Flutter：Android 许可证状态未知

Question

I have seen similar issues but they somehow could not resolve my issue. I am currently using Windows and Versions Java 8, Java SDK 13.0.1, Android Studio v3.5.2.

1) I First typed flutter doctor and got the following error: Android license status unknown.

2) I then entered flutter doctor --android-licenses and got the following command

A newer version of the Android SDK is required.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

3) Running this line I ended up here:

D:\flutter\flutter>C:\Users\user\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

Please let me know the simple steps i could follow as I am confused about this a lot!

Answer 1

To resolve, try running flutter doctor --android-licenses . This should prompt you to accept licenses just type y and enter to accept the licence if error persists check out this issue