"Android license status unknown" error on Flutter 1.12 with Android Studio 3.6 #51712

vicentetfreitas · 2020-02-29T22:44:15Z

[Updated by @timsneath]
On a clean installation of Flutter 1.12 stable and Android Studio 3.6, you get the following error message:

Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, v1.12.13+hotfix.8, on Microsoft Windows [Version 10.0.18362.657], locale en-US)
[!] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
    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 3.6)
[!] Connected device
    ! No devices available

Workaround is here: #51712 (comment)

The text was updated successfully, but these errors were encountered:

gdlis · 2020-03-01T07:14:23Z

I am facing this issue with the latest installation of Android Studio (3.6). Flutter doctor is reporting:

Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, v1.12.13+hotfix.8, on Microsoft Windows [Version 10.0.18362.657], locale en-US)
[!] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
    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 3.6)
[!] Connected device
    ! No devices available

! Doctor found issues in 2 categories.

when the flutter doctor --android-licenses command was run:

Android sdkmanager tool not found (C:\Users\User\AppData\Local\Android\sdk\tools\bin\sdkmanager).
Try re-installing or updating your Android SDK,
visit https://flutter.dev/setup/#android-setup for detailed instructions.

The location specified by the tool (C:\Users\User\AppData\Local\Android\sdk\tools\bin\sdkmanager) does not exist.

I found a post on SO that stated installing JDK8 resolves the problem. So I tried installing JDK8 and set the SDK location via `File->Other Settings->Default Project Structure->SDKs' in Android Studio. But the problem was not resolved.

zzzworm · 2020-03-01T13:23:06Z

Also same issue: when i call sdkmanager --version
Warning: Could not create settings
java.lang.IllegalArgumentException
at com.android.sdklib.tool.sdkmanager.SdkManagerCliSettings.(SdkManagerCliSettings.java:428)
at com.android.sdklib.tool.sdkmanager.SdkManagerCliSettings.createSettings(SdkManagerCliSettings.java:152)
at com.android.sdklib.tool.sdkmanager.SdkManagerCliSettings.createSettings(SdkManagerCliSettings.java:134)
at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:57)
at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:48)
but if i run sdkmanager --sdk_root=${ANDROID_HOME} --update it works. but flutter doctor --android-licenses still failed

zzzworm · 2020-03-01T13:23:44Z

also
flutter doctor --android-licenses -v

A newer version of the Android SDK is required. To update, run:
/Users/nali/Library/Android/sdk/tools/bin/sdkmanager --update

#0      throwToolExit (package:flutter_tools/src/base/common.dart:14:3)
#1      AndroidLicenseValidator.runLicenseManager
(package:flutter_tools/src/android/android_workflow.dart:365:7)
#2      Doctor.diagnose (package:flutter_tools/src/doctor.dart:262:38)
#3      DoctorCommand.runCommand
(package:flutter_tools/src/commands/doctor.dart:58:39)
#4      FlutterCommand.verifyThenRunCommand
(package:flutter_tools/src/runner/flutter_command.dart:711:18)
#5      _rootRunUnary (dart:async/zone.dart:1134:38)
#6      _CustomZone.runUnary (dart:async/zone.dart:1031:19)
#7      _FutureListener.handleValue (dart:async/future_impl.dart:140:18)
#8      Future._propagateToListeners.handleValueCallback
(dart:async/future_impl.dart:682:45)
#9      Future._propagateToListeners (dart:async/future_impl.dart:711:32)
#10     Future._completeWithValue (dart:async/future_impl.dart:526:5)
#11     Future._asyncComplete.<anonymous closure>
(dart:async/future_impl.dart:556:7)
#12     _rootRun (dart:async/zone.dart:1126:13)
#13     _CustomZone.run (dart:async/zone.dart:1023:19)
#14     _CustomZone.runGuarded (dart:async/zone.dart:925:7)
#15     _CustomZone.bindCallbackGuarded.<anonymous closure>
(dart:async/zone.dart:965:23)
#16     _microtaskLoop (dart:async/schedule_microtask.dart:43:21)
#17     _startMicrotaskLoop (dart:async/schedule_microtask.dart:52:5)
#18     _runPendingImmediateCallback
(dart:isolate-patch/isolate_patch.dart:118:13)
#19     _Timer._runTimers (dart:isolate-patch/timer_impl.dart:405:11)
#20     _Timer._handleMessage (dart:isolate-patch/timer_impl.dart:429:5)
#21     _RawReceivePortImpl._handleMessage
(dart:isolate-patch/isolate_patch.dart:168:12)

zzzworm · 2020-03-01T13:47:16Z

Also it is strange I can run success from Android Studio, but can't flutter run from command line.

