "";
          for (int i = 0; i < mNumberPinBoxes; i++) {
              String pinBoxValue = getPinBox(i).getText().toString();
              if (pinBoxValue.isEmpty()) {
                  pinBoxValue = " ";
              }
              pinResults += pinBoxValue;
          }
          return pinResults;
      }
docs: Get {@link PinView} current value.
  
  @return a string with PinBoxes values