Looking up a deactivated widget's ancestor is unsafe. #189

lvyandev · 2024-05-20T09:39:06Z

版本信息

Flutter版本：[v3.22.0]
flutter_smart_dialog版本：[v4.9.7]

描述bug/需求

暂未发现如何复现，且出现如下异常后无法显示toast

Looking up a deactivated widget's ancestor is unsafe.
At this point the state of the widget's element tree is no longer stable.
To safely refer to a widget's ancestor in its dispose() method, save a reference to the ancestor by calling dependOnInheritedWidgetOfExactType() in the widget's didChangeDependencies() method.
Stack Trace:
#0      Element._debugCheckStateIsActiveForAncestorLookup.<anonymous closure> (package:flutter/src/widgets/framework.dart:4743:9)
#1      Element._debugCheckStateIsActiveForAncestorLookup (package:flutter/src/widgets/framework.dart:4757:6)
#2      Element.visitAncestorElements (package:flutter/src/widgets/framework.dart:4869:12)
#3      LookupBoundary.findAncestorStateOfType (package:flutter/src/widgets/lookup_boundary.dart:166:13)
#4      Overlay.maybeOf (package:flutter/src/widgets/overlay.dart:580:26)
#5      Overlay.of (package:flutter/src/widgets/overlay.dart:530:34)
#6      overlay (package:flutter_smart_dialog/src/kit/view_utils.dart:19:55)
#7      CustomToast.showToast.showToast (package:flutter_smart_dialog/src/custom/toast/custom_toast.dart:46:7)
#8      CustomToast.normalToast (package:flutter_smart_dialog/src/custom/toast/custom_toast.dart:128:25)
#9      CustomToast.showToast (package:flutter_smart_dialog/src/custom/toast/custom_toast.dart:78:13)
#10     DialogProxy.showToast (package:flutter_smart_dialog/src/helper/dialog_proxy.dart:325:18)
<asynchronous suspension>

问题demo

lvyandev · 2024-05-21T01:17:31Z

The specified entry is already present in the target Overlay.
The OverlayEntry was:
  SmartOverlayEntry#d7032(opaque: false; maintainState: false)
The Overlay the OverlayEntry was trying to insert to was:
  OverlayState#e45c5(lifecycle state: defunct, not mounted, entries: [OverlayEntry#a8309(opaque: false; maintainState: false)])
Consider calling remove on the OverlayEntry before inserting it to a different Overlay, or switching to the OverlayPortal API to avoid manual OverlayEntry management.
Stack Trace:
#0      OverlayState._debugCanInsertEntry (package:flutter/src/widgets/overlay.dart:631:7)
#1      OverlayState.insert (package:flutter/src/widgets/overlay.dart:669:12)
#2      CustomToast.showToast.showToast (package:flutter_smart_dialog/src/custom/toast/custom_toast.dart:46:41)
#3      CustomToast.normalToast (package:flutter_smart_dialog/src/custom/toast/custom_toast.dart:128:25)
#4      ToastTool.dispatchNext (package:flutter_smart_dialog/src/custom/toast/toast_tool.dart:80:25)
#5      CustomToast.normalToast.<anonymous closure> (package:flutter_smart_dialog/src/custom/toast/custom_toast.dart:131:26)
<asynchronous suspension>

