Create Check List Like iPhone Notes

Is this possible to make checklist like iPhone Notes? If user press delete/backspace button keyboard on empty textfield is also delete the checklist and if user press return button on keyboard that will add new checklist?

What I have done is still stuck in how to implement that. I have created class for textfield with checkbox and make an object from them to form class.

class SubTaskItem extends StatefulWidget {
  TextEditingController? textEditingController =
      TextEditingController(text: '');
  SubTaskItem({Key? key, this.textEditingController}) : super(key: key);

  @override
  _SubTaskItemState createState() => _SubTaskItemState();
}

class _SubTaskItemState extends State<SubTaskItem> {
  bool checkboxValue = false;

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    widget.textEditingController = TextEditingController(text: '');
  }

  @override
  Widget build(BuildContext context) {
    return CheckboxListTile(
      value: checkboxValue,
      onChanged: (val) {
        setState(() => checkboxValue = val!);
      },
      title: TextFormField(
        controller: widget.textEditingController,
        style: TextStyle(fontSize: 14.0),
      ),
      controlAffinity: ListTileControlAffinity.leading,
      activeColor: Colors.green,
    );
  }
}

on Class Form I add object for subTaskItem with this

List<SubTaskItem> listSubTaskItem = [];

  addSubTaskItem() {
    SubTaskItem subTaskItem = SubTaskItem();

    listSubTaskItem.add(subTaskItem);

    setState(() {});
  }

Do I need to implement getx for state management or is there any simply way to do that? Thanks