stop closing showDialogue itself after 15 seconds - flutter

Question

I am trying to display an information dialog when starting an application. After closing, another window appears asking for permission. I call it all in the initState function. It works, but I noticed that this first info dialog also closes on its own when 15 seconds have elapsed. How do I fix this? So that while the dialog is not closed by the user, the application will not be loaded further?
class _MyAppState extends State<MyApp> {
final keyIsFirstLoaded = 'is_first_loaded';
#override
void initState() {
super.initState();
WidgetsBinding.instance.addPostFrameCallback((_) async {
final context = MyApp.navKey.currentState.overlay.context;
await showDialogIfFirstLoaded(context);
await initPlatformState();
});
}
showDialogIfFirstLoaded(BuildContext context, prefs) async {
SharedPreferences prefs = await SharedPreferences.getInstance();
bool isFirstLoaded = prefs.getBool(keyIsFirstLoaded);
if (isFirstLoaded == null) {
return showDialog(
context: context,
builder: (BuildContext context) {
// return object of type Dialog
return new AlertDialog(
// title: new Text("title"),
content: new Text("//"),
actions: <Widget>[
new FlatButton(
child: new Text(".."),
onPressed: () {
Navigator.of(context).pop();
prefs.setBool(keyIsFirstLoaded, false);
},
),
],
);
},
);
}
}
initPlatformState() async {
print('Initializing...');
await BackgroundLocator.initialize();
print('Initialization done');
final _isRunning = await BackgroundLocator.isRegisterLocationUpdate();
setState(() {
isRunning = _isRunning;
});
onStart();
print('Running ${isRunning.toString()}');
}
#override
Widget build(BuildContext context) {
return MaterialApp(
localizationsDelegates: [
// ... app-specific localization delegate[s] here
GlobalMaterialLocalizations.delegate,
GlobalWidgetsLocalizations.delegate,
GlobalCupertinoLocalizations.delegate,
],
navigatorKey:MyApp.navKey,
navigatorObservers: [
FirebaseAnalyticsObserver(analytics: analytics),
],
debugShowCheckedModeBanner: false,
title: '',
theme: ThemeData(),
home: new SplashScreen(),}
class SplashScreen extends StatefulWidget {
#override
_SplashScreenState createState() => new _SplashScreenState();
}
class _SplashScreenState extends State<SplashScreen> with SingleTickerProviderStateMixin {
Timer _timer;
bool _visible = true;
startTime() async {
_timer = Timer(new Duration(seconds: 5), navigationPage);
}
void navigationPage() {
Navigator.of(context).pushReplacementNamed('/home');
}
#override
void initState() {
_timer = Timer(Duration(seconds: 4),
() => setState(
() {
_visible = !_visible;
},
),
);
startTime();
super.initState();
}
#override
void dispose() {
_timer.cancel();
super.dispose();
}
#override
Widget build(BuildContext context) {
return new Stack(
children: <Widget>[
Container(
width: double.infinity,
child: Image.asset('images/bg.jpg',
fit: BoxFit.cover,
height: 1200,
),
),
Container(
width: double.infinity,
height: 1200,
color: Color.fromRGBO(0, 0, 0, 0.8),
),
Container(
alignment: Alignment.center,
child: Row(
children: <Widget>[
Expanded(
flex: 2,
child: Container(
child: Text(''),
),
),
],
),
),
],
);
}
}

Answer 1

This code displays an Alert dialogue if the user is new and after the button click, it will direct him to another dialogue.
I have tested the code and it doesn't close after 15 seconds. I'm still not sure what you're trying to accomplish but I hope this helps.
Init State
#override
void initState() {
WidgetsBinding.instance.addPostFrameCallback((_) async {
await dialog1(context);
//await initPlatformState();
});
super.initState();
}
Alert Dialog 1
dialog1(BuildContext context)async{
SharedPreferences prefs = await SharedPreferences.getInstance();
bool isFirstLoaded = prefs.getBool("keyIsFirstLoaded")??true;
if (isFirstLoaded) {
showDialog(
barrierDismissible: false, //disables user from dismissing the dialog by clicking out of the dialog
context: context, builder: (ctx) {
return AlertDialog(
title: Text("dialog 1"), content: Text("Content"), actions: [
TextButton(
child: new Text(".."),
onPressed: () async{
Navigator.pop(ctx);
await dialog2(context);
prefs.setBool("keyIsFirstLoaded", false);
},
),],);
},);
}else{
//not first time
}
}
Alert Dialog 2
void dialog2(BuildContext context)async{
print("dialog 2");
showDialog(context: context, builder: (context) {
return AlertDialog(title: Text("Dialog 2"),content: Text("permissions"),actions: [
TextButton(
child: new Text("close"),
onPressed: () async{
Navigator.pop(context);
//await dialog1(context); //uncomment if you want to go back to dialoge 1
},
),],);
},);
}

Answer 2

You can return a value from Navigator in the first dialog
Navigator.of(context).pop(true);
prefs.setBool(keyIsFirstLoaded, false);
Once it receive true, then only call the second method.
var value = await showDialogIfFirstLoaded(context);
if(value == true) {
await initPlatformState();
}