运行flutter run -v时。
预期结果：组装调试过程结束，应用程序在flutter run后准备就绪
实际结果：
卡在Running Gradle task 'assembleDebug'...上和Starting a Gradle Daemon, "N (ANY NUMBER)" busy Daemons could not be reused, use --status for details并且运行过程永远不会结束！
日志：
flutter run -v
[ +56 ms] executing: [C:srcflutter/] git -c log.showSignature=false log -n 1 --pretty=format:%H
[ +185 ms] Exit code 0 from: git -c log.showSignature=false log -n 1 --pretty=format:%H
[ +1 ms] f4abaa0735eba4dfd8f33f73363911d63931fe03
[ ] executing: [C:srcflutter/] git tag --points-at f4abaa0735eba4dfd8f33f73363911d63931fe03
[ +47 ms] Exit code 0 from: git tag --points-at f4abaa0735eba4dfd8f33f73363911d63931fe03
[ ] 2.2.3
[ +5 ms] executing: [C:srcflutter/] git rev-parse --abbrev-ref --symbolic @{u}
[ +35 ms] Exit code 0 from: git rev-parse --abbrev-ref --symbolic @{u}
[ ] origin/stable
[ ] executing: [C:srcflutter/] git ls-remote --get-url origin
[ +31 ms] Exit code 0 from: git ls-remote --get-url origin
[ ] https://github.com/flutter/flutter.git
[ +95 ms] executing: [C:srcflutter/] git rev-parse --abbrev-ref HEAD
[ +35 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD
[ ] stable
[ +54 ms] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'FlutterWebSdk' is not required, skipping update.
[ +2 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
[ +42 ms] executing: C:UsersRavenAppDataLocalAndroidsdkplatform-toolsadb.exe devices -l
[ +37 ms] List of devices attached
emulator-5554 device product:sdk_gphone_x86_arm model:sdk_gphone_x86_arm device:generic_x86_arm transport_id:1
[ +4 ms] C:UsersRavenAppDataLocalAndroidsdkplatform-toolsadb.exe -s emulator-5554 shell getprop
[ +38 ms] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
[ +1 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
[ +65 ms] Skipping pub get: version match.
[ +77 ms] Generating C:UsersRavenAndroidStudioProjectstestappandroidappsrcmainjavaioflutterpluginsGeneratedPluginRegistrant.java
[ +37 ms] ro.hardware = ranchu
[ +9 ms] Using hardware rendering with device sdk gphone x86 arm. If you notice graphics artifacts, consider enabling software rendering with "--enable-software-rendering".
[ +18 ms] Initializing file store
[ +8 ms] Skipping target: gen_localizations
[ +5 ms] complete
[ +3 ms] Launching libmain.dart on sdk gphone x86 arm in debug mode...
[ +3 ms] C:srcflutterbincachedart-sdkbindart.exe --disable-dart-dev C:srcflutterbincacheartifactsenginewindows-x64frontend_server.dart.snapshot --sdk-root
C:srcflutterbincacheartifactsenginecommonflutter_patched_sdk/ --incremental --target=flutter --debugger-module-names --experimental-emit-debug-metadata -DFLUTTER_WEB_AUTO_DETECT=true --output-dill
C:UsersRavenAppDataLocalTempflutter_tools.9d1246b8flutter_tool.faedfc72app.dill --packages C:UsersRavenAndroidStudioProjectstestapp.dart_toolpackage_config.json -Ddart.vm.profile=false -Ddart.vm.product=false
--enable-asserts --track-widget-creation --filesystem-scheme org-dartlang-root --initialize-from-dill build3c113a45063dc6628e68a4111abcacad.cache.dill.track.dill --enable-experiment=alternative-invalidation-strategy
[ +12 ms] executing: C:UsersRavenAppDataLocalAndroidsdkplatform-toolsadb.exe -s emulator-5554 shell -x logcat -v time -t 1
[ +5 ms] <- compile package:testapp/main.dart
[ +34 ms] --------- beginning of main
07-22 21:52:26.801 W/Binder:217_2( 217): type=1400 audit(0.0:151): avc: denied { read } for name="wakeup35" dev="sysfs" ino=19023 scontext=u:r:system_suspend:s0 tcontext=u:object_r:sysfs:s0 tclass=dir permissive=0
[ +8 ms] executing: C:UsersRavenAppDataLocalAndroidsdkplatform-toolsadb.exe version
[ +28 ms] Android Debug Bridge version 1.0.41
Version 30.0.5-6877874
Installed as C:UsersRavenAppDataLocalAndroidsdkplatform-toolsadb.exe
[ +1 ms] executing: C:UsersRavenAppDataLocalAndroidsdkplatform-toolsadb.exe start-server
[ +24 ms] Building APK
[ +13 ms] Running Gradle task 'assembleDebug'...
[ +5 ms] Using gradle from C:UsersRavenAndroidStudioProjectstestappandroidgradlew.bat.
