flutter_multiselect 0.1.0 flutter_multiselect: ^0.1.0 copied to clipboard
Flutter package for multi-select UI widget, that compatible to both iOS and Android and uses neutral design.
import 'package:flutter/material.dart';
import 'package:flutter_multiselect/flutter_multiselect.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
// This is the theme of your application.
//
// Try running your application with "flutter run". You'll see the
// application has a blue toolbar. Then, without quitting the app, try
// changing the primarySwatch below to Colors.green and then invoke
// "hot reload" (press "r" in the console where you ran "flutter run",
// or simply save your changes to "hot reload" in a Flutter IDE).
// Notice that the counter didn't reset back to zero; the application
// is not restarted.
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'Flutter Demo - Multiselect'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
// This widget is the home page of your application. It is stateful, meaning
// that it has a State object (defined below) that contains fields that affect
// how it looks.
// This class is the configuration for the state. It holds the values (in this
// case the title) provided by the parent (in this case the App widget) and
// used by the build method of the State. Fields in a Widget subclass are
// always marked "final".
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
final GlobalKey<FormState> _formKey = new GlobalKey<FormState>();
@override
Widget build(BuildContext context) {
// This method is rerun every time setState is called, for instance as done
// by the _incrementCounter method above.
//
// The Flutter framework has been optimized to make rerunning build methods
// fast, so that you can just rebuild anything that needs updating rather
// than having to individually change instances of widgets.
return Scaffold(
appBar: AppBar(
// Here we take the value from the MyHomePage object that was created by
// the App.build method, and use it to set our appbar title.
title: Text(widget.title),
),
body: Center(
// Center is a layout widget. It takes a single child and positions it
// in the middle of the parent.
child: new Form(
key: _formKey,
autovalidate: true,
child: Column(
// Column is also layout widget. It takes a list of children and
// arranges them vertically. By default, it sizes itself to fit its
// children horizontally, and tries to be as tall as its parent.
//
// Invoke "debug painting" (press "p" in the console, choose the
// "Toggle Debug Paint" action from the Flutter Inspector in Android
// Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
// to see the wireframe for each widget.
//
// Column has various properties to control how it sizes itself and
// how it positions its children. Here we use mainAxisAlignment to
// center the children vertically; the main axis here is the vertical
// axis because Columns are vertical (the cross axis would be
// horizontal).
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
new MultiSelect(
autovalidate: false,
titleText: 'Country of Residence',
validator: (value) {
if (value == null) {
return 'Please select one or more option(s)2';
}
},
errorText: 'Please select one or more option(s)1',
dataSource: [
{
"display": "Australia",
"value": 1,
},
{
"display": "Canada",
"value": 2,
},
{
"display": "India",
"value": 3,
},
{
"display": "United States",
"value": 4,
}
],
textField: 'display',
valueField: 'value',
filterable: true,
required: true,
value: null,
onSaved: (value) {
print('The value is $value');
}),
SizedBox(
width: 10.0,
),
RaisedButton(
child: Text('Save'),
color: Colors.white,
onPressed: () {
_onFormSaved();
},
)
],
),
))
// This trailing comma makes auto-formatting nicer for build methods.
);
}
void _onFormSaved() {
final FormState form = _formKey.currentState;
form.save();
}
}