Flutter Tagging: Tagging not recognise - flutter

Question

I am trying to use Flutter tagging and planning to get and save to database.
I am using Flutter Tagging plugin. Here is the example which i am trying to replicate.
https://fluttercore.com/flutter-tagging-input-widget/
class Tagging extends StatefulWidget {
#override
_TaggingState createState() => _TaggingState();
}
class _TaggingState extends State<Tagging> {
final _scaffoldKey = GlobalKey<ScaffoldState>();
String _selectedValuesJson = 'Nothing to show';
List searchlists = [];
var dtguid;
var dtgname;
int count = 0;
var offset = 0;
String nodata;
#override
void initState() {
super.initState();
}
#override
void dispose() {
super.dispose();
}
String text = "Nothing to show";
#override
Widget build(BuildContext context) {
return Scaffold(
key: _scaffoldKey,
appBar: AppBar(
// title: Text(widget.title),
),
body: SingleChildScrollView(
child: Column(
children: <Widget>[
Padding(
padding: const EdgeInsets.all(8.0),
child: FlutterTagging(
textFieldDecoration: InputDecoration(
border: OutlineInputBorder(),
hintText: "Tags",
labelText: "Enter tags"),
addButtonWidget: _buildAddButton(),
chipsColor: Colors.pinkAccent,
chipsFontColor: Colors.white,
deleteIcon: Icon(Icons.cancel,color: Colors.white),
chipsPadding: EdgeInsets.all(2.0),
chipsFontSize: 14.0,
chipsSpacing: 5.0,
chipsFontFamily: 'helvetica_neue_light',
suggestionsCallback: (pattern) async {
return await TagSearchService.getSuggestions(pattern);
},
onChanged: (result) {
setState(() {
text = result.toString();
});
},
),
),
SizedBox(
height: 20.0,
),
Center(
child: Text(
text,
style: TextStyle(color: Colors.pink),
),
)
],
),
),
);
}
Widget _buildAddButton() {
return Container(
padding: EdgeInsets.all(8.0),
decoration: BoxDecoration(
borderRadius: BorderRadius.all(Radius.circular(20.0)),
color: Colors.pinkAccent,
),
child: Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Icon(
Icons.add,
color: Colors.white,
size: 15.0,
),
Text(
"Add New Tag",
style: TextStyle(color: Colors.white, fontSize: 14.0),
),
],
),
);
}
}
class TagSearchService {
static Future<List> getSuggestions(String query) async {
await Future.delayed(Duration(milliseconds: 400), null);
List<dynamic> tagList = <dynamic>[];
tagList.add({'name': "Flutter", 'value': 1});
tagList.add({'name': "HummingBird", 'value': 2});
tagList.add({'name': "Dart", 'value': 3});
List<dynamic> filteredTagList = <dynamic>[];
if (query.isNotEmpty) {
filteredTagList.add({'name': query, 'value': 0});
}
for (var tag in tagList) {
if (tag['name'].toLowerCase().contains(query)) {
filteredTagList.add(tag);
}
}
return filteredTagList;
}
}
For some reason it is giving error at below code.
FlutterTagging(
textFieldDecoration: InputDecoration(
border: OutlineInputBorder(),
hintText: "Tags",
labelText: "Enter tags"),
addButtonWidget: _buildAddButton(),
chipsColor: Colors.pinkAccent,
chipsFontColor: Colors.white,
deleteIcon: Icon(Icons.cancel,color: Colors.white),
chipsPadding: EdgeInsets.all(2.0),
chipsFontSize: 14.0,
chipsSpacing: 5.0,
chipsFontFamily: 'helvetica_neue_light',
suggestionsCallback: (pattern) async {
return await TagSearchService.getSuggestions(pattern);
},
onChanged: (result) {
Here is the picture.
I am using this version.
flutter_tagging: ^2.2.0+3

Answer 1

You can copy paste run full code below
Your code use flutter_tagging version 1.0.0, you can set in pubspec.yaml
Syntax error will disappear after set version
dependencies:
flutter:
sdk: flutter
flutter_tagging: 1.0.0
for latest version 2.2.0+3, you can directly use https://github.com/sarbagyastha/flutter_tagging/tree/master/example
working demo for version 1.0.0
full code
import 'package:flutter/material.dart';
import 'package:flutter_tagging/flutter_tagging.dart';
class Tagging extends StatefulWidget {
#override
_TaggingState createState() => _TaggingState();
}
class _TaggingState extends State<Tagging> {
final _scaffoldKey = GlobalKey<ScaffoldState>();
String _selectedValuesJson = 'Nothing to show';
List searchlists = [];
var dtguid;
var dtgname;
int count = 0;
var offset = 0;
String nodata;
#override
void initState() {
super.initState();
}
#override
void dispose() {
super.dispose();
}
String text = "Nothing to show";
#override
Widget build(BuildContext context) {
return Scaffold(
key: _scaffoldKey,
appBar: AppBar(
// title: Text(widget.title),
),
body: SingleChildScrollView(
child: Column(
children: <Widget>[
Padding(
padding: const EdgeInsets.all(8.0),
child: FlutterTagging(
textFieldDecoration: InputDecoration(
border: OutlineInputBorder(),
hintText: "Tags",
labelText: "Enter tags"),
addButtonWidget: _buildAddButton(),
chipsColor: Colors.pinkAccent,
chipsFontColor: Colors.white,
deleteIcon: Icon(Icons.cancel, color: Colors.white),
chipsPadding: EdgeInsets.all(2.0),
chipsFontSize: 14.0,
chipsSpacing: 5.0,
chipsFontFamily: 'helvetica_neue_light',
suggestionsCallback: (pattern) async {
return await TagSearchService.getSuggestions(pattern);
},
onChanged: (result) {
setState(() {
text = result.toString();
});
},
),
),
SizedBox(
height: 20.0,
),
Center(
child: Text(
text,
style: TextStyle(color: Colors.pink),
),
)
],
),
),
);
}
Widget _buildAddButton() {
return Container(
padding: EdgeInsets.all(8.0),
decoration: BoxDecoration(
borderRadius: BorderRadius.all(Radius.circular(20.0)),
color: Colors.pinkAccent,
),
child: Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Icon(
Icons.add,
color: Colors.white,
size: 15.0,
),
Text(
"Add New Tag",
style: TextStyle(color: Colors.white, fontSize: 14.0),
),
],
),
);
}
}
class TagSearchService {
static Future<List> getSuggestions(String query) async {
await Future.delayed(Duration(milliseconds: 400), null);
List<dynamic> tagList = <dynamic>[];
tagList.add({'name': "Flutter", 'value': 1});
tagList.add({'name': "HummingBird", 'value': 2});
tagList.add({'name': "Dart", 'value': 3});
List<dynamic> filteredTagList = <dynamic>[];
if (query.isNotEmpty) {
filteredTagList.add({'name': query, 'value': 0});
}
for (var tag in tagList) {
if (tag['name'].toLowerCase().contains(query)) {
filteredTagList.add(tag);
}
}
return filteredTagList;
}
}
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: Tagging(),
);
}
}