RobbiNespu · 2020-03-02T04:02:48Z

I having same problem

PS D:\Workplace\flutter_projects> flutter doctor -v
[√] Flutter (Channel stable, v1.12.13+hotfix.8, on Microsoft Windows [Version 10.0.18363.657], locale en-MY)
    • Flutter version 1.12.13+hotfix.8 at D:\Workplace\flutter
    • Framework revision 0b8abb4724 (3 weeks ago), 2020-02-11 11:44:36 -0800
    • Engine revision e1e6ced81d
    • Dart version 2.7.0

[!] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
    • Android SDK at C:\Users\Robbi\AppData\Local\Android\sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-29, build-tools 29.0.3
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b04)
    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 3.6)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin version 44.0.2
    • Dart plugin version 192.7761
    • Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b04)

[√] VS Code (version 1.42.1)
    • VS Code at C:\Users\Robbi\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.8.1

[√] Connected device (1 available)
    • SM A505F • XXXXXYYYZHW • android-arm64 • Android 9 (API 28)

! Doctor found issues in 1 category.

I try accepting the license with ./sdkmanager.bat --licenses (using this step https://robbinespu.gitlab.io/blog/2020/03/02/flutter-issue-android-license-status-unknown-on-windows/)

but it still does't work

and I notice there is no TOOLs directory on SDK

PS D:\Workplace\flutter_projects> flutter doctor --android-licenses -
Android sdkmanager tool not found (C:\Users\Robbi\AppData\Local\Android\sdk\tools\bin\sdkmanager).
Try re-installing or updating your Android SDK,
visit https://flutter.dev/setup/#android-setup for detailed instructions.

iapicca · 2020-03-02T08:39:49Z

Hi @vicentetfreitas
could you please run flutter doctor --android-licence --verbose

@gdlis @RobbiNespu did you follow the instructions in your logs?

PS D:\Workplace\flutter_projects> flutter doctor --android-licenses -
Android sdkmanager tool not found (C:\Users\Robbi\AppData\Local\Android\sdk\tools\bin\sdkmanager).
Try re-installing or updating your Android SDK,
visit https://flutter.dev/setup/#android-setup for detailed instructions.

@izzzworm

A newer version of the Android SDK is required. To update, run:
/Users/nali/Library/Android/sdk/tools/bin/sdkmanager --update

Thank you all

TahaTesser · 2020-03-02T08:53:03Z

Hi @vicentetfreitas

Your SDK folder doesn't have SDK Tools

To download, SDK tools, Open Android Studio, go to SDK Manager and SDK tools tab and make sure Android SDK Tools is installed

Then run flutter doctor --android-licence --verbose and accept all licenses

Thank you

RobbiNespu · 2020-03-02T09:05:04Z

there is NO android SDK tools appears on android studio 3.6.1

mukkulsingh · 2020-03-02T09:36:26Z

C:\Users\KD\AndroidStudioProjects\flutter_app>flutter doctor --android-licenses --verbose
Android sdkmanager tool not found (C:\Users\KD\AppData\Local\Android\sdk\tools\bin\sdkmanager).
Try re-installing or updating your Android SDK,
visit https://flutter.dev/setup/#android-setup for detailed instructions.

