RadioListTile is not working with setstate - flutter

Question

What is working when i click on radio button it is not changing
class OnBoardingCheckBoxWithActionWidget extends StatefulWidget {
String label;
Function onClick;
OnBoardingCheckBoxWithActionWidget(this.label, {this.onClick});
#override
_OnBoardingCheckBoxWithActionWidgetState createState() =>
_OnBoardingCheckBoxWithActionWidgetState();
}
class _OnBoardingCheckBoxWithActionWidgetState
extends State<OnBoardingCheckBoxWithActionWidget> {
bool checked = true;
#override
Widget build(BuildContext context) {
return Card(
child: Padding(
padding: const EdgeInsets.all(8.0),
child: RadioListTile(
value: checked,
groupValue: checked,
toggleable: true,
title: Text("${widget.label}"),
onChanged: (val) {
if (widget.onClick != null) {
widget.onClick(val);
}
setState(() {
print("$checked");
checked = !checked;
print("$checked");
});
},
),
),
); // Card(child: Row(children: [Expanded(child: RadioListTile())],),);
}
}

Answer 1

You're trying to change some value from your Parent Stateful widget.
Try changing your current widget like
class OnBoardingCheckBoxWithActionWidget
extends StatelessWidget {
String label;
Function onClick;
var groupValue;
var buttonValue;
OnBoardingCheckBoxWithActionWidget(this.label, {this.onClick, this.groupValue,, this.buttonValue});
#override
Widget build(BuildContext context) {
return Card(
child: Padding(
padding: const EdgeInsets.all(8.0),
child: RadioListTile(
value: buttonValue,
groupValue: groupValue,
toggleable: true,
title: Text("${this.label}"),
onChanged: (val) {
if (this.onClick != null) {
this.onClick(val);
}
},
),
),
); // Card(child: Row(children: [Expanded(child: RadioListTile())],),);
}
}
And then call it like
OnBoardingCheckBoxWithActionWidget("Button1", onClick: (value){
setState((){
///Your Other Code
if(value){
groupValue = 'button1';
}
});
},
groupValue: someGroupValueVariableInState, buttonValue: 'button1')
Note that, the groupValue and buttonValue variables will always be some other variables other than booleans. When groupValue == buttonValue, the corresponding button will automatically marked as checked.