How to load data stored in SharedPreference in flutter - flutter

Question

I have a code for getting current logged in username and save it to a shared preference. The issue am facing is that whenever a user logs in for the first time, the username is never displayed, but when I do ahot reload on the app, the username is displayed on the screen . How can I have it in such a way the username is loaded on the first load without doing a hot reload.
How am getting the username on SharedPreference
/// Gets the current and prior accounts.
Future<dynamic> handleGetAccount() async { // <-- Replace dynamic with type of currentAccount
final result = await msal.getAccount();
if (result.currentAccount != null) {
SharedPreferences sharedPreferences = await SharedPreferences.getInstance();
sharedPreferences.setString("username", result.currentAccount.username);
//print(result.currentAccount.username);
return result.currentAccount;
} else {
print('no account found');
return null;
}
}
My navigation to NavScreen ->redirects to Home screen
/// Updates the signed in state
refreshSignedInStatus() async {
bool loggedIn = await msal.getSignedIn();
if (loggedIn) {
isSignedIn = loggedIn;
if(isSignedIn) {
Navigator.of(context).push(
MaterialPageRoute(
builder: (context) => NavScreen(
),
),
);
}
// Remaining code for navigation
}
}
how I am getting the username to show on home screen and show the username
class Home extends StatefulWidget {
const Home({Key key}) : super(key: key);
#override
HomeState createState() => new HomeState();
}
class HomeState extends State<Home> {
final TrackingScrollController _trackingScrollController =
TrackingScrollController();
String username = "";
#override
void initState() {
getName();
}
Future<String> getName() async {
SharedPreferences prefs = await SharedPreferences.getInstance();
username = prefs.getString("username");
return username;
}

Answer 1

Because getName() is a async method, you should call setState((){}) after username got.
void getName() async {
SharedPreferences prefs = await SharedPreferences.getInstance();
username = prefs.getString("username");
setState((){});
}