Generating a list of choice chips inside a column - flutter

Question

I have an array of strings, which I'm trying to display as choice chips.
I saw the doc of the flutter website (here: https://api.flutter.dev/flutter/material/ChoiceChip-class.html) and I copied it to try and use it in my application.
This is what I have:
Widget categoriesList(BuildContext context) {
return Wrap(
children: [
List<Widget>.generate(
options.length,
(int idx) {
return ChoiceChip(
label: Text(options[idx]),
selected: _value == idx,
onSelected: (bool selected) {
setState(() {
_value = selected ? idx : null;
});
});
},
).toList()
],
);
}
#override
Widget build(BuildContext context) {
return Container(
child: Column(
children: [
Title(),
categoriesList(context),
],
),
);
}
}
The problem is that I always get in categoriesList this error:
The element type 'List<Widget>' can't be assigned to the list type 'Widget'.
I tried to search, and this error seems really common, but I can't really tell what's wrong with the piece of code I have - even after seeing answers that was flagged as correct. And also, this piece of code is from the flutter docs, so I guess it should be fine.
What am I missing?

Answer 1

.toList() automatically generates the List, I can see theres [] in which you parsed the list of widgets.
Simply remove the [], like below:
return Wrap(
children: List<Widget>.generate(
options.length,
(int idx) {
return ChoiceChip(
label: Text(options[idx]),
selected: _value == idx,
onSelected: (bool selected) {
setState(() {
_value = selected ? idx : null;
});
});
},
).toList(),
);