onChange method

dynamic onChange({ required int currentIndex, })

Implementation

onChange({
  required int currentIndex,
}) {
  final ct = otpFieldControllers[currentIndex];
  // if (currentIndex > 0) {}
  if (ct.text.isEmpty) {
    _removeText();
    if (currentIndex > 0) {
      focusNodes[currentIndex - 1].requestFocus();
    }
  } else {
    _addText(ct.text);
    if (currentIndex < widget.otpCount - 1) {
      focusNodes[currentIndex + 1].requestFocus();
    } else {
      focusNodes[currentIndex].unfocus();
      widget.onSubmit!(controller.text);
    }
  }
}