ConcurrentModificationException #20272
Description
- Review the documentation: https://facebook.github.io/react-native
- Search for existing issues: https://github.com/facebook/react-native/issues
- Use the latest React Native release: https://github.com/facebook/react-native/releases
Environment
Environment:
OS: macOS High Sierra 10.13.5
Node: 8.11.3
Yarn: 1.7.0
npm: 5.6.0
Watchman: 4.9.0
Xcode: Xcode 9.4.1 Build version 9F2000
Android Studio: 3.1 AI-173.4697961
Packages: (wanted => installed)
react: 16.4.1 => 16.4.1
react-native: 0.55.4 => 0.55.4
Description
Caused by java.util.ConcurrentModificationException
at android.support.v4.util.SimpleArrayMap.put(SimpleArrayMap.java:461)
at android.support.v7.widget.AppCompatDrawableManager.addDelegate(AppCompatDrawableManager.java:493)
at android.support.v7.widget.AppCompatDrawableManager.installDefaultInflateDelegates(AppCompatDrawableManager.java:97)
at android.support.v7.widget.AppCompatDrawableManager.get(AppCompatDrawableManager.java:86)
at android.support.v7.content.res.AppCompatResources.getDrawable(AppCompatResources.java:100)
at android.support.v7.widget.TintTypedArray.getDrawable(TintTypedArray.java:75)
at android.support.v7.widget.SwitchCompat.<init>(SwitchCompat.java:223)
at android.support.v7.widget.SwitchCompat.<init>(SwitchCompat.java:200)
at android.support.v7.widget.SwitchCompat.<init>(SwitchCompat.java:189)
at com.facebook.react.views.switchview.ReactSwitch.<init>(ReactSwitch.java:23)
at com.facebook.react.views.switchview.ReactSwitchManager.createViewInstance(ReactSwitchManager.java:118)
at com.facebook.react.views.switchview.ReactSwitchManager.createViewInstance(ReactSwitchManager.java:31)
at com.facebook.react.uimanager.ViewManager.createView(ViewManager.java:42)
at com.facebook.react.uimanager.NativeViewHierarchyManager.createView(NativeViewHierarchyManager.java:223)
at com.facebook.react.uimanager.UIViewOperationQueue$CreateViewOperation.execute(UIViewOperationQueue.java:152)
at com.facebook.react.uimanager.UIViewOperationQueue$DispatchUIFrameCallback.dispatchPendingNonBatchedOperations(UIViewOperationQueue.java:1012)
at com.facebook.react.uimanager.UIViewOperationQueue$DispatchUIFrameCallback.doFrameGuarded(UIViewOperationQueue.java:983)
at com.facebook.react.uimanager.GuardedFrameCallback.doFrame(GuardedFrameCallback.java:29)
at com.facebook.react.modules.core.ReactChoreographer$ReactChoreographerDispatcher.doFrame(ReactChoreographer.java:134)
at com.facebook.react.modules.core.ChoreographerCompat$FrameCallback$1.doFrame(ChoreographerCompat.java:105)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:909)
at android.view.Choreographer.doCallbacks(Choreographer.java:686)
at android.view.Choreographer.doFrame(Choreographer.java:619)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:7325)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
Reproducible Demo
No idea how to reproduce as occurs randomly in release builds. The stack trace is from Crashlytics. Seems to be related on how React Native updates the UI. Our code does not have much control over the native screen updating and as JavaScript is single threaded, there isn't much we can do about concurrency.