What is the method to create CheckBoxListTile items that are editable by the user, allowing for additions and deletions?

edit

One way to create editable CheckBoxListTile items in Flutter is to use a StatefulWidget and a List of data to keep track of the CheckboxListTile items. Here's an example of how to do it:

1. Create a StatefulWidget that has a List of data to keep track of the CheckBoxListTile items:

class EditableCheckBoxListTile extends StatefulWidget {
  @override
  _EditableCheckBoxListTileState createState() => _EditableCheckBoxListTileState();
}

class _EditableCheckBoxListTileState extends State<EditableCheckBoxListTile> {
  List<String> _items = ['Item 1', 'Item 2', 'Item 3'];

1. Create a ListView.builder to render the CheckBoxListTile items:

ListView.builder(
  itemCount: _items.length,
  itemBuilder: (BuildContext context, int index) {
    return CheckboxListTile(
      title: Text(_items[index]),
      value: false,
      onChanged: null,
    );
  },
),

1. Add a TextField widget and a RaisedButton widget at the bottom of the ListView.builder to allow user input:

ListView.builder(
  itemCount: _items.length,
  itemBuilder: (BuildContext context, int index) {
    return CheckboxListTile(
      title: Text(_items[index]),
      value: false,
      onChanged: null,
    );
  },
),
TextField(
  decoration: InputDecoration(hintText: 'Add new item'),
  onSubmitted: (text) {
    setState(() {
      _items.add(text);
    });
  },
),
RaisedButton(
  child: Text('Delete'),
  onPressed: () {
    setState(() {
      _items.removeWhere((item) => item.selected);
    });
  },
),

1. Add an onChanged callback to the CheckboxListTile that updates the value of the item in the List:

ListView.builder(
  itemCount: _items.length,
  itemBuilder: (BuildContext context, int index) {
    return CheckboxListTile(
      title: Text(_items[index]),
      value: _itemsSelected.contains(index),
      onChanged: (value) {
        setState(() {
          if (value) {
            _itemsSelected.add(index);
          } else {
            _itemsSelected.remove(index);
          }
        });
      },
    );
  },
),

1. Add logic to the onPressed callback of the RaisedButton to remove the selected items:

RaisedButton(
  child: Text('Delete'),
  onPressed: () {
    setState(() {
      _itemsSelected.sort();
      _itemsSelected.reversed.forEach((index) {
        _items.removeAt(index);
      });
      _itemsSelected.clear();
    });
  },
),

With these steps, you can create a CheckBoxListTile widget that allows user input and deletion of items.