java - Flutter 医生说我有许可问题

Question

我开始在 android studio 尝试重新编译程序以满足新的 64 位要求时遇到一堆问题。开始给我一个奇怪的错误，即未设置 JAVA_HOME 环境变量。奇怪，因为它在上次编译时有效。 Android studio 有一个全新版本，所以我运行了所有升级，这就是我尝试运行 flutter doctor 时得到的结果。我怀疑问题与 jdk 13.0.1 有一些差异有关，但不确定我应该尝试安装哪个版本，或者也许我找错了地方。

c:\src\flutter> flutter 医生

Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, v1.9.1+hotfix.5, on Microsoft Windows [Version 10.0.17763.805], locale en-CA)
[!] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
    X Android license status unknown.
      Try re-installing or updating your Android SDK Manager.
      See https://developer.android.com/studio/#downloads or visit https://flutter.dev/setup/#android-setup for detailed
      instructions.
[√] Android Studio (version 3.5)
[!] Connected device

! Doctor found issues in 2 categories.

c:\src\flutter>flutter doctor --android-licenses

A newer version of the Android SDK is required. To update, run:
C:\Users\mctrivia\AppData\Local\Android\sdk\tools\bin\sdkmanager --update

c:\src\flutter>C:\Users\mctrivia\AppData\Local\Android\sdk\tools\bin\sdkmanager --update

Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema
        at com.android.repository.api.SchemaModule$SchemaModuleVersion.<init>(SchemaModule.java:156)
        at com.android.repository.api.SchemaModule.<init>(SchemaModule.java:75)
        at com.android.sdklib.repository.AndroidSdkHandler.<clinit>(AndroidSdkHandler.java:81)
        at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:73)
        at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:48)
Caused by: java.lang.ClassNotFoundException: javax.xml.bind.annotation.XmlSchema
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
        ... 5 more

Answer 1

解决了问题。需要注册oracle账号并下载Java 8 SDK