xdd666t · 2024-05-21T06:52:59Z

试下新版本

dependencies:
  flutter_smart_dialog: ^4.9.7+1

lvyandev · 2024-05-21T07:53:19Z

介系船新版本的报错

I/flutter (25749): Bad state: Future already completed
I/flutter (25749): #0      _AsyncCompleter.complete (dart:async/future_impl.dart:43:31)
I/flutter (25749): #1      DialogProxy.beforeShow (package:flutter_smart_dialog/src/helper/dialog_proxy.dart:371:20)
I/flutter (25749): <asynchronous suspension>
I/flutter (25749): #2      DialogProxy.showLoading (package:flutter_smart_dialog/src/helper/dialog_proxy.dart:296:5)
I/flutter (25749): <asynchronous suspension>
I/flutter (25749): 'package:flutter/src/widgets/overlay.dart': Failed assertion: line 207 pos 12: '_overlay != null': is not true.
I/flutter (25749): #0      _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:51:61)
I/flutter (25749): #1      _AssertionError._throwNew (dart:core-patch/errors_patch.dart:40:5)
I/flutter (25749): #2      OverlayEntry.remove (package:flutter/src/widgets/overlay.dart:207:12)
I/flutter (25749): #3      SmartOverlayEntry.remove (package:flutter_smart_dialog/src/widget/helper/smart_overlay_entry.dart:21:11)
I/flutter (25749): #4      _SmartOverlayState.initState.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:flutter_smart_dialog/src/widget/helper/smart_overlay.dart:52:46)
I/flutter (25749): #5      State.setState (package:flutter/src/widgets/framework.dart:1203:30)
I/flutter (25749): #6      _SmartOverlayState.initState.<anonymous closure>.<anonymous closure> (package:flutter_smart_dialog/src/widget/helper/smart_overlay.dart:42:9)
I/flutter (25749): #7      SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1392:15)
I/flutter (25749): #8      SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1326:11)
I/flutter (25749): #9      SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:117
I/flutter (25749): 'package:flutter/src/widgets/overlay.dart': Failed assertion: line 207 pos 12: '_overlay != null': is not true.
I/flutter (25749): #0      _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:51:61)
I/flutter (25749): #1      _AssertionError._throwNew (dart:core-patch/errors_patch.dart:40:5)
I/flutter (25749): #2      OverlayEntry.remove (package:flutter/src/widgets/overlay.dart:207:12)
I/flutter (25749): #3      SmartOverlayEntry.remove (package:flutter_smart_dialog/src/widget/helper/smart_overlay_entry.dart:21:11)
I/flutter (25749): #4      _SmartOverlayState.initState.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:flutter_smart_dialog/src/widget/helper/smart_overlay.dart:52:46)
I/flutter (25749): #5      State.setState (package:flutter/src/widgets/framework.dart:1203:30)
I/flutter (25749): #6      _SmartOverlayState.initState.<anonymous closure>.<anonymous closure> (package:flutter_smart_dialog/src/widget/helper/smart_overlay.dart:42:9)
I/flutter (25749): #7      SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1392:15)
I/flutter (25749): #8      SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1326:11)
I/flutter (25749): #9      SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:117
I/flutter (25749): Bad state: Future already completed
I/flutter (25749): #0      _AsyncCompleter.complete (dart:async/future_impl.dart:43:31)
I/flutter (25749): #1      DialogProxy.beforeShow (package:flutter_smart_dialog/src/helper/dialog_proxy.dart:371:20)
I/flutter (25749): <asynchronous suspension>
I/flutter (25749): #2      DialogProxy.show (package:flutter_smart_dialog/src/helper/dialog_proxy.dart:130:5)
I/flutter (25749): <asynchronous suspension>
I/flutter (25749): 'package:flutter/src/widgets/overlay.dart': Failed assertion: line 207 pos 12: '_overlay != null': is not true.
I/flutter (25749): #0      _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:51:61)
I/flutter (25749): #1      _AssertionError._throwNew (dart:core-patch/errors_patch.dart:40:5)
I/flutter (25749): #2      OverlayEntry.remove (package:flutter/src/widgets/overlay.dart:207:12)
I/flutter (25749): #3      SmartOverlayEntry.remove (package:flutter_smart_dialog/src/widget/helper/smart_overlay_entry.dart:21:11)
I/flutter (25749): #4      _SmartOverlayState.initState.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:flutter_smart_dialog/src/widget/helper/smart_overlay.dart:52:46)
I/flutter (25749): #5      State.setState (package:flutter/src/widgets/framework.dart:1203:30)
I/flutter (25749): #6      _SmartOverlayState.initState.<anonymous closure>.<anonymous closure> (package:flutter_smart_dialog/src/widget/helper/smart_overlay.dart:42:9)
I/flutter (25749): #7      SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1392:15)
I/flutter (25749): #8      SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1326:11)
I/flutter (25749): #9      SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:117

