flutter医生--android许可证显示错误消息

Question

如何解决这个错误我在上面展示了很多视频，但这不起作用。我也试过JDK8，但它不起作用。目前在JDK 15上运行。

已安装java 15

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扑动医生-v

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[√] Flutter (Channel dev, 2.3.0-0.1.pre, on Microsoft Windows [Version 10.0.19042.928], locale en-IN)
• Flutter version 2.3.0-0.1.pre at C:srcflutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision d72bfb8d07 (4 weeks ago), 2021-04-26 06:05:55 -0700
• Engine revision de6e1adf97
• Dart version 2.14.0 (build 2.14.0-18.0.dev)
[!] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
• Android SDK at C:UsersSavan RajyaguruAppDataLocalAndroidsdk
• Platform android-30, build-tools 30.0.3
• 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 Files (x86)GoogleChromeApplicationchrome.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 1.56.0)
• VS Code at C:UsersSavan RajyaguruAppDataLocalProgramsMicrosoft VS Code
• Flutter extension can be installed from:
https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter
[√] Connected device (2 available)
• Chrome (web) • chrome • web-javascript • Google Chrome 90.0.4430.212
• Edge (web)   • edge   • web-javascript • Microsoft Edge 90.0.818.66
! Doctor found issues in 1 category.

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扑动医生-安卓授权

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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

在此处输入图像描述

Answer 1

你试过运行这个吗？

flutter doctor --android-licenses

Answer 2

首先，检查您是否有旧的JDK版本，如

1. JDK 1.8.0_301
2. Java SE开发工具包8u202

从这里下载JDKJDK 8版本正确选择您的系统信息[位]。

使用旧版本将无缝运行Flutter和Xamarin应用程序或者，如果您已安装JDK@Latest试着将它们降级到旧版本。