我是Flutter的新手，
在创建第二个应用程序后立即：
flutter create myapp && cd myapp && flutter run
我遇到了这个例外。尽管带有简单计数器的应用程序可以在模拟器中运行，但这种异常看起来并不健康，对吧？
Using hardware rendering with device Android SDK built for x86. If you get graphics artifacts, consider enabling software rendering with "--enable-software-rendering".
Launching lib/main.dart on Android SDK built for x86 in debug mode...
I/flutter ( 6000): ══╡ EXCEPTION CAUGHT BY SCHEDULER LIBRARY ╞═════════════════════════════════════════════════════════
I/flutter ( 6000): The following assertion was thrown during a scheduler callback:
I/flutter ( 6000): There are multiple heroes that share the same tag within a subtree.
I/flutter ( 6000): Within each subtree for which heroes are to be animated (i.e. a PageRoute subtree), each Hero must
I/flutter ( 6000): have a unique non-null tag.
I/flutter ( 6000): In this case, multiple heroes had the following tag: <default FloatingActionButton tag>
...
(package:flutter/src/scheduler/binding.dart:1102:15)
I/flutter ( 6000): #141 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1049:9)
I/flutter ( 6000): #142 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:957:5)
I/flutter ( 6000): #146 _invoke (dart:ui/hooks.dart:259:10)
I/flutter ( 6000): #147 _drawFrame (dart:ui/hooks.dart:217:3)
I/flutter ( 6000): (elided 3 frames from package dart:async)
I/flutter ( 6000): ════════════════════════════════════════════════════════════════════════════════════════════════════
I/flutter ( 6000): ══╡ EXCEPTION CAUGHT BY IMAGE RESOURCE SERVICE ╞════════════════════════════════════════════════════
I/flutter ( 6000): The following NetworkImageLoadException was thrown resolving an image codec:
I/flutter ( 6000): HTTP request failed, statusCode: 403,
I/flutter ( 6000): https://cdn.pixabay.com/photo/2016/04/10/21/34/woman-1320810_960_720.jpg
I/flutter ( 6000):
I/flutter ( 6000): When the exception was thrown, this was the stack:
I/flutter ( 6000): #0 NetworkImage._loadAsync (package:flutter/src/painting/_network_image_io.dart:90:9)
I/flutter ( 6000): <asynchronous suspension>
I/flutter ( 6000): #1 NetworkImage.load (package:flutter/src/painting/_network_image_io.dart:47:14)
I/flutter ( 6000): #2 ImageProvider.resolve.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:flutter/src/painting/image_provider.dart:327:17)
I/flutter ( 6000): #3 ImageCache.putIfAbsent (package:flutter/src/painting/image_cache.dart:160:22)
...
(package:flutter/src/rendering/object.dart:1724:7)
I/flutter ( 6000): #213 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:13)
I/flutter ( 6000): #214 RenderObject.layout (package:flutter/src/rendering/object.dart:1724:7)
I/flutter ( 6000): #215 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:13)
I/flutter ( 6000): #216 RenderObject.layout (package:flutter/src/rendering/object.dart:1724:7)
I/flutter ( 6000): #217 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:13)
I/flutter ( 6000): #218 RenderObject.layout (package:flutter/src/rendering/object.dart:1724:7)
I/flutter ( 6000): #219 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:13)
I/flutter ( 6000): #220 RenderObject.layout (package:flutter/src/rendering/object.dart:1724:7)
I/flutter ( 6000): #221 MultiChildLayoutDelegate.layoutChild (package:flutter/src/rendering/custom_layout.dart:163:11)
I/flutter ( 6000): #222 _ScaffoldLayout.performLayout (package:flutter/src/material/scaffold.dart:477:7)
I/flutter ( 6000): #223 MultiChildLayoutDelegate._callPerformLayout (package:flutter/src/rendering/custom_layout.dart:232:7)
I/flutter ( 6000): #224 RenderCustomMultiChildLayoutBox.performLayout (package:flutter/src/rendering/custom_layout.dart:391:14)
I/flutter ( 6000): #225 RenderObject._layoutWithoutResize (package:flutter/src/rendering/object.dart:1584:7)
I/flutter ( 6000): #226 PipelineOwner.flushLayout (package:flutter/src/rendering/object.dart:844:18)
I/flutter ( 6000): #227 RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:344:19)
I/flutter ( 6000): #228 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:774:13)
I/flutter ( 6000): #229 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:283:5)
I/flutter ( 6000): #230 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1102:15)
I/flutter ( 6000): #231 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1041:9)
I/flutter ( 6000): #232 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:957:5)
I/flutter ( 6000): #236 _invoke (dart:ui/hooks.dart:259:10)
I/flutter ( 6000): #237 _drawFrame (dart:ui/hooks.dart:217:3)
I/flutter ( 6000): (elided 6 frames from package dart:async)
I/flutter ( 6000):
I/flutter ( 6000): Image provider:
I/flutter ( 6000): NetworkImage("https://cdn.pixabay.com/photo/2016/04/10/21/34/woman-1320810_960_720.jpg", scale:
I/flutter ( 6000): 1.0)
I/flutter ( 6000): Image key: NetworkImage("https://cdn.pixabay.com/photo/2016/04/10/21/34/woman-1320810_960_720.jpg",
I/flutter ( 6000): scale: 1.0)
I/flutter ( 6000): ════════════════════════════════════════════════════════════════════════════════════════════════════
I/flutter ( 6000): Another exception was thrown: There are multiple heroes that share the same tag within a subtree.
Running Gradle task 'assembleDebug'...
Running Gradle task 'assembleDebug'... Done 26.5s
✓ Built build/app/outputs/apk/debug/app-debug.apk.
Installing build/app/outputs/apk/app.apk... 8.8s
Syncing files to device Android SDK built for x86...
10,951ms (!)
你知道为什么吗？谢谢！
答案 0 :(得分：1)
入门Flutter应用程序不包含加载网络映像之类的内容，因为它只是一个简单的计数器应用程序。正如Vijaya所说，这可能只是另一个项目中的旧错误。当我使用flutter run时，会得到相同的东西。除非您编辑flutter create模板，否则您不必担心。