Flutter rebuild parent screen with provider on navigator push - flutter

Question

I want to create a license validation system for my application in order to activate it if a license is entered or already present.
If when starting the application the license does not exist then I display a page which allows me to scan it by QR code.
If the scanned license is valid then I push a success page with a button on it that allows me to unlock the application. When I click on this button I want to close my success page and rebuild my application with the homepage of the application unlocked.
This works up to the success page. When I click on my button to unblock the app, I can't rebuild the parent page with the unblock app.
MyApp: This change choose the screen if I have a license or not.
class AppScreen extends StatelessWidget {
const AppScreen({Key key}) : super(key: key);
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Impact',
debugShowCheckedModeBanner: false,
theme: AppTheme().data,
home: ChangeNotifierProvider<LicenseNotifier>(
create: (BuildContext context) => LicenseNotifier(),
child: Consumer(
builder: (context, LicenseNotifier license, _) {
return license.showScreenWithLicenseState();
},
),
),
);
}
}
My license notifier:
class LicenseNotifier with ChangeNotifier {
LicenseState state = LicenseState.Uninitialized;
String getLicenseInApp;
String licenseScanned;
String personnalKey;
final String _scanBarColor = "#f57873";
LicenseNotifier(){
personnalKey = "1010";
_checkIfAppIsUnlocked();
}
Future<void> _checkIfAppIsUnlocked() async {
if (getLicenseInApp != null) {
state = LicenseState.Authenticated;
}
else{
state = LicenseState.Unauthenticated;
}
notifyListeners();
}
Future scanQRCode(BuildContext context) async{
await FlutterBarcodeScanner.scanBarcode(_scanBarColor, "Cancel", true, ScanMode.QR).then((value) {
licenseScanned = value.toString();
});
licenseValidator(context);
}
void licenseValidator(BuildContext context){
if(licenseScanned == personnalKey){
showSuccessLicenseScreen(context);
}
notifyListeners();
}
void showSuccessLicenseScreen(BuildContext context){
Navigator.push(context, MaterialPageRoute(
builder: (context) => ChangeNotifierProvider<LicenseNotifier>(
create: (BuildContext context) => LicenseNotifier(),
child: LicenseSuccessScreen(title: "Valid license")
),
));
}
activateApp(BuildContext context) {
Navigator.pop(context);
state = LicenseState.Authenticated;
notifyListeners();
}
showScreenWithLicenseState(){
switch (state) {
case LicenseState.Uninitialized:
return SplashScreen();
break;
case LicenseState.Unauthenticated:
case LicenseState.Authenticating:
return LicenseActivationScreen(title: "Activate license");
break;
case LicenseState.Authenticated:
return ChangeNotifierProvider<BottomNavigationBarNotifier>(
create: (BuildContext context) => BottomNavigationBarNotifier(),
child: NavigationBarScreen(),
);
break;
}
return null;
}
}
My success screen: When I scan a valid license
class LicenseSuccessScreen extends StatelessWidget{
final String title;
const LicenseSuccessScreen({Key key, this.title}) : super(key: key);
#override
Widget build(BuildContext context)
{
return GestureDetector(
onTap: (() => FocusScope.of(context).requestFocus(FocusNode())),
child: Scaffold(
appBar: AppBar(
backgroundColor: AppColors.colorContrastGreen,
elevation: 0,
centerTitle: true,
title: Text(title),
),
body : _buildBody(context),
),
);
}
Widget _buildBody(BuildContext context)
{
var _licenseProvider = Provider.of<LicenseNotifier>(context);
return Container(
color: AppColors.colorContrastGreen,
padding: EdgeInsets.symmetric(horizontal: AppUi.RATIO * 5),
height: double.infinity,
child: Column(
children: [
ContainerComponent(
background: AppColors.colorBgLight,
alignement: CrossAxisAlignment.center,
children: [
ButtonComponent.primary(
context: context,
text: "Débloquer",
onPressed: () async{
_licenseProvider.activateApp(context);
},
),
],
),
],
),
);
}
}
So when I click on my button who call "activateApp" in notifier, the success screen closes but I haven't my application content. It just show the LicenseActivationScreen. How to resolve this problem ?