List from json API response - flutter

Question

I'm trying to use https://pub.dev/packages/flappy_search_bar#-readme-tab- to create a list of data which I plan on getting from an api(just testing now), but I can't seem to add the list created from the response json to the search widget.
The argument type 'Future<List<Album>> Function()' can't be assigned to the parameter type 'Future<List<Album>> Function(String)'.
class Album {
final int userId;
final int id;
final String title;
Album({this.userId, this.id, this.title});
factory Album.fromJson(Map<String, dynamic> json) {
return Album(
userId: json['userId'],
id: json['id'],
title: json['title'],
);
}
}
Future<List<Album>> fetchAlbum() async {
final response =
await http.get('https://jsonplaceholder.typicode.com/albums/1');
if (response.statusCode == 200) {
// If the server did return a 200 OK response,
// then parse the JSON.
List jsonResponse = json.decode(response.body);
return jsonResponse.map((job) => Album.fromJson(job)).toList();
} else {
// If the server did not return a 200 OK response,
// then throw an exception.
throw Exception('Failed to load album');
}
}
#override
Widget build(BuildContext context) {
return Expanded(
child: Padding(
padding: const EdgeInsets.all(8.0),
child: SearchBar<Album>(
onSearch: fetchAlbum, <------ error here
onItemFound: (Album post, int index) {
return ListTile(
onTap: () => widget.setProviderData(post.title),
title: Text(post.title),
subtitle: Text(post.id.toString()),
);
},
),
),
);
}
Can anyone help me with this, please?

Answer 1

I can't test your code right now, but at first glance the problem is onSearch expects a function that gets String parameter and your code doesn't provide it.
You should modify this line Future<List<Album>> fetchAlbum() async as follows:
Future<List<Album>> fetchAlbum(String album) async