What I Currently Have
What I want to achieve
The Code that I have now
Radio(
value: 2,
groupValue: val,
onChanged: (value) {
setState(() {
val = value;
});
},
activeColor: secondaryColor,)
It's not possible to customize that much the Radio button. The only color parameter for the button is fillColor. It will impact both the inner plain circle and the outer circle.
If you really want a custom look you'll need to build your own widget. Here is a simple example that you can customize and improve. You could also try to start from the source code of the flutter Radio widget.
class CustomRadio extends StatefulWidget {
final int value;
final int groupValue;
final void Function(int) onChanged;
const CustomRadio({Key? key, required this.value, required this.groupValue, required this.onChanged})
: super(key: key);
@override
_CustomRadioState createState() => _CustomRadioState();
}
class _CustomRadioState extends State<CustomRadio> {
@override
Widget build(BuildContext context) {
bool selected = (widget.value == widget.groupValue);
return InkWell(
onTap: () => widget.onChanged(widget.value),
child: Container(
margin: const EdgeInsets.all(4),
padding: const EdgeInsets.all(4),
decoration: BoxDecoration(shape: BoxShape.circle, color: selected ? Colors.white : Colors.grey[200]),
child: Icon(
Icons.circle,
size: 30,
color: selected ? Colors.deepPurple : Colors.grey[200],
),
),
);
}
}
Result :