我有一个运行没有问题的项目，因为我更新到 Android Studio 3.5.3和 Flutter 1.13.1-pre.99 • channel master ，尝试在真实设备上运行时，同一个项目会出现巨大的错误。
我在这里提到 Android Studio 和 Flutter 更新，因为我不确定它们中的哪一个(如果有)导致了问题。
在我看来，这是 flutter_web 的问题。我前段时间安装的……但我仍然不确定如何卸载 flutter_web 本身。
注意:当前项目不是 flutter web 项目
这里是完整的错误......(对不起，大文本):
Invalid depfile: /Users/user458395/Desktop/flutterProjects/testProjectX/.dart_tool/flutter_build/0732b8ad26463ce096dc3cab1564707e/kernel_snapshot.d
Invalid depfile: /Users/user458395/Desktop/flutterProjects/testProjectX/.dart_tool/flutter_build/0732b8ad26463ce096dc3cab1564707e/kernel_snapshot.d
Compiler message:
lib/routes/search_results_route.dart:1:8: Error: Not found: 'dart:html'
import 'dart:html';
^
../../../Downloads/flutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.0+2/lib/src/browser_client.dart:6:8: Error: Not found: 'dart:html'
import 'dart:html';
^
../../../Downloads/flutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.0+2/lib/src/browser_client.dart:97:25: Error: Type 'HttpRequest' not found.
void _openHttpRequest(HttpRequest request, String method, String url,
^^^^^^^^^^^
../../../Downloads/flutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.0+2/lib/src/browser_client.dart:32:25: Error: 'HttpRequest' isn't a type.
final _xhrs = new Set<HttpRequest>();
^^^^^^^^^^^
../../../Downloads/flutterSdk/flutter/packages/flutter/lib/src/painting/_network_image_web.dart:64:12: Error: Method not found: 'webOnlyInstantiateImageCodecFromUrl'.
return ui.webOnlyInstantiateImageCodecFromUrl(resolved) as Future<ui.Codec>; // ignore: undefined_function
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../../../Downloads/flutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.0+2/lib/src/browser_client.dart:46:19: Error: Method not found: 'HttpRequest'.
var xhr = new HttpRequest();
^^^^^^^^^^^
../../../Downloads/flutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.0+2/lib/src/browser_client.dart:57:45: Error: Method not found: 'Blob'.
var blob = xhr.response == null ? new Blob([]) : xhr.response;
^^^^
../../../Downloads/flutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.0+2/lib/src/browser_client.dart:58:24: Error: Method not found: 'FileReader'.
var reader = new FileReader();
^^^^^^^^^^
../../../Downloads/flutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.0+2/lib/src/browser_client.dart:97:25: Error: 'HttpRequest' isn't a type.
void _openHttpRequest(HttpRequest request, String method, String url,
^^^^^^^^^^^
Unhandled exception:
FileSystemException(uri=org-dartlang-untranslatable-uri:dart%3Ahtml; message=StandardFileSystem only supports file:* and data:* URIs)
#0 StandardFileSystem.entityForUri (package:front_end/src/api_prototype/standard_file_system.dart:33:7)
#1 asFileUri (package:vm/kernel_front_end.dart:604:37)
#2 writeDepfile (package:vm/kernel_front_end.dart:799:21)
<asynchronous suspension>
#3 FrontendCompiler.compile (package:frontend_server/frontend_server.dart:472:15)
<asynchronous suspension>
#4 _FlutterFrontendCompiler.compile (package:flutter_frontend_server/server.dart:38:22)
#5 starter (package:flutter_frontend_server/server.dart:149:27)
#6 main (file:///b/s/w/ir/cache/builder/src/flutter/flutter_frontend_server/bin/starter.dart:8:30)
#7 _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:305:32)
#8 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:174:12)
Target kernel_snapshot failed: Exception: Errors during snapshot creation: null
build failed.
FAILURE: Build failed with an exception.
* Where:
Script '/Users/user458395/Downloads/flutterSdk/flutter/packages/flutter_tools/gradle/flutter.gradle' line: 792
* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command '/Users/user458395/Downloads/flutterSdk/flutter/bin/flutter'' finished with non-zero exit value 1
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 36s
Finished with error: Gradle task assembleDebug failed with exit code 1
最佳答案
编辑 :要摆脱此问题，请通过在终端中运行此命令切换回稳定 channel 。
flutter channel stable
flutter upgrade在这之后。请通过此命令检查详细错误
flutter run --debug
dart:html . dart:html library is for web apps only (it wraps the DOM APIs) and it is not supposed run in Flutter. Please check this git issue
关于Flutter - 在 Android Studio 和 Flutter 更新后 Dart 失败，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/59309719/