Flutter - Failed assertion: line 61 pos 12: '_route == ModalRoute.of(context)': is not true
4,600
Solution 1
Returns a Future that resolves to the value that was passed to Navigator.pop when the dialog was closed.
class KeeperManageScreenState extends StatelessWidget {
Future<AlertDialog> _onLogOutPressed(BuildContext context) {
return showDialog<AlertDialog>(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title: Text("Log out?"),
content: Text("Are you sure you want to log out?"),
actions: <Widget>[
FlatButton(
child: const Text('CANCEL'),
onPressed: () {
},
),
FlatButton(
child: const Text('Done'),
onPressed: () {
},
)
],
);
},
);
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("Test Popup",
textAlign: TextAlign.center),
actions: <Widget>[
GestureDetector(
onTap: () {
_onLogOutPressed(context);
},
child: Icon(
Icons.expand_less,
size: 26.0,
),
),
],
),
body: Container(),
);
}
}
Solution 2
Remove the final
GlobalKey<FormState> addFormKey = GlobalKey<FormState>();
Solution 3
changing the key from static final to just final and adding debugLabel solved it for me
class _SomeState extends State {
final GlobalKey _formKey = GlobalKey(debugLabel: '_SomeState'); ....
Just use final resolve this problem
Use This--v
final GlobalKey _formKey = GlobalKey();
Author by
Paresh Mangukiya
I am a Mobile App Developer and Team Leader at BlueBit Technologies, in this My core competency lies in the complete end-to-end management and completing the entire project (iOS, Android and Backend side). I am seeking opportunities to build Mobile Apps from the ground up for you or your business. Please feel free to contact me here ⬇ Skype: pkmangukiya_1 Mobile or WhatsApp: +91 9723680658 Email: [email protected] I have spent 4+ years in the IT industry, I have developed a wide range of (iOS and Android) Applications using iOS (Swift, Objective-C), Flutter(Dart) and Android (Kotlin, Java). I work with B2B clients - Software companies and as well as B2C - Small and Medium Enterprises (SME) in many vertical industries and I passionate about good service & deliver a high-quality product. I have experience in mobile Application Development, App principles, processes, theories and concepts. I am involved in the full life cycle of designing, developing, testing, Analysis, and maintaining applications. And I have also enough knowledge and experience of how to use and where to use Encryption, Exception Handling, Token-based Authentication and other security features in applications. My core competency lies in complete end-to-end management of new Mobile Applications and I am seeking opportunities to build Mobile Apps from the ground up for you or your business. My experience has been awesome and good so far, I have learned a lot of new things and worked during this time. My years of experience have prepared me well for this position. Skills: Programming Languages: iOS: Swift and Objective C Flutter: Dart Android: Java and Kotlin C/C++ Professional Experience: Socket Programming DB & API Design Google API, Facebook API, Google Maps and Direction, Location Services Integrating ads ( Google Ads, Admob, Facebook Ads), Media Player Functionalities API security with JWT JSON, XML In-app purchase User Authentication Chat and Messaging Hosting (App Store, Play Store) Payment Gateways Social Media Integration SQLite Database, Firebase Database, MySQL Database Advanced Analytics Mobile Application Design Document Conversion Projects Variations: Chatting and Messaging: Text and Voice messaging, video communication, photo & video sharing Loan Management System Online Music Streaming QR & Barcode Scanner Parking Facility Social Media: Professional networks, social networks and Data Sharing Lifestyle: Religion, travel, blogs, fashion, health, fitness Music + Audio Video Mixer with dynamic features Football Training Club and Academy Photo and Video Editor App Organization Management Society management Quiz - Play & Win I really enjoy programming a lot!
Updated on December 25, 2022Comments
-
Paresh Mangukiya over 1 year
On the click of a button in my app a popup opens. clicks on the button once, then it works fine, but whenever I click on that button continuously 2 3 times then I get the error given below.
