[Android] ConcurrentModificationException in FabricUIManager #49783
Description
Description
In this commit you have changed the flag mMountNotificationScheduled from AtomicBoolean to boolean
- @NonNull private final AtomicBoolean mMountNotificationScheduled = new AtomicBoolean(false);
+ private boolean mMountNotificationScheduled = false;
but the line changing its value to true was removed
- boolean mountNotificationScheduled = mMountNotificationScheduled.getAndSet(true);
so now the flag is always false.
This is probably the reason of the ConcurrentModificationException.
Steps to reproduce
Couldn't provide minimum steps. It happens when animating the image to slide in. Reanimated version: 3.16.1
React Native Version
0.76.7
Affected Platforms
Runtime - Android
Areas
Fabric - The New Renderer
Output of npx @react-native-community/cli info
System:
OS: macOS 15.3.1
CPU: (10) arm64 Apple M1 Pro
Memory: 158.77 MB / 32.00 GB
Shell:
version: "5.9"
path: /bin/zsh
Binaries:
Node:
version: 22.12.0
path: ~/.volta/tools/image/node/22.12.0/bin/node
Yarn:
version: 1.22.22
npm:
version: 10.9.0
path: ~/.volta/tools/image/node/22.12.0/bin/npm
Watchman:
version: 2025.02.17.00
path: /opt/homebrew/bin/watchman
Managers:
CocoaPods:
version: 1.16.0
SDKs:
iOS SDK:
Platforms:
- DriverKit 24.1
- iOS 18.1
- macOS 15.1
- tvOS 18.1
- visionOS 2.1
- watchOS 11.1
Android SDK:
API Levels:
- "33"
- "34"
- "35"
Build Tools:
- 33.0.1
- 34.0.0
- 35.0.0
- 35.0.1
- 36.0.0
System Images:
- android-31 | Google Play ARM 64 v8a
- android-34 | Google Play ARM 64 v8a
- android-35 | Google APIs ARM 64 v8a
- android-35 | Google Play ARM 64 v8a
Android NDK: 26.3.11579264
IDEs:
Android Studio: 2024.2 AI-242.23726.103.2422.12816248
Xcode:
version: 16.1/16B40
path: /usr/bin/xcodebuild
Languages:
Java:
version: 17.0.13
path: /usr/bin/javac
Ruby:
version: 3.1.0
npmPackages:
"@react-native-community/cli": Not Found
react:
installed: 18.3.1
wanted: 18.3.1
react-native:
installed: 0.76.7
wanted: 0.76.7
react-native-macos: Not Found
npmGlobalPackages:
"*react-native*": Not Found
Android:
hermesEnabled: true
newArchEnabled: true
iOS:
hermesEnabled: true
newArchEnabled: false
Stacktrace or Logs
E FATAL EXCEPTION: main
java.util.ConcurrentModificationException at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:1111)
at java.util.ArrayList$Itr.next(ArrayList.java:1064)
at com.facebook.react.fabric.FabricUIManager$MountItemDispatchListener$1.run(FabricUIManager.java:1281)
at android.os.Handler.handleCallback(Handler.java:958)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:230)
at android.os.Looper.loop(Looper.java:319)
at android.app.ActivityThread.main(ActivityThread.java:8919)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:578)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1103)
Reproducer
Screenshots and Videos
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