xdd666t · 2024-05-21T08:24:42Z

试下这个

dependencies:
  flutter_smart_dialog: ^4.9.7+2

lvyandev · 2024-05-21T08:44:12Z

现在future的问题没有了

I/flutter (29519): 'package:flutter/src/widgets/overlay.dart': Failed assertion: line 207 pos 12: '_overlay != null': is not true.
I/flutter (29519): #0      _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:51:61)
I/flutter (29519): #1      _AssertionError._throwNew (dart:core-patch/errors_patch.dart:40:5)
I/flutter (29519): #2      OverlayEntry.remove (package:flutter/src/widgets/overlay.dart:207:12)
I/flutter (29519): #3      SmartOverlayEntry.remove (package:flutter_smart_dialog/src/widget/helper/smart_overlay_entry.dart:21:11)
I/flutter (29519): #4      _SmartOverlayState.initState.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:flutter_smart_dialog/src/widget/helper/smart_overlay.dart:52:46)
I/flutter (29519): #5      State.setState (package:flutter/src/widgets/framework.dart:1203:30)
I/flutter (29519): #6      _SmartOverlayState.initState.<anonymous closure>.<anonymous closure> (package:flutter_smart_dialog/src/widget/helper/smart_overlay.dart:42:9)
I/flutter (29519): #7      SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1392:15)
I/flutter (29519): #8      SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1326:11)
I/flutter (29519): #9      SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:117
I/flutter (29519): 'package:flutter/src/widgets/overlay.dart': Failed assertion: line 207 pos 12: '_overlay != null': is not true.
I/flutter (29519): #0      _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:51:61)
I/flutter (29519): #1      _AssertionError._throwNew (dart:core-patch/errors_patch.dart:40:5)
I/flutter (29519): #2      OverlayEntry.remove (package:flutter/src/widgets/overlay.dart:207:12)
I/flutter (29519): #3      SmartOverlayEntry.remove (package:flutter_smart_dialog/src/widget/helper/smart_overlay_entry.dart:21:11)
I/flutter (29519): #4      _SmartOverlayState.initState.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:flutter_smart_dialog/src/widget/helper/smart_overlay.dart:52:46)
I/flutter (29519): #5      State.setState (package:flutter/src/widgets/framework.dart:1203:30)
I/flutter (29519): #6      _SmartOverlayState.initState.<anonymous closure>.<anonymous closure> (package:flutter_smart_dialog/src/widget/helper/smart_overlay.dart:42:9)
I/flutter (29519): #7      SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1392:15)
I/flutter (29519): #8      SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1326:11)
I/flutter (29519): #9      SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:117

xdd666t · 2024-05-21T08:46:05Z

怎么复现的? 给个demo我试试

lvyandev · 2024-05-21T08:48:32Z

在项目里面测出来的，一时半会感觉剥不出来，要不然我用master先测，测好了再发？

lvyandev · 2024-05-21T09:51:54Z

为啥会出现entry有值，overlay为null的情况呀

lvyandev · 2024-05-22T02:08:14Z

把版本降回4.9.6后没有问题

xdd666t · 2024-05-22T02:13:35Z

4.9.7初始化做了重构, 解决以前难以解决的问题, 你那边在4.9.7发生的问题, 可以新建个项目, 然后给下最简可运行可复现问题的代码, 我这边复现后才好尝试解决

4.9.7的初始化重构是有一定意义的, 在调试场景和相关性能都有相关提升

lvyandev · 2024-05-22T07:07:51Z

现在已经定位到问题，是用的loading dialog出了问题，我把我自定义的loading dialog代码如下

/// 在接口请求前后加上loading
class LoadingInterceptor extends InterceptorsWrapper {
  /// 请求的队列，用于保证当前只有一个loading弹窗在界面上展示
  final List<String> _loadingRequests = <String>[];

  /// 展示弹窗
  Future<void> _showLoading(String tag) async {
    return SmartDialog.showLoading(
      clickMaskDismiss: false,
      backDismiss: false,
      maskColor: Colors.black12,
      builder: (_) => const LoadingDialog(),
    );
  }

  /// 取消弹窗
  Future<void> _dismissLoading([String? tag]) async {
    if (tag != null) {
      // 先移除队列中当前的接口
      _loadingRequests.remove(tag);
    }
    return SmartDialog.dismiss<void>(status: SmartStatus.loading, tag: tag);
  }

  /// 展示loading的处理
  void _handleShow(
    RequestOptions requestOptions,
    Map<String, dynamic> extra,
  ) {
    final bool? shouldLoading = extra[JunnyConstants.requestLoading] as bool?;

    if (shouldLoading ?? true) {
      final String uri = requestOptions.uri.normalizePath().toString();