#0 throwToolExit (package:flutter_tools/src/base/common.dart:27:3)
#1 #2 #3 #4 #5 #6 #7 #8 #9 #10 #11 #12 #13 #14 #15 #16 #17 #18 #19 #20 AndroidLicenseValidator.runLicenseManager (package:flutter_tools/src/android/android_workflow.dart:309:7)
Doctor.diagnose (package:flutter_tools/src/doctor.dart:247:38)
DoctorCommand.runCommand (package:flutter_tools/src/commands/doctor.dart:58:39)
FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:638:18)
_asyncThenWrapperHelper. (dart:async-patch/async_patch.dart:75:64)
_rootRunUnary (dart:async/zone.dart:1134:38)
_CustomZone.runUnary (dart:async/zone.dart:1031:19)
_FutureListener.handleValue (dart:async/future_impl.dart:140:18)
Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:682:45)
Future._propagateToListeners (dart:async/future_impl.dart:711:32)
Future._completeWithValue (dart:async/future_impl.dart:526:5)
Future._asyncComplete. (dart:async/future_impl.dart:556:7)
_rootRun (dart:async/zone.dart:1126:13)
_CustomZone.run (dart:async/zone.dart:1023:19)
_CustomZone.runGuarded (dart:async/zone.dart:925:7)
_CustomZone.bindCallbackGuarded. (dart:async/zone.dart:965:23)
_microtaskLoop (dart:async/schedule_microtask.dart:43:21)
_startMicrotaskLoop (dart:async/schedule_microtask.dart:52:5)
_runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:118:13)
_RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:169:5)

TahaTesser · 2020-03-02T09:47:25Z

Hi @vicentetfreitas @RobbiNespu @mukkulsingh
If you can't see SDK tools in your SDK manager in your Android Studio

Please download it manually from https://developer.android.com/studio
Open link and scroll the all way down until you see Command line tools only
Download Windows Zip if you're on Windows and extract this zip and paste the tools in your SDK and then run flutter doctor --android-licence --verbose

Thank you

mukkulsingh · 2020-03-02T10:02:19Z

Hello @TahaTesser Have Tried doing what you wrote. Unfortunately it didn't worked.

C:\Users\KD\AppData\Local\Android\Sdk\tools\bin>flutter doctor --android-licenses --verbose
A newer version of the Android SDK is required. To update, run:
C:\Users\KD\AppData\Local\Android\sdk\tools\bin\sdkmanager --update

#0 throwToolExit (package:flutter_tools/src/base/common.dart:27:3)
#1 AndroidLicenseValidator.runLicenseManager (package:flutter_tools/src/android/android_workflow.dart:315:7)
#2 Doctor.diagnose (package:flutter_tools/src/doctor.dart:247:38)
#3 DoctorCommand.runCommand (package:flutter_tools/src/commands/doctor.dart:58:39)
#4 FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:638:18)
#5 _asyncThenWrapperHelper. (dart:async-patch/async_patch.dart:75:64)
#6 _rootRunUnary (dart:async/zone.dart:1134:38)
#7 _CustomZone.runUnary (dart:async/zone.dart:1031:19)
#8 _FutureListener.handleValue (dart:async/future_impl.dart:140:18)
#9 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:682:45)
#10 Future._propagateToListeners (dart:async/future_impl.dart:711:32)
#11 Future._completeWithValue (dart:async/future_impl.dart:526:5)
#12 Future._asyncComplete. (dart:async/future_impl.dart:556:7)
#13 _rootRun (dart:async/zone.dart:1126:13)
#14 _CustomZone.run (dart:async/zone.dart:1023:19)
#15 _CustomZone.runGuarded (dart:async/zone.dart:925:7)
#16 _CustomZone.bindCallbackGuarded. (dart:async/zone.dart:965:23)
#17 _microtaskLoop (dart:async/schedule_microtask.dart:43:21)
#18 _startMicrotaskLoop (dart:async/schedule_microtask.dart:52:5)
#19 _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:118:13)
#20 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:169:5)

C:\Users\KD\AppData\Local\Android\Sdk\tools\bin>sdkmanager --update
Warning: Could not create settings
java.lang.IllegalArgumentException
at com.android.sdklib.tool.sdkmanager.SdkManagerCliSettings.(SdkManagerCliSettings.java:428)
at com.android.sdklib.tool.sdkmanager.SdkManagerCliSettings.createSettings(SdkManagerCliSettings.java:152)
at com.android.sdklib.tool.sdkmanager.SdkManagerCliSettings.createSettings(SdkManagerCliSettings.java:134)
at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:57)
at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:48)
Usage:
sdkmanager [--uninstall] [] [--package_file=] [...]
sdkmanager --update []
sdkmanager --list []
sdkmanager --licenses []
sdkmanager --version

With --install (optional), installs or updates packages.
By default, the listed packages are installed or (if already installed)
updated to the latest version.
With --uninstall, uninstall the listed packages.

