Flutter - Get checkbox feedback when modifying in another class - flutter

Question

Guys, I created some checkboxes in another class to avoid the refrash when I modify them, but I can't get the check back. Can someone help me?
I will leave the code below ..
on my main page, I call the class containing the checkboxes like this ..
I tried every possible way and I can't get the checkbox value on my main page
**//here I call the click event on my main page**
TipoPagamento(
onChanged: (v) {
setState(() {
print(v);
});
}
),
//**this is where i set up my checkbox.**
import 'package:flutter/material.dart';
class TipoPagamento extends StatefulWidget {
#override
_TipoPagamentoState createState() => _TipoPagamentoState();
final ValueChanged<int> onChanged;
const TipoPagamento({Key key,#required this.onChanged}) : super(key: key);
}
class _TipoPagamentoState extends State<TipoPagamento> {
TextEditingController nameController = TextEditingController();
int _radioValue = 0;
#override
_handleRadioValueChange(int value) {
setState(() {
_radioValue = value;
switch (_radioValue) {
case 1:
break;
case 2:
break;
case 3:
break;
}
});
return(_radioValue);
}
#override
Widget build(BuildContext context) {
return buildTextField();
}
Widget buildTextField() {
return new Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
new Radio(
value: 1,
groupValue: _radioValue,
onChanged: _handleRadioValueChange,
),
new Text(
'Débito',
style: new TextStyle(fontSize: 16.0),
),
new Radio(
value: 2,
groupValue: _radioValue,
onChanged: _handleRadioValueChange,
),
new Text(
'Crédito',
style: new TextStyle(
fontSize: 16.0,
),
),
new Radio(
value: 3,
groupValue: _radioValue,
onChanged: _handleRadioValueChange,
),
new Text(
'Dinheiro',
style: new TextStyle(fontSize: 16.0),
),
],
);
}
}

Answer 1

You can copy paste run full code below
You can call widget.onChanged(_radioValue); in _handleRadioValueChange
code snippet
_handleRadioValueChange(int value) {
setState(() {
_radioValue = value;
switch (_radioValue) {
case 1:
break;
case 2:
break;
case 3:
break;
}
});
widget.onChanged(_radioValue);
return (_radioValue);
}
working demo
output of working demo
I/flutter ( 6880): v 1
I/flutter ( 6880): v 2
full code
import 'package:flutter/material.dart';
class TipoPagamento extends StatefulWidget {
#override
_TipoPagamentoState createState() => _TipoPagamentoState();
final ValueChanged<int> onChanged;
const TipoPagamento({Key key, #required this.onChanged}) : super(key: key);
}
class _TipoPagamentoState extends State<TipoPagamento> {
TextEditingController nameController = TextEditingController();
int _radioValue = 0;
_handleRadioValueChange(int value) {
setState(() {
_radioValue = value;
switch (_radioValue) {
case 1:
break;
case 2:
break;
case 3:
break;
}
});
widget.onChanged(_radioValue);
return (_radioValue);
}
#override
Widget build(BuildContext context) {
return buildTextField();
}
Widget buildTextField() {
return Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Radio(
value: 1,
groupValue: _radioValue,
onChanged: _handleRadioValueChange,
),
Text(
'Débito',
style: TextStyle(fontSize: 16.0),
),
Radio(
value: 2,
groupValue: _radioValue,
onChanged: _handleRadioValueChange,
),
Text(
'Crédito',
style: TextStyle(
fontSize: 16.0,
),
),
Radio(
value: 3,
groupValue: _radioValue,
onChanged: _handleRadioValueChange,
),
Text(
'Dinheiro',
style: TextStyle(fontSize: 16.0),
),
],
);
}
}
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: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
#override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
void _incrementCounter() {
setState(() {
_counter++;
});
}
#override
void initState() {
super.initState();
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
TipoPagamento(onChanged: (v) {
setState(() {
print("v $v");
});
}),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
),
);
}
}