I'm using the RadioListTile widget in my application and I want to disable changing the value after some condition is satisfied. and there is no isButtonDisabled prop just like in Radio widget. how can I disable this widget(stop the value from changing)?
By the time I was writing the above statement I figured it out and it was easy.
so Ill post the question and will answer it below.
import 'package:flutter/material.dart';
class Body extends StatefulWidget {
@override
_BodyState createState() => _BodyState();
}
class _BodyState extends State<Body> {
bool evaluate = false;
int value;
@override
Widget build(BuildContext context) {
return Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: MainAxisAlignment.start,
children: [
RadioListTile<int>(
value: 0,
isThreeLine: false,
title: Text(
'radio 1',
style: TextStyle(
fontWeight: FontWeight.bold,
),
),
groupValue: value,
onChanged: (value) => evaluate ? null : value = 0,
activeColor: Colors.green,
),
RadioListTile<int>(
value: 1,
isThreeLine: false,
title: Text(
'radio 2',
style: TextStyle(
fontWeight: FontWeight.bold,
),
),
groupValue: value,
onChanged: (value) => evaluate ? null : value = 1,
activeColor: Colors.green,
),
InkWell(
onTap: () {
evaluate = true;
},
child: Container(
child: Center(
child: Text(
'Submit answer',
),
),
),
)
],
);
}
}
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