Flutter: How to select multiple options in checkboxlisttile - flutter

Question

class PickLabelScreen extends StatefulWidget {
const PickLabelScreen({
Key? key,
required this.labelTitle,
}) : super(key: key);
final String labelTitle;
#override
State<PickLabelScreen> createState() => _PickLabelScreenState();
}
class _PickLabelScreenState extends State<PickLabelScreen> {
late String _labelChoosed;
#override
void initState() {
super.initState();
_labelChoosed = widget.labelTitle;
}
#override
Widget build(BuildContext context) {
return WillPopScope(
onWillPop: () async {
Navigator.of(context).pop(_labelChoosed);
return false;
},
child: Scaffold(
appBar: AppBar(
leading: IconButton(
icon: const Icon(
Icons.arrow_back,
),
onPressed: () {
Navigator.of(context).pop(_labelChoosed);
},
),
actions: [
IconButton(
onPressed: () async {
final String newLabel = await showDialog(
context: context,
barrierDismissible: false,
builder: (context) => const DialogLabelWidget(),
);
setState(() {
if (newLabel.isNotEmpty) _labelChoosed = newLabel;
});
},
icon: const Icon(Icons.add),
),
],
),
body: Consumer<LabelProvider>(
builder: (context, labelProvider, child) =>
labelProvider.items.isEmpty
? child!
: ListView.builder(
itemBuilder: (context, index) {
final currentLabel = labelProvider.items[index];
return CheckboxListTile(
value: _labelChoosed == currentLabel.title,
title: Text(
currentLabel.title,
style: TextStyleConstants.titleStyle3,
),
secondary: const Icon(Icons.label_outline),
onChanged: (value) {
setState(() {
if (value == true) {
_labelChoosed = currentLabel.title;
} else {
_labelChoosed = '';
}
});
},
activeColor: ColorsConstant.blueColor,
);
},
itemCount: labelProvider.items.length,
),
child: const SizedBox.shrink(),
),
),
);
}
}
This is a flutter note app, and I am trying to label the notes.
Can anyone tell me how to select several options to label notes?
This code can create multiple options with dialoge, but cannot click them at once.
What I want is to create, select more than one checkbox, and save them to database.
Here is pick_label_screen.dart code.