flutter 医生 --android-licenses 显示错误消息

Question

how to solve this error I show many video on it but that can not works. I tried also JDK 8 but it doesn't works. Currently running on JDK 15.

Installed java 15

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flutter doctor -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:\src\flutter
    • 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:\Users\Savan Rajyaguru\AppData\Local\Android\sdk
    • Platform android-30, build-tools 30.0.3
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • 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)\Google\Chrome\Application\chrome.exe

[√] Android Studio (version 4.1.0)
    • Android Studio at C:\Program Files\Android\Android 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:\Users\Savan Rajyaguru\AppData\Local\Programs\Microsoft 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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flutter doctor --android-licenses

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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

enter image description here

Answer 1

have you tried running this?

flutter doctor --android-licenses

Answer 2

First, check if you have the older JDK version such as

1. JDK 1.8.0_301
2. Java SE Development Kit 8u202

Download JDKs from here JDK 8 versions Choose your system info [bit] correctly.

Using older versions will run Flutter and Xamarin applications seamlessly Or if you have installed JDK@Latest try downgrading them to an older version.