
This flutter tutorial post is multi select choice chip in flutter.
- programmingList: Total 5 languages
1) Fluuter Tutorial
2) Java
3) PHP
4) C++
5) C
You can expert, select lanaguage. - Multi Select Chip Click open the alert dialog, here choice your language. If you can select 2 language Flutter Tutorial 2) C press button Expert after flutter diaglog close. Display your expert language in comma separeted.
Multi Select Chip in Flutter :
main.dart
import 'package:flutter/material.dart'; void main() => runApp(MyApp()); class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( title: 'Flutter Tutorial', theme: ThemeData( primarySwatch: Colors.blue, ), home: MyHomePage(title: 'Flutter MultiSelectChip'), ); } } class MyHomePage extends StatefulWidget { MyHomePage({Key key, this.title}) : super(key: key); final String title; @override _MyHomePageState createState() => _MyHomePageState(); } class _MyHomePageState extends State<MyHomePage> { List<String> programmingList = [ "Fluuter Tutorial", "Java", "PHP", "C++", "C" ]; List<String> selectedProgrammingList = List(); _showDialog() { showDialog( context: context, builder: (BuildContext context) { //Here we will build the content of the dialog return AlertDialog( title: Text("Flutter Choice Chip"), content: MultiSelectChip( programmingList, onSelectionChanged: (selectedList) { setState(() { selectedProgrammingList = selectedList; }); }, ), actions: <Widget>[ FlatButton( child: Text("Report"), onPressed: () => Navigator.of(context).pop(), ) ], ); }); } @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text(widget.title), ), body: Center( child: Column( mainAxisAlignment: MainAxisAlignment.center, crossAxisAlignment: CrossAxisAlignment.center, children: <Widget>[ RaisedButton( child: Text("Multi Select Chip Click"), onPressed: () => _showDialog(), ), Text(selectedProgrammingList.join(", ")), ], ), ), ); } } class MultiSelectChip extends StatefulWidget { final List<String> reportList; final Function(List<String>) onSelectionChanged; MultiSelectChip(this.reportList, {this.onSelectionChanged}); @override _MultiSelectChipState createState() => _MultiSelectChipState(); } class _MultiSelectChipState extends State<MultiSelectChip> { List<String> selectedChoices = List(); _buildChoiceList() { List<Widget> choices = List(); widget.reportList.forEach((item) { choices.add(Container( padding: const EdgeInsets.all(2.0), child: ChoiceChip( label: Text(item), selected: selectedChoices.contains(item), onSelected: (selected) { setState(() { selectedChoices.contains(item) ? selectedChoices.remove(item) : selectedChoices.add(item); widget.onSelectionChanged(selectedChoices); }); }, ), )); }); return choices; } @override Widget build(BuildContext context) { return Wrap( children: _buildChoiceList(), ); } }
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