<package> is a sdk-style path (e.g. "build-tools;23.0.0" or
         "platforms;android-23").
<package-file> is a text file where each line is a sdk-style path
               of a package to install or uninstall.
Multiple --package_file arguments may be specified in combination
with explicit paths.

With --update, all installed packages are updated to the latest version.

With --list, all installed and available packages are printed out.

With --licenses, show and offer the option to accept licenses for all
available packages that have not already been accepted.

With --version, prints the current version of sdkmanager.

Common Arguments:
--sdk_root=: Use the specified SDK root instead of the SDK
containing this tool

--channel=<channelId>: Include packages in channels up to <channelId>.
                       Common channels are:
                       0 (Stable), 1 (Beta), 2 (Dev), and 3 (Canary).

--include_obsolete: With --list, show obsolete packages in the
                    package listing. With --update, update obsolete
                    packages as well as non-obsolete.

--no_https: Force all connections to use http rather than https.

--proxy=<http | socks>: Connect via a proxy of the given type.

--proxy_host=<IP or DNS address>: IP or DNS address of the proxy to use.

--proxy_port=<port #>: Proxy port to connect to.

--verbose: Enable verbose output.

If the env var REPO_OS_OVERRIDE is set to "windows",
"macosx", or "linux", packages will be downloaded for that OS.

iapicca · 2020-03-02T10:10:48Z

Hi all
this is also a possible solution
Thank you

mukkulsingh · 2020-03-02T10:45:01Z

@iapicca
Thanks for the effort but still it didn't worked.

I tried upgrading sdk from Android/Sdk/cmdline-tools/latest
it did upgraded and when i ran "sdkmanager --licenses" i was able to accept licenses
but even after this flutter doctor gives this:-
C:\Users\KD\AppData\Local\Android\Sdk\cmdline-tools\latest\bin>flutter doctor -v
[√] Flutter (Channel beta, v1.14.6, on Microsoft Windows [Version 10.0.17763.805], locale en-IN)
• Flutter version 1.14.6 at C:\flutter
• Framework revision fabeb2a (5 weeks ago), 2020-01-28 07:56:51 -0800
• Engine revision c4229bf
• Dart version 2.8.0 (build 2.8.0-dev.5.0 fc3af737c7)

[!] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
• Android SDK at C:\Users\KD\AppData\Local\Android\sdk
• Android NDK location not configured (optional; useful for native profiling support)
• Platform android-29, build-tools 29.0.3
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b04)
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.

[√] Chrome - develop for the web
• Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.exe

[√] Android Studio (version 3.6)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin version 44.0.2
• Dart plugin version 192.7761
• Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b04)

[√] VS Code (version 1.42.1)
• VS Code at C:\Users\KD\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.4.1

[√] Connected device (2 available)
• Chrome • chrome • web-javascript • Google Chrome 80.0.3987.122
• Web Server • web-server • web-javascript • Flutter Tools

! Doctor found issues in 1 category.

Came across to many solution but not able to get through this issue with any of those solution out there.

i would like to know why does flutter doctor tell us to update sdk even if we are using the updated (29) one.

Please paste the solution here if anybody gets a working solution

0x10000 · 2020-03-02T11:02:41Z

This is my solution:
1.Download "Command line tools only" from https://developer.android.com/studio , then you'll get the "tools" folder, move it to the sdk root.
2.Restart Android Studio, you'll get a sdk-tools update tips, click update.
3. Run command "flutter doctor --android-licenses", the licences will shown.

mebden · 2020-03-02T12:20:41Z

Re: 0x10000's suggestion: this might work in some cases but did not work for me.