      _loadingRequests.add(uri);

      // 如果队列中还有正在请求的接口而且当前loading弹窗正在展示
      // 那么在队列中等待展示
      if (SmartDialog.config.checkExist(
        dialogTypes: const <SmartAllDialogType>{SmartAllDialogType.loading},
      )) {
        return;
      }

      _showLoading(uri);
    }
  }

  /// 取消loading的处理
  Future<void> _handleDismiss(
    RequestOptions requestOptions,
    Map<String, dynamic> extra,
  ) async {
    final bool? shouldLoading = extra[JunnyConstants.requestLoading] as bool?;

    final String uri = requestOptions.uri.normalizePath().toString();

    // 取消当前接口弹窗ui展示
    await _dismissLoading(uri);

    // 如果请求队列中还有数据
    if (_loadingRequests.isNotEmpty) {
      if (shouldLoading ?? true) {
        // 继续展示最后一个加入的接口
        _showLoading(_loadingRequests.last);
      }
    } else {
      // 此行是为了解决已经dismiss掉所有loading
      // 且界面上没有loading dialog显示的情况下isExist仍然为true的情况
      await _dismissLoading();
    }
  }

  @override
  Future<void> onRequest(
    RequestOptions options,
    RequestInterceptorHandler handler,
  ) async {
    final Map<String, dynamic> extra = options.extra;

    _handleShow(options, extra);

    handler.next(options);
  }

  @override
  Future<void> onResponse(
    Response<dynamic> response,
    ResponseInterceptorHandler handler,
  ) async {
    handler.next(response);

    final RequestOptions requestOptions = response.requestOptions;
    final Map<String, dynamic> extra = requestOptions.extra;

    _handleDismiss(requestOptions, extra);
  }

  @override
  Future<void> onError(
    DioException err,
    ErrorInterceptorHandler handler,
  ) async {
    handler.next(err);

    final RequestOptions requestOptions = err.requestOptions;
    final Map<String, dynamic> extra = requestOptions.extra;

    _handleDismiss(requestOptions, extra);
  }
}

xdd666t · 2024-05-22T07:13:42Z

没太看懂你的例子, 你的意思是dismiss完loading后, 然后你又dismiss了loading, 就出了问题?

lvyandev · 2024-05-22T07:22:39Z

这个interceptor的作用是

请求开始时：
如果没有其他请求在进行，显示加载提示。

请求完成时：
隐藏加载提示。
检查是否有未完成的请求，如果有，重新显示加载提示。

并发请求管理：
正确管理未完成请求的计数，避免加载提示过早或不关闭的情况。

现在我不清楚这个逻辑哪里出的问题，因为我把这个拦截器取消之后报错就没有了，~~或者我把SmartDialog.showLoading换成SmartDialog.show也不会出现报错，但是SmartDialog.show在多并发请求的时候会出现最后一个loading未关闭的情况。~~都会

有尝试抽取一个demo，但是并不能复现

xdd666t · 2024-05-22T07:51:23Z

..........., 试下新版本

dependencies:
  flutter_smart_dialog: ^4.9.7+3

lvyandev · 2024-05-22T08:28:14Z

还是不行，可能是这个拦截器里面用法有问题，我再试试吧

lakatosdavid · 2024-05-27T07:27:20Z

WidgetsBinding.instance.addPostFrameCallback((_) async { SmartDialog.showLoading(); });

this works for me. there is no error after i did this in my code

xdd666t · 2024-05-27T15:40:21Z

请使用新版本 | Please use the new version @lvyandev @lakatosdavid

dependencies:
  flutter_smart_dialog: ^4.9.7+7

S2V · 2024-06-12T11:27:52Z

Still reproducible using ^4.9.7+7

lvyandev · 2024-06-13T01:54:22Z

@xdd666t master分支fba973b似乎修复了，啥时候发布?

ArturoRen · 2024-08-08T02:14:52Z

我在ios上遇到上面问题，安卓上没有遇到这个问题。

版本4.9.7+8
2.第一个toast弹出时出现问题：
LateInitializationError: Field 'contextCustom' has not been initialized.
3.后续所有弹窗无法弹出，报问题：
To safely refer to a widget's ancestor in its dispose() method, save a reference to the ancestor by calling dependOnInheritedWidgetOfExactType() in the widget's didChangeDependencies() method.