I am getting this error.
flutter: ════════════════════════════════════════════════════════════════════════════════════════════════════ flutter: ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════ flutter: The following assertion was thrown while finalizing the widget tree: flutter: Duplicate GlobalKey detected in widget tree. flutter: The following GlobalKey was specified multiple times in the widget tree. This will lead to parts of flutter: the widget tree being truncated unexpectedly, because the second time a key is seen, the previous flutter: instance is moved to the new location. The key was: flutter: - [LabeledGlobalKey<FormState>#5f491] flutter: This was determined by noticing that after the widget with the above global key was moved out of its flutter: previous parent, that previous parent never updated during this frame, meaning that it either did flutter: not update at all or updated before the widget was moved, in either case implying that it still flutter: thinks that it should have a child with that global key. flutter: The specific parent that did not update after having one or more children forcibly removed due to flutter: GlobalKey reparenting is: flutter: - Column(direction: vertical, mainAxisAlignment: start, crossAxisAlignment: center, renderObject: flutter: RenderFlex#d62e9 relayoutBoundary=up21) flutter: A GlobalKey can only be specified on one widget at a time in the widget tree. flutter: flutter: When the exception was thrown, this was the stack: flutter: #0 BuildOwner.finalizeTree.<anonymous closure> (package:flutter/src/widgets/framework.dart:2881:15) flutter: #1 BuildOwner.finalizeTree (package:flutter/src/widgets/framework.dart:2906:8) flutter: #2 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:915:18) flutter: #3 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:302:5) flutter: #4 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1117:15) flutter: #5 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1055:9) flutter: #6 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:971:5) flutter: #10 _invoke (dart:ui/hooks.dart:251:10) flutter: #11 _drawFrame (dart:ui/hooks.dart:209:3) flutter: (elided 3 frames from dart:async) flutter: ════════════════════════════════════════════════════════════════════════════════════════════════════ ════════ Exception caught by widgets library ═══════════════════════════════════════════════════════ 'package:flutter/src/widgets/will_pop_scope.dart': Failed assertion: line 61 pos 12: '_route == ModalRoute.of(context)': is not true. The relevant error-causing widget was: Form-[LabeledGlobalKey<FormState>#5f491] file:///Users/pkimac/Documents/Project/GateInn/lib/screens/GateKeeperManageScreen.dart:78:18 ════════════════════════════════════════════════════════════════════════════════════════════════════ [VERBOSE-2:ui_dart_state.cc(177)] Unhandled Exception: Failed assertion: boolean expression must not be null #0 _GateKeeperManageScreenState.showAlertView.<anonymous closure> (package:gateinn/screens/GateKeeperManageScreen.dart:150:11) #1 _rootRunUnary (dart:async/zone.dart:1198:47) #2 _CustomZone.runUnary (dart:async/zone.dart:1100:19) #3 _FutureListener.handleValue (dart:async/future_impl.dart:143:18) #4 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:696:45) #5 Future._propagateToListeners (dart:async/future_impl.dart:725:32) #6 Future._completeWithValue (dart:async/future_impl.dart:529:5) #7 _AsyncAwaitCompleter.complete (dart:async-patch/async_patch.dart:40:15) #8 _completeOnAsyncReturn (dart:async-patch/async_patch.dart:311:13) #9 Alert.show (package:gateinn/library/alert_view/alert.dart) <asynchronous suspension> #10 _GateKeeperManageScreenState.showAlertView (package:gateinn/screens/GateKeeperManageScreen.dart<…> ════════ Exception caught by widgets library ═══════════════════════════════════════════════════════ Duplicate GlobalKey detected in widget tree. ════════════════════════════════════════════════════════════════════════════════════════════════════ flutter: ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════ flutter: The following assertion was thrown building flutter: Overlay-[LabeledGlobalKey<OverlayState>#abe0f](dependencies: [_EffectiveTickerMode], state: flutter: OverlayState#3c1ef(entries: [OverlayEntry#00489(opaque: true; maintainState: false), flutter: OverlayEntry#fabc5(opaque: false; maintainState: true), OverlayEntry#8e6f6(opaque: true; flutter: maintainState: false), OverlayEntry#9029f(opaque: false; maintainState: true)])): flutter: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 5098 pos 14: flutter: '_dependents.isEmpty': is not true. ════════ Exception caught by widgets library ═══════════════════════════════════════════════════════ 'package:flutter/src/widgets/framework.dart': Failed assertion: line 5098 pos 14: '_dependents.isEmpty': is not true. The relevant error-causing widget was: FlutterEasyLoading file:///Users/pkimac/Documents/Project/GateInn/lib/main.dart:253:16 ════════════════════════════════════════════════════════════════════════════════════════════════════ flutter: #31 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #32 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #33 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #34 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #35 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #36 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #37 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #38 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #39 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #40 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #41 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #42 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #43 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #44 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #45 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #46 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #47 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #48 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #49 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #50 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #51 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #52 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #53 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #54 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #55 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #56 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #57 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #58 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #59 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #60 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #61 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #62 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #63 