A more reliable solution is in my github comment (by mebden) here and in the stackoverflow exchange here.

Basically, in the screen shot above, uncheck Hide Obsolete Packages and you'll see Android SDK Tools (Obsolete) 26.1.1.

My hope is that this bug can be addressed by somebody in the next Flutter version, as several users have been affected from last week onwards.

TahaTesser · 2020-03-02T12:32:24Z

Hi @vicentetfreitas

Your SDK tools folder name is wrong, rename it to `tools and you don't need latest folder i your tools

RobbiNespu · 2020-03-03T01:39:11Z

My solution same like mentioned before, the SDK tool are obsolete so it won't appear by default.

Open your SDK manager then uncheck Hide Obsolete Packages and you’ll see Android SDK Tools (Obsolete) 26.1.1 appears.

if needed we can download package manually here https://dl.google.com/android/repository/sdk-tools-windows-4333796.zip

pacifio · 2020-03-03T12:30:16Z

Google updated their android studio and didn't make flutter adapt to it which made the installation way harder ..

jhasan94 · 2020-03-16T07:27:06Z

This solution worked for me.

1.Scroll down and Download Command line tools only from this link .[https://developer.android.com/studio#downloads]
2.Put your Downloaded file (tools) in this location C:\Users\ABC\AppData\ABC\Android\Sdk
3.close your android studio , and again open android studio. And check update .
4.open command line and past (flutter doctor --android-licenses) ,don’t use parenthesis.
5. And press ‘y’ for accept
6. Run flutter doctor you should be good.

maheshj01 · 2020-03-16T11:55:24Z

for android license status unknown issue I would recommend you guys to follow this answer
https://stackoverflow.com/a/60705505/8253662

JacquesWaltz · 2020-03-16T17:04:42Z

Still having this problem: ✗ Android license status unknown.

Log:

Runned flutter doctor

[!] Android toolchain - develop for Android devices (Android SDK version 30.0.0-rc1) ✗ 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.

Runned flutter doctor --android-licenses

A newer version of the Android SDK is required. To update, run: /Users/x/Library/Android/sdk/tools/bin/sdkmanager --update

Runned /Users/x/Library/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

Cannot update SDKmanager. I've already tried re-installing all SDK tools (obsolete ones too) and via Android Studio.
So, what should I do now?

aster94 · 2020-03-16T17:16:09Z

I think that if so many people are facing problems the problem should be resolved by the flutter team
btw downloading the whole android studio should make life easier not complex

jhasan94 · 2020-03-16T17:22:13Z

Still having this problem: ✗ Android license status unknown.

Log:
1. Runned `flutter doctor`
[!] Android toolchain - develop for Android devices (Android SDK version 30.0.0-rc1) ✗ 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.
1. Runned `flutter doctor --android-licenses`
A newer version of the Android SDK is required. To update, run: /Users/x/Library/Android/sdk/tools/bin/sdkmanager --update
1. Runned `/Users/x/Library/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

Cannot update SDKmanager. (I've already tried re-installing all SDK tools via Android Studio).
So, what should I do now?

close your android studio and again run it ,Now check for update from your android studio

JacquesWaltz · 2020-03-16T20:00:05Z

Still having this problem: ✗ Android license status unknown.

Log:
1. Runned `flutter doctor`
[!] Android toolchain - develop for Android devices (Android SDK version 30.0.0-rc1) ✗ 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.
1. Runned `flutter doctor --android-licenses`
A newer version of the Android SDK is required. To update, run: /Users/x/Library/Android/sdk/tools/bin/sdkmanager --update
1. Runned `/Users/x/Library/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
Cannot update SDKmanager. (I've already tried re-installing all SDK tools via Android Studio).
So, what should I do now?
close your android studio and again run it ,Now check for update from your android studio

Android Studio fully upgraded. Still not working.

timsneath · 2020-03-17T21:52:32Z

This issue is confirmed in the Flutter 1.12.13+hotfix.8 release, which at the time of writing is the latest version available in the stable channel. Later builds contain a fix; in the meantime, the workaround is to manually add the Android SDK Tools (Obsolete) tool from the Android SDK Manager dialog in Android Studio. More detailed instructions can be found in the getting started documentation.

