transfer data from one widget to the whole project in Flutter - flutter

Question

I have some Radios and i want to take some different String based on which Radio is selected.
These Radios are located in another file, and there are several files which i want to take data and bring to my main file and than to save these data into my cloud firebase.
I created another file to store all these Informations but i cant save these data into this class. Can u show me some ways how can i do that?
//this is my informations class
class Informations {
String nom;
String lieu;
String type;
String typDePlonge;
String topographie;
String temperatureEau;
String courant;
String visibilite;
String niveauRequis;
String autonomie;
String quandPlonger;
String requin;
String mammifere;
String reptile;
String crustace;
String raie;
String limace;
String cephalopode;
String corail;
String poissonPelagique;
String poissonDeRecif;
String poissonDeFond;
String vmAutres;
String niveauAcceptes;
String activitesProposes;
String photo;
Informations(
{this.type,
this.nom,
this.photo,
this.activitesProposes,
this.autonomie,
this.cephalopode,
this.corail,
this.courant,
this.crustace,
this.lieu,
this.limace,
this.mammifere,
this.niveauAcceptes,
this.niveauRequis,
this.poissonDeFond,
this.poissonDeRecif,
this.poissonPelagique,
this.quandPlonger,
this.raie,
this.reptile,
this.requin,
this.temperatureEau,
this.topographie,
this.typDePlonge,
this.visibilite,
this.vmAutres});
}
//this is where i have my data.
//For each radio selected i want to take that string which is near the radio,
//the string which is shown at the text widget.
class ActivitesProposes extends StatefulWidget {
const ActivitesProposes({Key key}) : super(key: key);
#override
_ActivitesProposesState createState() => _ActivitesProposesState();
}
class _ActivitesProposesState extends State<ActivitesProposes> {
bool isStrechedActivities = false;
int groupValueActivities = 0;
void handleGroupValueActivities(int value) {
setState(() {
groupValueActivities = value;
});
}
#override
Widget build(BuildContext context) {
return new Padding(
padding: EdgeInsets.fromLTRB(20, 10, 20, 0),
child: Container(
// height: double.infinity,
width: double.infinity,
child: Padding(
padding: const EdgeInsets.all(2.0),
child: Column(
mainAxisSize: MainAxisSize.max,
children: [
Row(
mainAxisSize: MainAxisSize.max,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Expanded(
child: Container(
decoration: BoxDecoration(
border: GradientBorder.uniform(
width: 3.0,
gradient: LinearGradient(colors: <Color>[
Color(0xff59a5da),
Color(0xff60af6c)
], stops: [
0.3,
0.5
])),
borderRadius: BorderRadius.circular(30.0),
),
child: Column(
children: [
Container(
height: 45,
width: double.infinity,
padding: EdgeInsets.only(right: 10),
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topLeft,
end: Alignment.bottomRight,
colors: <Color>[
Color(0xff59a5da),
Color(0xff60af6c),
]),
borderRadius: BorderRadius.all(
Radius.circular(25))),
constraints: BoxConstraints(
minHeight: 45,
minWidth: double.infinity,
),
alignment: Alignment.center,
child: Row(
mainAxisAlignment:
MainAxisAlignment.spaceBetween,
children: [
Expanded(
child: Padding(
padding:
const EdgeInsets.symmetric(
horizontal: 10,
vertical: 10),
child: Text(
'Activités proposées',
style: new TextStyle(
fontSize: 20,
color: Colors.white,
decorationThickness: 3.0,
fontWeight: FontWeight.w900,
),
),
),
),
Padding(
padding: const EdgeInsets.all(0.0),
child: GestureDetector(
onTap: () {
setState(() {
isStrechedActivities =
!isStrechedActivities;
});
},
child: Icon(
isStrechedActivities
? Icons.keyboard_arrow_up
: Icons.keyboard_arrow_down,
color: Colors.white,
size: 40,
),
),
),
],
),
),
ExpandedSectionThreeRows(
expand: isStrechedActivities,
height: 100,
child: Padding(
padding: const EdgeInsets.symmetric(
horizontal: 18.0),
child: Container(
color: Colors.white70,
child: ListView(
padding: EdgeInsets.all(0),
shrinkWrap: true,
children: [
//controller: scrollController2,
Row(
children: [
Radio(
value: 0,
groupValue:
groupValueActivities,
onChanged:
handleGroupValueActivities),
new Text('cours plongée',
style: new TextStyle(
color:
groupValueActivities ==
0
? Colors.blue
.shade900
: Colors.black,
)),
],
),
Row(
children: [
Radio(
value: 1,
groupValue:
groupValueActivities,
onChanged:
handleGroupValueActivities),
new Text('sortie bateau',
style: new TextStyle(
color:
groupValueActivities ==
1
? Colors.blue
.shade900
: Colors
.black)),
],
),
Row(
children: [
Radio(
value: 2,
groupValue:
groupValueActivities,
onChanged:
handleGroupValueActivities),
new Text(
'location équipement',
style: new TextStyle(
color:
groupValueActivities ==
2
? Colors.blue
.shade900
: Colors.black,
)),
],
),
],
),
),
),
),
],
),
))
],
),
],
),
)),
);
}
}
//The button where im gonna register these data is on another file.

Answer 1

i fixed this really easy, i dont know why i wrote this question here anyway XD.
here is the code:
final informations = Informations();//added a reference for my informations class
// at the function of my radio i added this code and based on what radio
// is selected i add a diff text to my Informations class variable
void handleGroupValueActivities(int value) {
setState(() {
groupValueActivities = value;
if (groupValueActivities == 0){
informations.activitesProposes = 'cours plongee';
}else if(groupValueActivities == 1){
informations.activitesProposes = 'sortie bateau';
}else if(groupValueActivities == 2){
informations.activitesProposes = 'location equipment';
}else {
infromations.activitesProposes = null;
}// and if none of them is selected i return null.
print(informations.activitesProposes);
});
}