Flutter change bool (with setState) in other dart file - flutter

Question

I'm trying to make a splash screen with stacks. When everything is done loading, i want to change the bool splashScreenIsLoading to false.
This is my code in my main.dart
bool splashScreenIsLoading = true;
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
home: Stack(
children: <Widget>[
loginScreen(),
showRightSplash(),
],
),
);
}
}
class showRightSplash extends StatefulWidget {
#override
_showRightSplashState createState() => _showRightSplashState();
}
class _showRightSplashState extends State<showRightSplash> {
#override
Widget build(BuildContext context) {
return splashScreenIsLoading == true ? splashScreen() : splashScreen2();
}
}
splashScreen() {
return Text(
"SHOW SPLASH SCREEN",
style: TextStyle(fontSize: 50, color: Colors.red),
);
}
splashScreen2() {
return Text(
"HIDE SPLASH SCREEN",
style: TextStyle(fontSize: 50, color: Colors.red),
);
}
In my file (a different .dart file) loginScreen(), I have this in initState
void initState() {
super.initState();
pageController = PageController(initialPage: 0);
doTasks()
setState(() {
splashScreenIsLoading = false;
});
}
It doesn't work, only when I hot reload when everything is loaded. Is there a solution for this?

Answer 1

Since your doTasks() is asynchronous function, edit your initState like this:
void initState() {
super.initState();
pageController = PageController(initialPage: 0);
doTasks().then((_){
setState(() {
splashScreenIsLoading = false;
});
});
}
Also you can simplify your code like this:
splashScreenIsLoading ? splashScreen() : splashScreen2()