maheshj01 · 2020-03-18T02:37:41Z

This issue is confirmed in the Flutter 1.12.13+hotfix.8 release, which at the time of writing is the latest version available in the stable channel. Later builds contain a fix; in the meantime, the workaround is to manually add the Android SDK Tools (Obsolete) tool from the Android SDK Manager dialog in Android Studio. More detailed instructions can be found in the getting started documentation.

heres the step by step guide

open sdk manager
under sdk tools uncheck hide obsolete packages at the bottom
then you should see an option called Android Sdk Tools (Obsolete)

check it and apply and let the studio download the package
once done run the command flutter doctor and it should now prompt you to run flutter doctor --android-licenses
once you run the license command accept all licenses by hitting y and it should solve the problem

PolymathWhiz · 2020-03-19T05:53:46Z

I solved my problem by doing this,

Visit this link (https://developer.android.com/studio) and then Scroll down and Download your OS-specific Command line tools.
Drop your Downloaded file (tools) in this location C:\Users/ABC/Android/Sdk
Close your android studio, and again open android studio. And check update.
Open your terminal or command line and paste -> flutter doctor --android-licenses
And press ‘y’ for accept to accept the different licenses
Run flutter doctor you should be good.

JacquesWaltz · 2020-03-19T11:06:57Z

I solved my problem by doing this,

Visit this link (https://developer.android.com/studio) and then Scroll down and Download your OS-specific Command line tools.

Drop your Downloaded file (tools) in this location C:\Users/ABC/Android/Sdk

Close your android studio, and again open android studio. And check update.

Open your terminal or command line and paste -> flutter doctor --android-licenses

And press ‘y’ for accept to accept the different licenses

Run flutter doctor you should be good.

I already have the 'tools' folder because Android Studio was installed properly, with all the packages including 'Command line tools'. Running on macOS btw.

JacquesWaltz · 2020-03-19T11:11:24Z

I solved my problem by doing this,

Visit this link (https://developer.android.com/studio) and then Scroll down and Download your OS-specific Command line tools.

Drop your Downloaded file (tools) in this location C:\Users/ABC/Android/Sdk

Close your android studio, and again open android studio. And check update.

Open your terminal or command line and paste -> flutter doctor --android-licenses

And press ‘y’ for accept to accept the different licenses

Run flutter doctor you should be good.

I already have the 'tools' folder because Android Studio was installed properly, with all the packages including 'Command line tools'. Running on macOS btw.

The thing is, when I first installed Flutter all went fine and I already accepted all the licenses. When I tried 'flutter doctor' the next day, android licenses where back to not being accepted. I've tried everything, any other solutions?

paraita · 2020-03-20T10:23:46Z

I have the same problem, went through all propositions without success.
In my case I have the following error when running sdkmanager:

Warning: Could not create settings
java.lang.IllegalArgumentException
	at com.android.sdklib.tool.sdkmanager.SdkManagerCliSettings.<init>(SdkManagerCliSettings.java:428)
	at com.android.sdklib.tool.sdkmanager.SdkManagerCliSettings.createSettings(SdkManagerCliSettings.java:152)
	at com.android.sdklib.tool.sdkmanager.SdkManagerCliSettings.createSettings(SdkManagerCliSettings.java:134)
	at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:57)
	at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:48)
Usage:
  sdkmanager [--uninstall] [<common args>] [--package_file=<file>] [<packages>...]
  sdkmanager --update [<common args>]
  sdkmanager --list [<common args>]
  sdkmanager --licenses [<common args>]
  sdkmanager --version

With --install (optional), installs or updates packages.
    By default, the listed packages are installed or (if already installed)
    updated to the latest version.
With --uninstall, uninstall the listed packages.

    <package> is a sdk-style path (e.g. "build-tools;23.0.0" or
             "platforms;android-23").
    <package-file> is a text file where each line is a sdk-style path
                   of a package to install or uninstall.
    Multiple --package_file arguments may be specified in combination
    with explicit paths.

