APK build failure: AAPT: error: resource android:attr/lStar not found

[jpwoodbu]

Steps to reproduce:

1. flutter create delme
2. cd delme
3. Ensure the demo app can build an APK without error. flutter build apk
4. flutter pub add flutter_android_volume_keydown
5. Rebuild APK to see error message. flutter build apk.

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':flutter_android_volume_keydown:verifyReleaseResources'.
> A failure occurred while executing com.android.build.gradle.tasks.VerifyLibraryResourcesTask$Action
   > Android resource linking failed
     ERROR: /home/jpwoodbu/devel/delme/build/flutter_android_volume_keydown/intermediates/merged_res/release/values/values.xml:194: AAPT: error: resource android:attr/lStar not found.


* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.

BUILD FAILED in 43s
Running Gradle task 'assembleRelease'...                           43.7s
Gradle task assembleRelease failed with exit code 1

[jpwoodbu]

I should add my env details.

$ flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.27.1, on Ubuntu 22.04.5 LTS 6.5.0-45-generic, locale en_US.UTF-8)
[✓] Android toolchain - develop for Android devices (Android SDK version 35.0.0)
[✓] Chrome - develop for the web
[✓] Linux toolchain - develop for Linux desktop
[✓] Android Studio (version 2024.1)
[✓] VS Code (version 1.96.4)
[✓] Connected device (2 available)
[✓] Network resources

• No issues found!

This is with flutter_android_volume_keydown: ^1.0.1 in my pubspec.yaml.

Also of note, flutter build appbundle works fine.

[jgoyvaerts]

Can't reproduce on Flutter 3.22.2 on Windows.

I'll try to trace it down on your version but I'll have to do that somewhere in a few days

[jpwoodbu]

Thanks for taking a look.

I found https://stackoverflow.com/questions/69033022/message-error-resource-androidattr-lstar-not-found which lead me to experiment with editing ~/.pub-cache/hosted/pub.dev/flutter_android_volume_keydown-1.0.1/android/build.gradle to set compileSdkVersion to 34.

And that fixed it for me. However, I do not know if making that change upstream is safe.

[Dkrinker]

Having the same issue. Setting the compileSdkVersion in the build.gradle file for flutter_android_volume_keydown-1.0.1 to 34 did not fix the issue for me.

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':uni_links:verifyReleaseResources'.

A failure occurred while executing com.android.build.gradle.tasks.VerifyLibraryResourcesTask$Action
Android resource linking failed
ERROR:/Users/davidkrinker/Development/flutter_apps/ct_concept/build/uni_links/intermediates/merged_res/release/values/values.xml:194: AAPT: error: resource android:attr/lStar not found.

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.24.3, on macOS 15.3.1 24D70 darwin-arm64 (Rosetta), locale en-US)
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 16.2)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2023.3)
[✓] VS Code (version 1.97.2)
[✓] Connected device (5 available)
[✓] Network resources

• No issues found!

[yenchieh]

I’ve opened a PR (#10 ) to address error

[jpwoodbu]

Android SDK version 33.0.0

@Dkrinker, I wonder if using an SDK version < 34 explains why the workaround didn't help you.