Strings not accepted as Node ids about graphview HOT 3 CLOSED

════════ Exception caught by widgets library ═══════════════════════════════════
The following _CastError was thrown building GraphView(dirty, state: _GraphViewState#f555c):
type 'String' is not a subtype of type 'int' in type cast

The relevant error-causing widget was
GraphView
lib/common/tree.dart:72
When the exception was thrown, this was the stack
#0      _TreeState.build.<anonymous closure> (package:Test/common/tree.dart:80:41)
#1      _GraphView._extractChildren.<anonymous closure> (package:graphview/GraphView.dart:103:40)
#2      List.forEach (dart:core-patch/growable_array.dart:416:8)
#3      _GraphView._extractChildren (package:graphview/GraphView.dart:102:17)
#4      new _GraphView (package:graphview/GraphView.dart:86:35)
#5      _GraphViewState.build (package:graphview/GraphView.dart:69:14)
#6      StatefulElement.build (package:flutter/src/widgets/framework.dart:5080:27)
#7      ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4968:15)
#8      StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5133:11)
#9      Element.rebuild (package:flutter/src/widgets/framework.dart:4690:5)
#10     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4950:5)
#11     StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:5124:11)
#12     ComponentElement.mount (package:flutter/src/widgets/framework.dart:4944:5)
...     Normal element mounting (73 frames)
#85     Element.inflateWidget (package:flutter/src/widgets/framework.dart:3953:16)
#86     MultiChildRenderObjectElement.inflateWidget (package:flutter/src/widgets/framework.dart:6512:36)
#87     MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:6524:32)
...     Normal element mounting (9 frames)
#96     Element.inflateWidget (package:flutter/src/widgets/framework.dart:3953:16)
#97     MultiChildRenderObjectElement.inflateWidget (package:flutter/src/widgets/framework.dart:6512:36)
#98     MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:6524:32)
...     Normal element mounting (28 frames)
#126    Element.inflateWidget (package:flutter/src/widgets/framework.dart:3953:16)
#127    MultiChildRenderObjectElement.inflateWidget (package:flutter/src/widgets/framework.dart:6512:36)
#128    MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:6524:32)
...     Normal element mounting (326 frames)
#454    Element.inflateWidget (package:flutter/src/widgets/framework.dart:3953:16)
#455    MultiChildRenderObjectElement.inflateWidget (package:flutter/src/widgets/framework.dart:6512:36)
#456    MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:6524:32)
...     Normal element mounting (446 frames)
#902    Element.inflateWidget (package:flutter/src/widgets/framework.dart:3953:16)
#903    Element.updateChild (package:flutter/src/widgets/framework.dart:3682:18)
#904    RenderObjectToWidgetElement._rebuild (package:flutter/src/widgets/binding.dart:1176:16)
#905    RenderObjectToWidgetElement.mount (package:flutter/src/widgets/binding.dart:1145:5)
#906    RenderObjectToWidgetAdapter.attachToRenderTree.<anonymous closure> (package:flutter/src/widgets/binding.dart:1092:18)
#907    BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2682:19)
#908    RenderObjectToWidgetAdapter.attachToRenderTree (package:flutter/src/widgets/binding.dart:1091:13)
#909    WidgetsBinding.attachRootWidget (package:flutter/src/widgets/binding.dart:926:7)
#910    WidgetsBinding.scheduleAttachRootWidget.<anonymous closure> (package:flutter/src/widgets/binding.dart:906:7)
#914    _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:192:26)
(elided 3 frames from class _Timer and dart:async-patch)
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D/EGL_emulation( 8303): app_time_stats: avg=5484.56ms min=5484.56ms max=5484.56ms count=1