With --update, all installed packages are updated to the latest version.

With --list, all installed and available packages are printed out.

With --licenses, show and offer the option to accept licenses for all
     available packages that have not already been accepted.

With --version, prints the current version of sdkmanager.

Common Arguments:
    --sdk_root=<sdkRootPath>: Use the specified SDK root instead of the SDK
                              containing this tool

    --channel=<channelId>: Include packages in channels up to <channelId>.
                           Common channels are:
                           0 (Stable), 1 (Beta), 2 (Dev), and 3 (Canary).

    --include_obsolete: With --list, show obsolete packages in the
                        package listing. With --update, update obsolete
                        packages as well as non-obsolete.

    --no_https: Force all connections to use http rather than https.

    --proxy=<http | socks>: Connect via a proxy of the given type.

    --proxy_host=<IP or DNS address>: IP or DNS address of the proxy to use.

    --proxy_port=<port #>: Proxy port to connect to.

    --verbose: Enable verbose output.

* If the env var REPO_OS_OVERRIDE is set to "windows",
  "macosx", or "linux", packages will be downloaded for that OS.

I'm running MacOS Catalina

g8d3 · 2020-03-20T12:53:44Z

I have the same problem, went through all propositions without success.
In my case I have the following error when running sdkmanager:
Warning: Could not create settings
java.lang.IllegalArgumentException
	at com.android.sdklib.tool.sdkmanager.SdkManagerCliSettings.<init>(SdkManagerCliSettings.java:428)
	...

I got that. And this helped, using --sdk_root=${ANDROID_HOME} this step passes:

sdkmanager --update --sdk_root=${ANDROID_HOME}

However flutter doctor still does not complete successfully. I am getting:

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, v1.12.13+hotfix.8, on Linux, locale en_US.UTF-8)
[!] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
    ✗ 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 3.6)
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
[!] Connected device
    ! No devices available

! Doctor found issues in 3 categories.

g8d3 · 2020-03-20T14:11:38Z

Here is how it worked for me.

I Installed Android SDK using studio.sh from official installer.

That created 2 folders: SDK folder which by default is ~/Android/Sdk, and folder ~/.AndroidStudio3.6

After installation finished and faced several problems. I tried PolymathWhiz suggestion and I got a different message from the console.

Then I tried this:

Run studio.sh from Android SDK installer
Welcome to Android studio window appears
Click configure, then click sdk manager
Go to tab Sdk Tools
Check Android Sdk tools and click apply
For some reason it was unchecked after installation
flutter doctor output:

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, v1.12.13+hotfix.8, on Linux, locale en_US.UTF-8)
 
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
[!] Android Studio (version 3.6)
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
[!] Connected device
    ! No devices available

Went to same configure window and clicked on plugins, then searched for flutter. Installed it. And now flutter doctor outputs:

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, v1.12.13+hotfix.8, on Linux, locale en_US.UTF-8)
 
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
[✓] Android Studio (version 3.6)
[!] Connected device
    ! No devices available

! Doctor found issues in 1 category.

Which is good since I now only need to connect a device for it to work.

JacquesWaltz · 2020-03-20T17:10:41Z

Here is how it worked for me.

I Installed Android SDK using studio.sh from official installer.

That created 2 folders: SDK folder which by default is ~/Android/Sdk, and folder ~/.AndroidStudio3.6

After installation finished and faced several problems. I tried PolymathWhiz suggestion and I got a different message from the console.

Then I tried this:

Run studio.sh from Android SDK installer

Welcome to Android studio window appears

Click configure, then click sdk manager

Go to tab Sdk Tools

Check Android Sdk tools and click apply

For some reason it was unchecked after installation

flutter doctor output:
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, v1.12.13+hotfix.8, on Linux, locale en_US.UTF-8)
 
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
[!] Android Studio (version 3.6)
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
[!] Connected device
    ! No devices available
Went to same configure window and clicked on plugins, then searched for flutter. Installed it. And now flutter doctor outputs:
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, v1.12.13+hotfix.8, on Linux, locale en_US.UTF-8)
 
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
[✓] Android Studio (version 3.6)
[!] Connected device
    ! No devices available

! Doctor found issues in 1 category.
Which is good since I now only need to connect a device for it to work.