[ +10 ms] executing: C:Program FilesAndroidAndroid Studiojrebinjava -version
[ +105 ms] Exit code 0 from: C:Program FilesAndroidAndroid Studiojrebinjava -version
[ ] openjdk version "11.0.8" 2020-07-14
OpenJDK Runtime Environment (build 11.0.8+10-b944.6842174)
OpenJDK 64-Bit Server VM (build 11.0.8+10-b944.6842174, mixed mode)
[ +1 ms] executing: [C:UsersRavenAndroidStudioProjectstestappandroid/] C:UsersRavenAndroidStudioProjectstestappandroidgradlew.bat -Pverbose=true -Ptarget-platform=android-x86
-Ptarget=C:UsersRavenAndroidStudioProjectstestapplibmain.dart -Pdart-defines=RkxVVFRFUl9XRUJfQVVUT19ERVRFQ1Q9dHJ1ZQ== -Pdart-obfuscation=false -Ptrack-widget-creation=true -Ptree-shake-icons=false
-Pfilesystem-scheme=org-dartlang-root assembleDebug
[+3365 ms] Starting a Gradle Daemon, 129 busy Daemons could not be reused, use --status for details
[+3591 ms] Starting a Gradle Daemon, 130 busy Daemons could not be reused, use --status for details
[+3499 ms] Starting a Gradle Daemon, 131 busy Daemons could not be reused, use --status for details
[+3500 ms] Starting a Gradle Daemon, 132 busy Daemons could not be reused, use --status for details
[+3499 ms] Starting a Gradle Daemon, 133 busy Daemons could not be reused, use --status for details
[+3500 ms] Starting a Gradle Daemon, 134 busy Daemons could not be reused, use --status for details
[+3500 ms] Starting a Gradle Daemon, 135 busy Daemons could not be reused, use --status for details
[+3498 ms] Starting a Gradle Daemon, 136 busy Daemons could not be reused, use --status for details
[+3500 ms] Starting a Gradle Daemon, 137 busy Daemons could not be reused, use --status for details
[+3499 ms] Starting a Gradle Daemon, 138 busy Daemons could not be reused, use --status for details
[+3499 ms] Starting a Gradle Daemon, 139 busy Daemons could not be reused, use --status for details
[+3499 ms] Starting a Gradle Daemon, 140 busy Daemons could not be reused, use --status for details
Terminate batch job (Y/N)? Y
flutter analyze
Analyzing testapp...
No issues found! (ran in 1.0s)
flutter doctor -v
[√] Flutter (Channel stable, 2.2.3, on Microsoft Windows [Version 10.0.18363.778], locale en-US)
• Flutter version 2.2.3 at C:srcflutter
• Framework revision f4abaa0735 (3 weeks ago), 2021-07-01 12:46:11 -0700
• Engine revision 241c87ad80
• Dart version 2.13.4
[!] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
• Android SDK at C:UsersRavenAppDataLocalAndroidsdk
• Platform android-30, build-tools 30.0.2
• Java binary at: C:Program FilesAndroidAndroid Studiojrebinjava
• Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6842174)
X Android license status unknown.
Run `flutter doctor --android-licenses` to accept the SDK licenses.
See https://flutter.dev/docs/get-started/install/windows#android-setup for more details.
[√] Chrome - develop for the web
• Chrome at C:Program FilesGoogleChromeApplicationchrome.exe
[√] Android Studio (version 4.1.0)
• Android Studio at C:Program FilesAndroidAndroid Studio
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6842174)
[√] VS Code (version 1.58.2)
• VS Code at C:UsersRavenAppDataLocalProgramsMicrosoft VS Code
• Flutter extension version 3.24.0
[√] Connected device (3 available)
• sdk gphone x86 arm (mobile) • emulator-5554 • android-x86 • Android 11 (API 30) (emulator)
• Chrome (web) • chrome • web-javascript • Google Chrome 91.0.4472.164
• Edge (web) • edge • web-javascript • Microsoft Edge 91.0.864.67
! Doctor found issues in 1 category.
更新：
当我试图运行扑动医生说的命令时，还有另一个问题：
flutter doctor --android-licenses
Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema
at com.android.repository.api.SchemaModule$SchemaModuleVersion.<init>(SchemaModule.java:156)
at com.android.repository.api.SchemaModule.<init>(SchemaModule.java:75)
at com.android.sdklib.repository.AndroidSdkHandler.<clinit>(AndroidSdkHandler.java:81)
at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:73)
at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:48)
Caused by: java.lang.ClassNotFoundException: javax.xml.bind.annotation.XmlSchema
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
... 5 more
这里有一个问题：
X Android license status unknown.
Run `flutter doctor --android-licenses` to accept the SDK licenses.
我不知道这是否是导致问题的原因，但您需要运行此命令并接受许可证才能正常工作。
flutter doctor --android-licenses
请参阅：flutter医生——android许可证给出java错误