Hacktoberfest 2026: the issues maintainers tagged for October, open and beginner-friendly. Browse Hacktoberfest issues

flutter_tools/gradle: dependency_version_checker.gradle.kts references non-existent com.android.Version class`

Open Beginner friendly
  • Is something wrong?
#192,984 1 comment 0 reactions 0 assignees View on GitHub

Maintainers usually reply within 1 day

Nobody has claimed this yet.

Assessment

Difficulty
1/5
Estimated time
Under an hour
Newbie friendliness
88/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Active
Tech stack
android, kotlin
Domain
build-system

Research direction

Start in packages/flutter_tools/gradle/src/main/kotlin/dependency_version_checker.gradle.kts at line 160, where the Android version class names are referenced. Replace the compile-time class references with the string names used by the reflective loading, then run flutter build apk --debug or assembleDebug to verify that the flutter_tools/gradle module compiles and Android configuration succeeds.

Written by the indexing model from the issue text.

Description

waiting for response
Steps to reproduce
Steps to reproduce
  1. flutter build apk --debug (or assembleDebug directly) any Android
    project on Flutter 3.44.1 (stable), building from a local Flutter SDK
    checkout on Windows.
Expected results

Gradle configuration succeeds.

Actual results

The flutter_tools/gradle module itself fails to compile with
Unresolved reference: Version, before the project's own Gradle files are
even evaluated.

Root cause

packages/flutter_tools/gradle/src/main/kotlin/dependency_version_checker.gradle.kts:160
references com.android.Version::class.java.name (and a fallback
com.android.builder.model.Version::class.java.name) at compile time.
Neither class exists in any real Android Gradle Plugin release — I checked
every AGP jar from 7.3.0 through 8.13.1 byte-for-byte (unzip -l) and none
of them ship a com.android.Version or com.android.builder.model.Version
class. The actual intended usage is via reflection
(classLoader.loadClass(...)), so the class doesn't need to be resolvable
at compile time at all — referencing it via ::class forces the Kotlin
compiler to require it on the compile classpath, which fails.

Fix

Replace the ::class.java.name references with plain string literals
("com.android.Version" / "com.android.builder.model.Version"), since
the class is only ever loaded reflectively:

```kotlin
// before
com.android.Version::class.java.name
// after
"com.android.Version"

Expected results

Confirmed independent of Gradle version (reproduces on 8.14.4, 9.1.0, 9.3.1) and JDK (18, 24). Verified the fix unblocks compilation of the flutter_tools/gradle module. Happy to open a PR.

Actual results

C:\DSW\flutter\bin\flutter.bat doctor --verbose
[√] Flutter (Channel stable, 3.44.1, on Microsoft Windows [versÆo 10.0.26200.9457], locale pt-BR) [321ms]
• Flutter version 3.44.1 on channel stable at C:\DSW\flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 924134a44c (4 months ago), 2026-05-29 12:13:22 -0400
• Engine revision c416acfeb8
• Dart version 3.12.1
• DevTools version 2.57.0
• Feature flags: enable-web, enable-linux-desktop, enable-macos-desktop, enable-windows-desktop, enable-android, enable-ios, cli-animations, enable-native-assets, enable-swift-package-manager, omit-legacy-version-file, enable-lldb-debugging, enable-uiscene-migration

[√] Windows Version (Windows 11 or higher, 25H2, 2009) [1.588ms]

[!] Android toolchain - develop for Android devices (Android SDK version 36.0.0) [927ms]
• Android SDK at C:/Users/luis/AppData/Local/Android/Sdk
• Emulator version 37.1.11.0 (build_id 15917651) (CL:N/A)
• Platform android-CinnamonBun, build-tools 36.0.0
• ANDROID_HOME = C:/Users/luis/AppData/Local/Android/Sdk
• Java binary at: C:\Program Files\Java\jdk-24\bin\java
This JDK is specified in your Flutter configuration.
To change the current JDK, run: flutter config --jdk-dir="path/to/jdk".
• Java version Java(TM) SE Runtime Environment (build 24+36-3646)
X Android license status unknown.
Run flutter doctor --android-licenses to accept the SDK licenses.
See https://flutter.dev/to/windows-android-setup for more details.

[√] Chrome - develop for the web [89ms]
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[√] Visual Studio - develop Windows apps (Visual Studio Community 2022 17.14.19) [88ms]
• Visual Studio at C:\Program Files\Microsoft Visual Studio\2022\Community
• Visual Studio Community 2022 version 17.14.36623.8
• Windows 10 SDK version 10.0.26100.0

[√] Connected device (3 available) [237ms]
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [versÆo 10.0.26200.9457]
• Chrome (web) • chrome • web-javascript • Google Chrome 153.0.8010.50
• Edge (web) • edge • web-javascript • Microsoft Edge 153.0.4234.32

[√] Network resources [361ms]
• All expected network resources are available.

! Doctor found issues in 1 category.
Process finished with exit code 0

Code sample
Code sample 
[Paste your code here]
Screenshots or Video
Screenshots / Video demonstration

[Upload media here]

Logs
Logs 
[Paste your logs here]
Flutter Doctor output
Doctor output 
[Paste your output here]
Dominant language
Dart
Stars
179k
Forks
33.2k
Avg merge
2d 14h
Merged PRs (30d)
407

Getting set up

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

More from flutter/flutter

All issues in flutter/flutter

Similar issues

More Dart issues

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.