Flutter Radio Button Example Tutorial

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Hi Guys,

In this blog, I will explain you how to create radio button in flutter. You can easily create radio button in flutter.First i will import package:flutter/material.dart , after I will make radio button using Container in Radio in flutter.

Here, I will give you full example for simply display radio button using flutter as bellow.

Example- Complete flutter radio button source code for main.dart file

In this step, You will open main.dart and Create a Container widget then put the radio button widget inside it.

import 'package:flutter/material.dart';
void main() {
  runApp(MyApp());
}
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Nicesnippets',
      theme: ThemeData(
        primarySwatch: Colors.red,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: 'Welcome to Nicesnippets'),
    );
  }
}
class MyHomePage extends StatefulWidget {
  @override
  MyHomePage({Key key, this.title}) : super(key: key);
  final String title;
  State createState() => State();
}
class _State extends State {
  TextEditingController nameController = TextEditingController();
  int _radioValue = 0;
  void _handleRadioValueChange(int value) {
    setState(() {
      _radioValue = value;
      switch (_radioValue) {
        case 0:
          break;
        case 1:
          break;
        case 2:
          break;
      }
    });
  }
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: Text('Welcome to Nicesnippets'),
        ),
        body: Padding(
            padding: EdgeInsets.all(10),
            child: ListView(
              children: [
                Container(
                    alignment: Alignment.center,
                    padding: EdgeInsets.all(10),
                    margin: const EdgeInsets.only(top: 50),
                    child: Text(
                      'Radio Button',
                      style: TextStyle(
                          color: Colors.red,
                          fontWeight: FontWeight.w500,
                          fontSize: 30),
                    )),
                new Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    new Radio(
                      value: 0,
                      groupValue: _radioValue,
                      onChanged: _handleRadioValueChange,
                    ),
                    new Text(
                      'First',
                      style: new TextStyle(fontSize: 16.0),
                    ),
                    new Radio(
                      value: 1,
                      groupValue: _radioValue,
                      onChanged: _handleRadioValueChange,
                    ),
                    new Text(
                      'Second',
                      style: new TextStyle(
                        fontSize: 16.0,
                      ),
                    ),
                    new Radio(
                      value: 2,
                      groupValue: _radioValue,
                      onChanged: _handleRadioValueChange,
                    ),
                    new Text(
                      'Last',
                      style: new TextStyle(fontSize: 16.0),
                    ),
                  ],
                ),
                Container(
                    height: 50,
                    padding: EdgeInsets.fromLTRB(10, 0, 10, 0),
                    child: RaisedButton(
                      textColor: Colors.white,
                      color: Colors.red,
                      child: Text('Button'),
                      onPressed: () {
                        print(nameController.text);
                      },
                    )),
              ],
            )));
  }
}

Output

It will help you...