I am working on an app that have a home page and a settings page so i want to move between them with an icon button in the appbar so i used navigator.push method but the app freezez and dosenot do any thing and when i restart it gives me this error :
══╡ EXCEPTION CAUGHT BY SCHEDULER LIBRARY ╞═════════════════════════════════════════════════════════
The following assertion was thrown during a scheduler callback:
There are multiple heroes that share the same tag within a subtree.
Within each subtree for which heroes are to be animated (i.e. a PageRoute subtree), each Hero must
have a unique non-null tag.
In this case, multiple heroes had the following tag: <default FloatingActionButton tag>
├# Here is the subtree for one of the offending heroes: Hero
When the exception was thrown, this was the stack:
#0 Hero._allHeroesFor.inviteHero.<anonymous closure> (package:flutter/src/widgets/heroes.dart:278:11)
#1 Hero._allHeroesFor.inviteHero (package:flutter/src/widgets/heroes.dart:289:8)
#2 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:307:11)
#3 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6420:14)
#4 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#5 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#6 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#7 MultiChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6532:16)
#8 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#9 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6420:14)
#10 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#11 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#12 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#13 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6420:14)
#14 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#15 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#16 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#17 MultiChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6532:16)
#18 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#19 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#20 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#21 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#22 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#23 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#24 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#25 MultiChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6532:16)
#26 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#27 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#28 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#29 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#30 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#31 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#32 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#33 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#34 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#35 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#36 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#37 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6420:14)
#38 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#39 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#40 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#41 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6420:14)
#42 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#43 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#44 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#45 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#46 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#47 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#48 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#49 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#50 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#51 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#52 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#53 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#54 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#55 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#56 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#57 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#58 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#59 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#60 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#61 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6420:14)
#62 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#63 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:5349:14)
#64 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:322:15)
#65 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6420:14)
#66 Element.visitChildElements (package:flutter/src/widgets/framework.dart:3581:5)
#67 Hero._allHeroesFor (package:flutter/src/widgets/heroes.dart:325:13)
#68 HeroController._startHeroTransition (package:flutter/src/widgets/heroes.dart:932:14)
#69 HeroController._maybeStartHeroTransition.<anonymous closure> (package:flutter/src/widgets/heroes.dart:891:9)
#70 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1297:15)
#71 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1236:9)
#72 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:1085:5)
#73 _invoke (dart:ui/hooks.dart:170:13)
#74 PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:401:5)
#75 _drawFrame (dart:ui/hooks.dart:140:31)
════════════════════════════════════════════════════════════════════════════════════════════════════
Restarted application in 1,972ms.
i have two files of code :
main.dart:
import 'package:flutter/material.dart';
import 'package:flutter_tts/flutter_tts.dart';
import 'settings.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
theme: ThemeData(
useMaterial3: false,
),
debugShowCheckedModeBanner: false,
home: MainSt(),
);
}
}
class MainSt extends StatefulWidget {
const MainSt({Key? key}) : super(key: key);
@override
State<MainSt> createState() => _MainStState();
}
final addController = TextEditingController();
List cardsList = [];
class _MainStState extends State<MainSt> {
var tts_delay = 1;
var tts_word_repeat = 2;
var tts_speach_rate = 0.5;
FlutterTts flutterTts = FlutterTts();
Future<void> textToS(String text) async {
await flutterTts.setLanguage("en-US");
await flutterTts.setVolume(0.5);
await flutterTts.setSpeechRate(tts_speach_rate);
await flutterTts.setPitch(1);
await flutterTts.speak(text);
}
bool isPlaying = false;
Future<void> playAllPhrases() async {
isPlaying = true; // Set the flag to indicate playback is ongoing
List<String> tempCardsList =
List.from(cardsList); // Create a temporary list
for (String phrase in tempCardsList) {
if (!isPlaying) break; // Check the flag and break if needed
for (int word = 0; word < tts_word_repeat; word++) {
if (!isPlaying) break; // Check the flag and break if needed
await textToS(phrase);
await Future.delayed(Duration(seconds: tts_delay));
}
}
}
Future<void> _dialogBuilder(BuildContext context) {
return showDialog<void>(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title: const Text('Add a word or phrase'),
content: TextField(
controller: addController,
decoration: const InputDecoration(
border: UnderlineInputBorder(),
labelText: 'Enter word or phrase',
),
),
actions: <Widget>[
TextButton(
style: TextButton.styleFrom(
textStyle: Theme.of(context).textTheme.labelLarge,
),
child: const Text('Cancel'),
onPressed: () {
Navigator.of(context).pop();
addController.clear();
},
),
TextButton(
style: TextButton.styleFrom(
textStyle: Theme.of(context).textTheme.labelLarge,
),
child: const Text('Done'),
onPressed: () {
print(addController.text);
setState(
() {
if (!(addController.text.trim().isEmpty)) {
cardsList.add(addController.text);
addController.clear();
Navigator.of(context).pop();
} else {
addController.clear();
}
},
);
},
),
],
);
},
);
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Text('Wordly'),
IconButton(
icon: Icon(Icons.settings),
onPressed: () {
setState(() {
Navigator.of(context).push(
MaterialPageRoute(builder: (context) => Settings_page()));
});
},
),
],
),
),
floatingActionButton: Column(
mainAxisAlignment: MainAxisAlignment.end,
children: [
FloatingActionButton(
child: Icon(Icons.add),
onPressed: () {
_dialogBuilder(context);
},
),
SizedBox(
height: 10,
),
FloatingActionButton(
child: Icon(Icons.volume_up_outlined),
onPressed: () {
playAllPhrases();
},
),
SizedBox(
height: 10,
),
FloatingActionButton(
child: Icon(Icons.stop_circle),
onPressed: () {
setState(() {
isPlaying = false;
});
},
),
],
),
body: HomePage(),
);
}
}
class HomePage extends StatefulWidget {
const HomePage({super.key});
@override
State<HomePage> createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> {
@override
Widget build(BuildContext context) {
return ListView.builder(
itemCount: cardsList.length,
itemBuilder: (context, index) {
return Padding(
padding: const EdgeInsets.symmetric(vertical: 2, horizontal: 5),
child: Card(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
ListTile(
trailing: IconButton(
icon: Icon(Icons.delete),
onPressed: () {
setState(() {
//add card delete logic
cardsList.removeAt(index);
});
},
),
title: Row(
children: [
// SizedBox(
// width: 8,
// ),
Text(cardsList[index]),
],
),
),
],
),
),
);
},
);
}
}
and settings.dart :
import 'package:flutter/material.dart';
import 'main.dart';
class Settings_page extends StatefulWidget {
const Settings_page({super.key});
@override
State<Settings_page> createState() => _Settings_pageState();
}
class _Settings_pageState extends State<Settings_page> {
@override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: Text("Hello"),
),
);
}
}
i tride the navigator method :
Navigator.of(context).push(MaterialPageRoute(builder: (context) => Settings_page()));
and i tride the navigator method without setstate but all lead to the same problem .
here is a video of the app :
Google Drive
i hope you finde a fix for it (:
