Android: ConcurrentModificationException

[samzmann]

I am getting theses crash report from production. This seems to be happening when users try to log in, at which point we restart the app with react-native-restart.

The crash report is hinting at some issue in TreeLifecycleObserver.kt. I am not using Scandit at this point of the app flow (user is only in the login flow). Can you help me understand this?

java.util.ConcurrentModificationException: null
    at java.util.ArrayList$Itr.next(ArrayList.java:860)
    at com.scandit.datacapture.reactnative.core.b.b.b(TreeLifecycleObserver.kt:49)
    at com.scandit.datacapture.reactnative.core.ScanditDataCaptureCoreModule.dispose(ScanditDataCaptureCoreModule.kt:251)
    at com.scandit.datacapture.reactnative.core.ScanditDataCaptureCoreModule.onCatalystInstanceDestroy(ScanditDataCaptureCoreModule.kt:143)
    at com.facebook.react.bridge.BaseJavaModule.invalidate(BaseJavaModule.java:76)
    at com.facebook.react.bridge.ModuleHolder.destroy(ModuleHolder.java:110)
    at com.facebook.react.bridge.NativeModuleRegistry.notifyJSInstanceDestroy(NativeModuleRegistry.java:108)
    at com.facebook.react.bridge.CatalystInstanceImpl$1.run(CatalystInstanceImpl.java:368)
    at android.os.Handler.handleCallback(Handler.java:938)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:27)
    at android.os.Looper.loopOnce(Looper.java:201)
    at android.os.Looper.loop(Looper.java:288)
    at com.facebook.react.bridge.queue.MessageQueueThreadImpl$4.run(MessageQueueThreadImpl.java:226)
    at java.lang.Thread.run(Thread.java:1012)

I am using:

"react-native": "0.67.3",
"react-native-restart": "^0.0.23",
"scandit-react-native-datacapture-barcode": "6.11.0",
"scandit-react-native-datacapture-core": "6.11.0",

These reports have come for Android 10, 11 and 12.

[ScanditSupport]

Hi @samzmann,

Please accept my apologies for the issues you are having, seems this issue is specific to react-native-restart.
Can you please reach out to us directly and share a few snippets of your code on how you implemented Scandit? Submit a request – Frequently Asked Questions (FAQ)