【发布时间】：2019-11-07 23:30:22
【问题描述】：
我升级了颤振并运行了我的应用程序，但它无法启动并引发无效参数错误。
我尝试从 dev 和 master 频道切换并在终端上运行 Flutter Doctor，但问题仍然存在。
Running "flutter pub get" in feedback... 1.0s
Launching lib\main.dart on Android SDK built for x86 in debug mode...
Initializing gradle...
Resolving dependencies...
Running Gradle task 'assembleDebug'...
Built build\app\outputs\apk\debug\app-debug.apk.
Installing build\app\outputs\apk\app.apk...
Syncing files to device Android SDK built for x86...
I/flutter ( 6956): ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
I/flutter ( 6956): The following ArgumentError was thrown attaching to the render tree:
I/flutter ( 6956): Invalid argument(s)
I/flutter ( 6956): When the exception was thrown, this was the stack:
I/flutter ( 6956): #0 _StringBase.+ (dart:core-patch/string_patch.dart:260:57)
I/flutter ( 6956): #1 new _MainModel&Model&AuthModel&ResponsesModel (package:Feedback/scoped-models/main.dart:10:57)
I/flutter ( 6956): #2 new _MainModel&Model&AuthModel&ResponsesModel&UtilityModel (package:Feedback/scoped-models/main.dart)
I/flutter ( 6956): #3 new _MainModel&Model&AuthModel&ResponsesModel&UtilityModel&InternetModel (package:Feedback/scoped-models/main.dart)
I/flutter ( 6956): #4 new MainModel (package:Feedback/scoped-models/main.dart)
I/flutter ( 6956): #5 new MyAppState (package:Feedback/main.dart:23:27)
I/flutter ( 6956): #6 MyApp.createState (package:Feedback/main.dart:18:12)
I/flutter ( 6956): #7 new StatefulElement (package:flutter/src/widgets/framework.dart:3989:25)
I/flutter ( 6956): #8 StatefulWidget.createElement (package:flutter/src/widgets/framework.dart:802:38)
I/flutter ( 6956): #9 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3082:40)
I/flutter ( 6956): #10 Element.updateChild (package:flutter/src/widgets/framework.dart:2887:12)
I/flutter ( 6956): #11 RenderObjectToWidgetElement._rebuild (package:flutter/src/widgets/binding.dart:939:16)
I/flutter ( 6956): #12 RenderObjectToWidgetElement.mount (package:flutter/src/widgets/binding.dart:910:5)
I/flutter ( 6956): #13 RenderObjectToWidgetAdapter.attachToRenderTree.<anonymous closure> (package:flutter/src/widgets/binding.dart:856:17)
I/flutter ( 6956): #14 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2320:19)
I/flutter ( 6956): #15 RenderObjectToWidgetAdapter.attachToRenderTree (package:flutter/src/widgets/binding.dart:855:13)
I/flutter ( 6956): #16 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding&WidgetsBinding.attachRootWidget (package:flutter/src/widgets/binding.dart:736:7)
I/flutter ( 6956): #17 runApp (package:flutter/src/widgets/binding.dart:786:7)
I/flutter ( 6956): #18 main (package:Feedback/main.dart:12:16)
I/flutter ( 6956): #19 _runMainZoned.<anonymous closure>.<anonymous closure> (dart:ui/hooks.dart:216:25)
I/flutter ( 6956): #24 _runMainZoned.<anonymous closure> (dart:ui/hooks.dart:208:5)
I/flutter ( 6956): #25 _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:301:19)
I/flutter ( 6956): #26 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:172:12)
I/flutter ( 6956): (elided 4 frames from package dart:async)
I/flutter ( 6956): ════════════════════════════════════════════════════════════════════════════════════════════════════
D/EGL_emulation( 6956): eglMakeCurrent: 0xaa442fc0: ver 3 0 (tinfo 0x9fb5e310)
【问题讨论】：
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你运行“flutter clean”了吗？
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执行
flutter clean，再次运行应用程序，如果问题仍然存在，请退出应用程序，然后重新运行。基本可以解决问题。或者它是一些过时的包。 -
@Alok 是的，我确实很干净，但没有。后来我意识到我在我的 http 请求中错误地引入了授权标头，这就是导致问题的原因。感谢所有它现在解决了。
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很高兴听到@Loki，我希望你不要偷太空石 XD
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:D "太空石" @Alok