Flutter - 失败的断言：第 61 行 pos 12：'_route == ModalRoute.of(context)'：不是真的
[英]Flutter - Failed assertion: line 61 pos 12: '_route == ModalRoute.of(context)': is not true
问题描述
On the click of a button in my app a popup opens.
在我的应用程序中单击一个按钮会打开一个弹出窗口。 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.单击该按钮一次，然后它工作正常，但是每当我连续单击该按钮 2 3 次时，就会出现下面给出的错误。
I am getting this error.我收到此错误。
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这是我的代码
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?我该如何解决这个错误？
4 个解决方案
解决方案1
4 2020-11-11 09:46:32
On the click of a button in my app a popup opens.在我的应用程序中单击一个按钮会打开一个弹出窗口。 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.单击该按钮一次，然后它工作正常，但是每当我连续单击该按钮 2 3 次时，就会出现下面给出的错误。
I am getting this error.我收到此错误。
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这是我的代码
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?我该如何解决这个错误？
解决方案2
1 2021-05-31 21:51:48
On the click of a button in my app a popup opens.在我的应用程序中单击一个按钮会打开一个弹出窗口。 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.单击该按钮一次，然后它工作正常，但是每当我连续单击该按钮 2 3 次时，就会出现下面给出的错误。
I am getting this error.我收到此错误。
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这是我的代码
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?我该如何解决这个错误？
解决方案3
0 已采纳 2021-01-13 10:02:48
On the click of a button in my app a popup opens.在我的应用程序中单击一个按钮会打开一个弹出窗口。 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.单击该按钮一次，然后它工作正常，但是每当我连续单击该按钮 2 3 次时，就会出现下面给出的错误。
I am getting this error.我收到此错误。
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这是我的代码
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?我该如何解决这个错误？
解决方案4
0 2021-08-15 21:47:22
This happens due to the lifecycle of a widget in Flutter.这是由于 Flutter 中小部件的生命周期造成的。 When the initState is called the framework is busy rendering the widget to the widgets tree.当调用 initState 时，框架正忙于将小部件渲染到小部件树。 To clarify, you can not move to another widget or poping-up dialogs while the current one has not rendered yet.澄清一下，当当前小部件或弹出对话框尚未呈现时，您不能移动到另一个小部件或弹出对话框。
All you want to do is to wait until the current activity has been fully built, then do your job, and while we can not know the activity is fully built or not we need to do explicitly commend to wait for a while.您要做的就是等到当前活动完全构建完毕，然后再做您的工作，虽然我们无法知道活动是否完全构建，但我们需要明确推荐等待一段时间。
write this code before the pop-up statments在弹出语句之前编写此代码
await Future.delayed(Duration(seconds: 1));
Wish it worked for all.希望它对所有人有用。
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