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #64 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #65 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #66 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #67 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #68 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #69 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #70 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #71 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #72 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #73 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #74 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #75 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #76 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #77 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #78 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #79 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #80 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #81 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #82 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #83 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #84 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #85 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #86 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #87 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #88 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #89 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #90 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #91 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #92 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #93 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #94 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #95 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #96 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #97 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #98 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #99 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #100 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #101 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #102 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #103 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #104 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #105 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #106 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #107 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #108 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #109 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #110 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #111 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #112 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:6105:14) flutter: #113 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #114 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #115 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #116 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #117 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #118 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:4681:14) flutter: #119 _InactiveElements._deactivateRecursively (package:flutter/src/widgets/framework.dart:2018:13) flutter: #120 _InactiveElements.add (package:flutter/src/widgets/framework.dart:2030:7) flutter: #121 Element.deactivateChild (package:flutter/src/widgets/framework.dart:3605:29) flutter: #122 RenderObjectElement.updateChildren (package:flutter/src/widgets/framework.dart:5740:11) flutter: #123 MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6246:17) flutter: #124 Element.updateChild (package:flutter/src/widgets/framework.dart:3314:15) flutter: #125 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4652:16) flutter: #126 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4800:11) flutter: #127 Element.rebuild (package:flutter/src/widgets/framework.dart:4343:5) flutter: #128 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2730:33) flutter: #129 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:913:20) flutter: #130 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:302:5) flutter: #131 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1117:15) flutter: #132 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1055:9) flutter: #133 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:971:5) flutter: #137 _invoke (dart:ui/hooks.dart:251:10) flutter: #138 _drawFrame (dart:ui/hooks.dart:209:3) flutter: (elided 5 frames from class _AssertionError and dart:async) flutter: flutter: ════════════════════════════════════════════════════════════════════════════════════════════════════ [VERBOSE-2:profiler_metrics_ios.mm(184)] Error retrieving thread information: (ipc/send) invalid destination port [VERBOSE-2:profiler_metrics_ios.mm(184)] Error retrieving thread information: (ipc/send) invalid destination port
This is my Code
class _KeeperManageScreenState extends State<KeeperManageScreen> { final addFormKey = GlobalKey<FormState>(); TextEditingController userIdController = TextEditingController(); TextEditingController passwordController = TextEditingController(); TextEditingController reEnterPasswordController = TextEditingController(); showAlertView(BuildContext context) { var alertStyle = AlertStyle( animationType: AnimationType.grow, overlayColor: Colors.black87, isCloseButton: true, isOverlayTapDismiss: true, descStyle: TextStyle(fontWeight: FontWeight.bold), titleStyle: TextStyle(fontWeight: FontWeight.w500, fontSize: 18), animationDuration: Duration(milliseconds: 400), ); Alert( context: myGlobals.scaffoldKey.currentContext, style: alertStyle, title: getTranslated(context, "Test"), content: Form( key: addFormKey, child: Column( children: <Widget>[ TextFormField( controller: userIdController, decoration: InputDecoration( icon: Icon(Icons.account_circle), labelText: getTranslated(context, "Login Id"), ), ), TextFormField( controller: passwordController, decoration: InputDecoration( icon: Icon(Icons.lock), labelText: getTranslated(context, "Password"), // hintText: getTranslated(context, "Password") ), , ), TextFormField( controller: reEnterPasswordController, decoration: InputDecoration( icon: Icon(Icons.lock), labelText: getTranslated(context, "Confirm Password"), ), ) ], ), ), buttons: [ DialogButton( color: appThemeColor, onPressed: () { onAddBtnPressed(); }, child: Text( "Add", style: TextStyle(color: Colors.white, fontSize: 20), ), ) ]).show(); } @override Widget build(BuildContext context) { return Scaffold( key: myGlobals.scaffoldKey, appBar: AppBar( title: Text(getTranslated(context, "manage_keeper"), textAlign: TextAlign.center), actions: <Widget>[ GestureDetector( onTap: () { showAlertView(context); }, child: Icon( Icons.add_circle_outline, size: 26.0, ), ), ], , ), body: Container(), ); } }How can I resolve this error?