Android Studio hangs with high CPU during project open/indexing with Gradle (with latest stable Android Studio and Flutter)

[labaxter]

I originally filled a report with Android Studio: https://issuetracker.google.com/issues/443795727 , This was marked as 'Won't fix'. They suggested filing will the flutter team. Hence this report.

The hang occurs in an indexing loop in LibraryIndexableIteratorHandler(). See thread dumps attached.

This problem occurred while I was trying make projects (created several years ago) usable with the latest upgraded flutter and a very recent download of Android Studio Narwal. See attached files. This is reproduce-able with a freshly created project using flutter:

Steps to reproduce:

1. Create a dummy project with flutter: flutter create dummy
2. From the project root, remove gradle generated files: rm -rf .idea android/.gradle .gradle *.iml ~/.gradle/caches/ ~/.gradle/daemon/
3. Open the project in Android Studio. Android Studio hangs with all CPU cores maxed out. Pressing cancel on the right hand side of the status bar will give one back control, and one can edit project files, but Android Studio does not know about Gradle. The Gradle Menu is greyed out in Tool Windows, and Gradle does not appear in the right hand tool bar, and there is no gradle sync capability in Android Studio. Also after creating an android emulator, the project application will build and can be launched into the emulator.

Note that a command line build with flutter build apt -v will run to completion successfully.

The problem can be avoided by removing the following line from ./android settings.gradle.kts but android studio will not know about Gradle, and will not be able to execute gradle sync.

includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")

After cancelling the indexing, the Gradle tool window and Gradle-related menu items are HIDDEN or unavailable in Android Studio.

This is 100% repeatable.

DiagnosticsReport20250909-113750.zip
doctor.txt
studio_version.txt
threaddump1.txt
threaddump2.txt

[pq]

Thanks for the thorough report!

What version of the Flutter and Dart plugins are you using? Also, could you add the output of flutter doctor -v?

[labaxter]

`lab@lws ~/src/vui flutter --version
Flutter 3.35.3 • channel stable • https://github.com/flutter/flutter.git
Framework • revision a402d9a437 (11 days ago) • 2025-09-03 14:54:31 -0700
Engine • hash 672c59cfa87c8070c20ba2cd1a6c2a1baf5cf08b (revision ddf47dd3ff) (10 days ago) • 2025-09-03 20:02:13.000Z
Tools • Dart 3.9.2 • DevTools 2.48.0'

Dart SDK version: 3.9.2 (stable) (Wed Aug 27 03:49:40 2025 -0700) on "linux_x64"

I see no plugins specific to flutter or dart.

Here ia the potentially relevant list of plugins from my pubspec.yaml files (three of them on used by the other two projects as a library of common code):

'
environment:
sdk: ">=3.0.0"
sdk: ">=2.17.6 <3.0.0"
flutter: ">=1.17.0"

cupertino_icons: ^1.0.2

provider: ^6.1.1
get_storage: ^2.0.3
uuid: ^4.3.3

cupertino_icons: ^1.0.8
http: ^1.1.0
provider: ^6.0.2
json_serializable: ^6.1.5
json_annotation: ^4.4.0
timeago: ^3.2.2
get_storage: ^2.1.1
url_launcher: ^6.1.0
flutter_launcher_icons: ^0.14.2
another_flushbar: ^1.10.29

provider: ^6.0.2
timeago: ^3.2.2
device_info_plus: ^11.1.0
another_flushbar: ^1.10.29
local_auth: ^2.1.0
path_provider_android: ^2.2.1
path_provider: ^2.1.1
platform: ^3.1.0
'

If you are asking about Android Studio plugins, there are the following:

• adb_idea
• dart
• flutter
• IdeaVim
• Perl
• Jetpack Compose (i'm not sure why this is here)
• Gradle (is bundled but disabled)
• Code Coverage for Java (bundled)
• Eclipse Keymap
• Netbeans Keymap
• Visual Studio Keymap
• Compose Multiplatform (bundled)
• Groovy (bundled)
• Java (bundled)
• Json (bundled)
• Kotlin (bundled)
• Markdown
• Shell Script
• YAML (bundled)
• Machine Learning Code Completion (bundled)
• Turbo Complete (bundled)
• JUnit (bundled)
• TestNG (bundled)
• Git (bundled)
• GitHub (bundled)
• Gitlab (bundled)
• Mercurial (bundled)
• Model Commit Interface (bundled)
• Subversion (bundled)
• Android ABK Support (bundled)
• Android NDK Support (bundled)
• Android SDK Upgrade Assistant (bundled)
• ClangConfig (bundled)
• Clangd Support (bundled)
• ClangFormat (bundled)
• Configuration Script (bundled)
• Copyright (bundled)
• Device Streaming (bundled)
• Editor Config (bundled)
• Firebase Services (bundled)
• Firebase Testing (bundled)
• Gemini (bundled)
• Git for App Insights (bundled)
• Gradle Declarative Support (bundled)
• IntelliLang (bundled)
• Java Byte Code Decompiler (bundled)
• Java IDE Customization (bundled)
• Java Internationalization (bundled)
• Jave Stream Debugger (bundled)
• Performance Testing (bundled)
• Task Management (bundled)
• Terminal (bundled)
• Test Recorder (bundled)
• TextMage Bundles (bundled)
• WebP Support (bundled)

`

doctor-output.txt

[pq]

Ah, sorry I wasn't more clear! I was wondering what versions of the IDE plugins you had. (Fond in the Plugins section of your IDE settings. For example:

Thanks!

[labaxter]

The IDE plugins were listed in my previous comment... I had thought that might have been what you were looking for. I've repeated them below:

• adb_idea
• dart
• flutter
• IdeaVim
• Perl
• Jetpack Compose (i'm not sure why this is here)
• Gradle (is bundled but disabled)
• Code Coverage for Java (bundled)
• Eclipse Keymap
• Netbeans Keymap
• Visual Studio Keymap
• Compose Multiplatform (bundled)
• Groovy (bundled)
• Java (bundled)
• Json (bundled)
• Kotlin (bundled)
• Markdown
• Shell Script
• YAML (bundled)
• Machine Learning Code Completion (bundled)
• Turbo Complete (bundled)
• JUnit (bundled)
• TestNG (bundled)
• Git (bundled)
• GitHub (bundled)
• Gitlab (bundled)
• Mercurial (bundled)
• Model Commit Interface (bundled)
• Subversion (bundled)
• Android ABK Support (bundled)
• Android NDK Support (bundled)
• Android SDK Upgrade Assistant (bundled)
• ClangConfig (bundled)
• Clangd Support (bundled)
• ClangFormat (bundled)
• Configuration Script (bundled)
• Copyright (bundled)
• Device Streaming (bundled)
• Editor Config (bundled)
• Firebase Services (bundled)
• Firebase Testing (bundled)
• Gemini (bundled)
• Git for App Insights (bundled)
• Gradle Declarative Support (bundled)
• IntelliLang (bundled)
• Java Byte Code Decompiler (bundled)
• Java IDE Customization (bundled)
• Java Internationalization (bundled)
• Jave Stream Debugger (bundled)
• Performance Testing (bundled)
• Task Management (bundled)
• Terminal (bundled)
• Test Recorder (bundled)
• TextMage Bundles (bundled)
• WebP Support (bundled)

[pq]

Sorry. Again, I wasn't clear. I was wondering about the version numbers. (For example, 87.1 is the latest Flutter plugin version.)

[labaxter]

From the Plugs window:

Dart 251.27623,5
Flutter 87.1

[pq]

Thank you!

[AlexV525]

@labaxter Would you like to help identify if recent fixes have resolved your issue? You can download the nightly dev version from here, and install that version using "Install Plugin from Disk" in the "Settings > Plugins".

[labaxter]

That was quick... I would be happy to help.... I will not get to it until Thursday, and I'll want a clear way to back it out if I need to. :-) Thanks for asking ...

…

On Mon, Sep 22, 2025, 9:39 AM Alex Li ***@***.***> wrote: *AlexV525* left a comment (flutter/flutter-intellij#8518) <#8518 (comment)> @labaxter <https://github.com/labaxter> Would you like to help identify if recent fixes have resolved your issue? You can download the nightly dev version from here <https://plugins.jetbrains.com/plugin/9212-flutter/versions/dev>, and install that version using "Install Plugin from Disk" in the "Settings > Plugins". QQ_1758548281591.png (view on web) <https://github.com/user-attachments/assets/fb0b7712-130a-4e0e-8254-53310c59c782> — Reply to this email directly, view it on GitHub <#8518 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AE6MHK2CCTEGO3HJVZRLE7L3T732BAVCNFSM6AAAAACGEN5DJ2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTGMJZGEYDKNRRHE> . You are receiving this because you were mentioned.Message ID: ***@***.***>