Are you running on mac or PC?

paraita · 2020-03-20T18:35:06Z

After installation finished and faced several problems. I tried PolymathWhiz suggestion and I got a different message from the console.

@g8d3 thanks mate that trick worked !

timsneath · 2020-03-20T18:59:33Z

Locking this issue to prevent it being polluted by other unrelated issues.

The issue reported at the top of the page is confirmed in the Flutter 1.12.13+hotfix.8 release, which at the time of writing is the latest version available in the stable channel. Later builds contain a fix; in the meantime, the workaround is to manually add the Android SDK Tools (Obsolete) tool from the Android SDK Manager dialog in Android Studio. More detailed instructions can be found in the getting started documentation.

For other issues, please open a new bug, including the results of flutter doctor -v.

jonahwilliams · 2020-05-30T18:16:45Z

Closing as fixed

vicentetfreitas changed the title ~~X Android license status unknown..~~ X Android license status unknown. Feb 29, 2020

iapicca changed the title ~~X Android license status unknown.~~ flutter doctor --android-licenses : Android sdkmanager tool not found Mar 2, 2020

iapicca added the waiting for customer response The Flutter team cannot make further progress on this issue until the original reporter responds label Mar 2, 2020

iapicca mentioned this issue Mar 2, 2020

Newwer version of android sdk is required #51726

Closed

iapicca mentioned this issue Mar 2, 2020

How to solve: Android license status unknown and also Android sdkmanager tool not found? Tried everything(as i think) #51670

Closed

iapicca added customer: crowd Affects or could affect many people, though not necessarily a specific customer. tool Affects the "flutter" command-line tool. See also t: labels. platform-android Android applications specifically labels Mar 2, 2020

This was referenced Mar 2, 2020

Failed to download the Android dependencies on flutter precache #51742

Closed

Showing error in the “flutter doctor” about Android toolchain #51730

Closed

jmagman mentioned this issue Mar 3, 2020

Android license status unknown. #31116

Open

TahaTesser mentioned this issue Mar 3, 2020

Flutter SDK Tools is marked as obsolete in android studio. #51793

Closed

iapicca mentioned this issue Mar 16, 2020

flutter doctor --android-licenses A newer version of the Android SDK is required. To update, run: #52644

Closed

TahaTesser mentioned this issue Mar 17, 2020

A newer version of the Android SDK is required. To update, run: C:\Users\sunuw\AppData\Local\Android\sdk\tools\bin\sdkmanager --updateException in thread "main" java.lang.NoClassDefFoundError: #52719

Closed

timsneath mentioned this issue Mar 17, 2020

Android sdkmanager tool not found (C:...\Local\Android\sdk\tools\bin\sdkmanager) #20976

Closed

timsneath changed the title ~~flutter doctor --android-licenses : Android sdkmanager tool not found~~ "Android license status unknown" error on Flutter 1.12 with Android Studio 3.6 Mar 17, 2020

This was referenced Mar 18, 2020

flutter doctor --android-licenses --verbose #52792

Closed

flutter doctor - Android license status unknown #52776

Closed

timsneath closed this as completed Mar 20, 2020

timsneath reopened this Mar 20, 2020

flutter locked as off-topic and limited conversation to collaborators Mar 20, 2020

jonahwilliams closed this as completed May 30, 2020

"Android license status unknown" error on Flutter 1.12 with Android Studio 3.6 #51712

"Android license status unknown" error on Flutter 1.12 with Android Studio 3.6 #51712

Comments

vicentetfreitas commented Feb 29, 2020 • edited by timsneath Loading

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RobbiNespu commented Mar 2, 2020 • edited Loading

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TahaTesser commented Mar 2, 2020 • edited Loading

Your SDK folder doesn't have SDK Tools

RobbiNespu commented Mar 2, 2020

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TahaTesser commented Mar 2, 2020

Your SDK tools folder name is wrong, rename it to `tools and you don't need latest folder i your tools

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jhasan94 commented Mar 16, 2020

This solution worked for me.

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