Getting ClasscastException at FlutterSplashView.java for one of my published APP

user_12680031 0
Viewed 831

My APP is published in Google Play Store and it crashes in some devices. Is it related to the Splash screen? I don't implement any Splash screen so, not sure what cause this error.

java.lang.ClassCastException: at io.flutter.embedding.android.FlutterSplashView.onRestoreInstanceState (FlutterSplashView.java) at android.view.View.dispatchRestoreInstanceState (View.java:20262) at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:4039) at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:4045) at android.view.View.restoreHierarchyState (View.java:20240) at com.android.internal.policy.PhoneWindow.restoreHierarchyState (PhoneWindow.java:2184) at android.app.Activity.onRestoreInstanceState (Activity.java:1195) at android.app.Activity.performRestoreInstanceState (Activity.java:1150) at android.app.Instrumentation.callActivityOnRestoreInstanceState (Instrumentation.java:1321) at android.app.ActivityThread.handleStartActivity (ActivityThread.java:3161) at android.app.servertransaction.TransactionExecutor.performLifecycleSequence (TransactionExecutor.java:180) at android.app.servertransaction.TransactionExecutor.cycleToPath (TransactionExecutor.java:165) at android.app.servertransaction.TransactionExecutor.executeLifecycleState (TransactionExecutor.java:142) at android.app.servertransaction.TransactionExecutor.execute (TransactionExecutor.java:70) at android.app.ActivityThread$H.handleMessage (ActivityThread.java:1955) at android.os.Handler.dispatchMessage (Handler.java:106) at android.os.Looper.loop (Looper.java:214) at android.app.ActivityThread.main (ActivityThread.java:7091) at java.lang.reflect.Method.invoke (Method.java) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:494) at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:965)

flutter classcastexception android
1 Answers

According to this issue on Flutter's repo, if you are using Flutter 1.12.13+hotfix.9 or earlier, the recommended approach is to setup a Proguard rule that will not obfuscate the FlutterSplashView.SavedState class.

In <your-app-directory>/android/app/proguard-rules.pro, add this line:

-keep public class io.flutter.embedding.android.FlutterSplashView.$SavedState { *; }

Check also this article about Flutter and Android Obfuscation.

user_8073240
Related