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

[vicentetfreitas]

[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)

[gdlis]

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]

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]

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]

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

[RobbiNespu]

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]

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]

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]

there is NO android SDK tools appears on android studio 3.6.1

[mukkulsingh]

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 AndroidLicenseValidator.runLicenseManager (package:flutter_tools/src/android/android_workflow.dart:309:7)
#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)

[TahaTesser]

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]

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.