souvenirs is a great app but one more crash report

[jkbentley4]

type: crash
osVersion: google/raven/raven:14/UQ1A.240105.002/2024012600:user/release-keys
package: fr.nuage.souvenirs:30
process: fr.nuage.souvenirs
processUptime: 17705 + 207 ms
installer: com.android.packageinstaller

java.lang.NullPointerException: Attempt to invoke virtual method 'int java.util.ArrayList.size()' on a null object reference
    at fr.nuage.souvenirs.viewmodel.PageDiffUtilCallback.getOldListSize(PageDiffUtilCallback.java:19)
    at androidx.recyclerview.widget.DiffUtil.calculateDiff(DiffUtil.java:123)
    at androidx.recyclerview.widget.DiffUtil.calculateDiff(DiffUtil.java:105)
    at fr.nuage.souvenirs.view.PageEditAdapter.setPages(PageEditAdapter.java:54)
    at fr.nuage.souvenirs.view.EditPageFragment.lambda$onCreateView$4$fr-nuage-souvenirs-view-EditPageFragment(EditPageFragment.java:153)
    at fr.nuage.souvenirs.view.EditPageFragment$$ExternalSyntheticLambda12.onChanged(Unknown Source:4)
    at androidx.lifecycle.LiveData.considerNotify(LiveData.java:133)
    at androidx.lifecycle.LiveData.dispatchingValue(LiveData.java:151)
    at androidx.lifecycle.LiveData.setValue(LiveData.java:309)
    at androidx.lifecycle.MutableLiveData.setValue(MutableLiveData.java:50)
    at androidx.lifecycle.Transformations$1.onChanged(Transformations.java:76)
    at androidx.lifecycle.MediatorLiveData$Source.onChanged(MediatorLiveData.java:152)
    at androidx.lifecycle.LiveData.considerNotify(LiveData.java:133)
    at androidx.lifecycle.LiveData.dispatchingValue(LiveData.java:146)
    at androidx.lifecycle.LiveData$ObserverWrapper.activeStateChanged(LiveData.java:468)
    at androidx.lifecycle.LiveData.observeForever(LiveData.java:234)
    at androidx.lifecycle.MediatorLiveData$Source.plug(MediatorLiveData.java:141)
    at androidx.lifecycle.MediatorLiveData.onActive(MediatorLiveData.java:118)
    at androidx.lifecycle.LiveData.changeActiveCounter(LiveData.java:390)
    at androidx.lifecycle.LiveData$ObserverWrapper.activeStateChanged(LiveData.java:466)
    at androidx.lifecycle.LiveData$LifecycleBoundObserver.onStateChanged(LiveData.java:425)
    at androidx.lifecycle.LifecycleRegistry$ObserverWithState.dispatchEvent(LifecycleRegistry.java:354)
    at androidx.lifecycle.LifecycleRegistry.forwardPass(LifecycleRegistry.java:265)
    at androidx.lifecycle.LifecycleRegistry.sync(LifecycleRegistry.java:307)
    at androidx.lifecycle.LifecycleRegistry.moveToState(LifecycleRegistry.java:148)
    at androidx.lifecycle.LifecycleRegistry.handleLifecycleEvent(LifecycleRegistry.java:134)
    at androidx.fragment.app.FragmentViewLifecycleOwner.handleLifecycleEvent(FragmentViewLifecycleOwner.java:88)
    at androidx.fragment.app.Fragment.performStart(Fragment.java:3060)
    at androidx.fragment.app.FragmentStateManager.start(FragmentStateManager.java:587)
    at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:279)
    at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:1840)
    at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:1764)
    at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:1701)
    at androidx.fragment.app.FragmentManager$4.run(FragmentManager.java:488)
    at android.os.Handler.handleCallback(Handler.java:958)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loopOnce(Looper.java:205)
    at android.os.Looper.loop(Looper.java:294)
    at android.app.ActivityThread.main(ActivityThread.java:8279)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:552)
    at com.android.internal.os.ExecInit.main(ExecInit.java:49)
    at com.android.internal.os.RuntimeInit.nativeFinishInit(Native Method)
    at com.android.internal.os.RuntimeInit.main(RuntimeInit.java:359)

Thank you!

[zorgluf]

Thanks for reporting. But for this one I am kind of stuck... don't know how it can be possible to have this kind of error. Could you give me more context ? When it happens ? It will help me identify the buggy pattern. Thanks.

[jkbentley4]

The crash happens after I start a new album, type in the title and then try to add a page. If I type in the title, edit the title and then add a page iy does not crash. Hopefully this will help.

-------- Original Message -------- On Feb 2, 2024, 3:23 PM, zorgluf wrote:

Thanks for reporting. But for this one I am kind of stuck... don't know how it can be possible to have this kind of error. Could you give me more context ? When it happens ? It will help me identify the buggy pattern. Thanks.

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