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NullPointerException - Parameter specified as non-null is null (updatedKey)

See original GitHub issue

Hi, first of all, thanks for this awesome library, we are using in our KMM project, and its working great. We do have this issue that occurs on some devices, we have seen it on android 11 and 12, and not on android 10 and 9. Here is the stack trace

java.lang.NullPointerException: Parameter specified as non-null is null: method com.russhwolf.settings.AndroidSettings.addListener$lambda-1, parameter updatedKey
    at com.russhwolf.settings.AndroidSettings.addListener$lambda-1
    at com.russhwolf.settings.AndroidSettings.lambda$ejYPvc8UpZPLw0Pu9AuA51-Vbq8
    at com.russhwolf.settings.-$$Lambda$AndroidSettings$ejYPvc8UpZPLw0Pu9AuA51-Vbq8.onSharedPreferenceChanged
    at android.app.SharedPreferencesImpl$EditorImpl.notifyListeners(SharedPreferencesImpl.java:629)
    at android.app.SharedPreferencesImpl$EditorImpl.lambda$notifyListeners$0$SharedPreferencesImpl$EditorImpl(SharedPreferencesImpl.java:643)
    at android.app.SharedPreferencesImpl$EditorImpl$$ExternalSyntheticLambda0.run
    at android.os.Handler.handleCallback(Handler.java:938)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loopOnce(Looper.java:226)
    at android.os.Looper.loop(Looper.java:313)
    at android.app.ActivityThread.main(ActivityThread.java:8633)
    at java.lang.reflect.Method.invoke(Method.java)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:567)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1133)

What’s strange is that we do not attach any listeners when we are creating the Settings class in our Koin setup. So I am puzzled about how and why is Android SharedPreferences calling notifyListeners.

Issue Analytics

State:
Created a year ago
Comments:5 (3 by maintainers)

Top GitHub Comments

1reaction

russhwolfcommented, May 2, 2022

This is fixed in version 0.9

1reaction

russhwolfcommented, Apr 30, 2022

Oh scratch that, it should be rare because AndroidSettings.clear() doesn’t call clear() on the SharedPreferences, it calls remove() on every key instead. The only time you’ll see this issue is if you call preferences.edit().clear().apply() after setting listeners on AndroidSettings. So a better workaround is to call clear() on the Settings instead of the SharedPreferences.

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