复现：我不知道具体位置，在app启动的第一个Dialog就报了上面问题
安卓和iOS的唯一区别就是：ios有两个模块（即两套：MaterialApp）切换的逻辑，安卓只有一个顶层MaterialApp。

flutter: 弹窗执行 flutter: LateInitializationError: Field 'contextCustom' has not been initialized. flutter: #0 DialogProxy.contextCustom (package:flutter_smart_dialog/src/helper/dialog_proxy.dart) dialog_proxy.dart:1 flutter: #1 DialogProxy.timelyContextCustom dialog_proxy.dart:65 flutter: #2 CustomDialog._pushDialog.<anonymous closure> custom_dialog.dart:266 flutter: #3 ViewUtils.addSafeUse view_utils.dart:10 flutter: #4 CustomDialog._pushDialog custom_dialog.dart:264 flutter: #5 CustomDialog._handleMustOperate custom_dialog.dart:246 flutter: #6 CustomDialog.show custom_dialog.dart:53 flutter: #7 DialogProxy.show dialog_proxy.dart:138 flutter: <asynchronous suspension>
一点帮助：
**

**

ArturoRen · 2024-08-08T02:46:54Z

我在ios上遇到上面问题，安卓上没有遇到这个问题。

版本4.9.7+8
2.第一个toast弹出时出现问题：
LateInitializationError: Field 'contextCustom' has not been initialized.
3.后续所有弹窗无法弹出，报问题：
To safely refer to a widget's ancestor in its dispose() method, save a reference to the ancestor by calling dependOnInheritedWidgetOfExactType() in the widget's didChangeDependencies() method.

复现：我不知道具体位置，在app启动的第一个Dialog就报了上面问题安卓和iOS的唯一区别就是：ios有两个模块（即两套：MaterialApp）切换的逻辑，安卓只有一个顶层MaterialApp。

flutter: 弹窗执行 flutter: LateInitializationError: Field 'contextCustom' has not been initialized. flutter: #0 DialogProxy.contextCustom (package:flutter_smart_dialog/src/helper/dialog_proxy.dart) dialog_proxy.dart:1 flutter: #1 DialogProxy.timelyContextCustom dialog_proxy.dart:65 flutter: #2 CustomDialog._pushDialog.<anonymous closure> custom_dialog.dart:266 flutter: #3 ViewUtils.addSafeUse view_utils.dart:10 flutter: #4 CustomDialog._pushDialog custom_dialog.dart:264 flutter: #5 CustomDialog._handleMustOperate custom_dialog.dart:246 flutter: #6 CustomDialog.show custom_dialog.dart:53 flutter: #7 DialogProxy.show dialog_proxy.dart:138 flutter: <asynchronous suspension> 一点帮助： ** **

已经解决，无法再多个MaterialApp下重复初始化，内部应该是类似单例维护了context吗

xlfdyzcs · 2024-09-13T11:24:05Z

我遇到这个问题的原因是：注册了多次（FlutterSmartDialog.init()），只初始化一次解决了这个问题，希望它对排查有一定帮助

xdd666t added the bug Something isn't working label May 21, 2024

xdd666t self-assigned this May 21, 2024

xdd666t added a commit that referenced this issue May 21, 2024

process #188, #189

4f61b34

xdd666t added a commit that referenced this issue May 21, 2024

process #189

fd5b8b3

xdd666t added a commit that referenced this issue May 22, 2024

process #189

f3a033c

hstk1993 mentioned this issue May 28, 2024

网络请求封装不显示toast #191

Closed

xdd666t closed this as completed Jun 1, 2024

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Looking up a deactivated widget's ancestor is unsafe. #189

Looking up a deactivated widget's ancestor is unsafe. #189

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lvyandev commented May 22, 2024 •

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ArturoRen commented Aug 8, 2024 •

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ArturoRen commented Aug 8, 2024

xlfdyzcs commented Sep 13, 2024

Looking up a deactivated widget's ancestor is unsafe. #189

Looking up a deactivated widget's ancestor is unsafe. #189

Comments

lvyandev commented May 20, 2024

版本信息

描述bug/需求

问题demo

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