[Bug]: (Unity/Android) com.onesignal.common.modeling.Model.getStringProperty (java.lang.NullPointerException)

[devyte]

What happened?

This report is almost identical to #1745 with one minor difference: in our case the crash happens in BootUpReceiver instead of UpgradeReceiver.

Our application was on v5.0.0-beta1 of the Unity SDK. We started seeing crashes in the google play console related to onesignal. We then saw that beta2 came out, so tried upgrading, but crashes keep showing up, see the full stacktrace below.

To be explicit, the stacktrace attached below was pulled from builds using beta2.

My suspicion is that the PR for #1745 missed a fix in some obscure code corner, but that's just a wild guess.

Steps to reproduce?

Our use is pretty basic: we call `OneSignal.Default.Initialize("SomeAppIdHere")` after which we check permissions.

What did you expect to happen?

I expect no crashes.

OneSignal Android SDK version

v5.0.0-beta2

Android version

13, 12, 11, 10, 9, 8

Specific Android models

Over 400 different devices total, way too many to list here in detail, but here are some of the top ones:

Samsung:
* j2 core lte
* a01 core
* a3 core
* a12/s, a13, a21s, a03, a10s, a33x, a51
* bunch of others

Motorola:
* cypfq
* pokerp
* caprip
* maltalsc
* bunch of others

LG
* mdh35lm

ZTE:
* P731F50
* P731F20

Relevant log output

Type `java.lang.RuntimeException`

Exception java.lang.RuntimeException: Unable to start receiver com.onesignal.notifications.receivers.BootUpReceiver: java.lang.NullPointerException: null cannot be cast to non-null type kotlin.String
  at android.app.ActivityThread.handleReceiver (ActivityThread.java:3210)
  at android.app.ActivityThread.-wrap17
  at android.app.ActivityThread$H.handleMessage (ActivityThread.java:1678)
  at android.os.Handler.dispatchMessage (Handler.java:106)
  at android.os.Looper.loop (Looper.java:164)
  at android.app.ActivityThread.main (ActivityThread.java:6543)
  at java.lang.reflect.Method.invoke
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:440)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:810)
Caused by java.lang.NullPointerException: null cannot be cast to non-null type kotlin.String
  at com.onesignal.common.modeling.Model.getStringProperty (Model.kt:215)
  at com.onesignal.common.modeling.Model.getStringProperty$default (Model.kt:215)
  at com.onesignal.core.internal.config.ConfigModel.getAppId (ConfigModel.kt:12)
  at com.onesignal.user.internal.operations.impl.listeners.SubscriptionModelStoreListener.getAddOperation (SubscriptionModelStoreListener.kt:24)
  at com.onesignal.user.internal.operations.impl.listeners.SubscriptionModelStoreListener.getAddOperation (SubscriptionModelStoreListener.kt:15)
  at com.onesignal.core.internal.operations.listeners.ModelStoreListener.onModelAdded (ModelStoreListener.kt:36)
  at com.onesignal.common.modeling.ModelStore$addItem$1.invoke (ModelStore.kt:110)
  at com.onesignal.common.modeling.ModelStore$addItem$1.invoke (ModelStore.kt:110)
  at com.onesignal.common.events.EventProducer.fire (EventProducer.kt:40)
  at com.onesignal.common.modeling.ModelStore.addItem (ModelStore.kt:110)
  at com.onesignal.common.modeling.ModelStore.addItem$default (ModelStore.kt:98)
  at com.onesignal.common.modeling.ModelStore.add (ModelStore.kt:46)
  at com.onesignal.common.modeling.ModelStore.replaceAll (ModelStore.kt:81)
  at com.onesignal.common.modeling.IModelStore$DefaultImpls.replaceAll$default (IModelStore.kt:81)
  at com.onesignal.internal.OneSignalImp.createAndSwitchToNewUser (OneSignalImp.kt:396)
  at com.onesignal.internal.OneSignalImp.createAndSwitchToNewUser$default (OneSignalImp.kt:343)
  at com.onesignal.internal.OneSignalImp.initWithContext (OneSignalImp.kt:202)
  at com.onesignal.OneSignal.initWithContext (OneSignal.kt:196)
  at com.onesignal.notifications.receivers.BootUpReceiver.onReceive (BootUpReceiver.kt:38)
  at android.app.ActivityThread.handleReceiver (ActivityThread.java:3203)

### Code of Conduct

- [X] I agree to follow this project's Code of Conduct

<!-- probot = {"onesignal-probot":{"response_time_in_business_days":7}} -->

[jennantilla]

Hi @devyte, thanks for reaching out! We're looking into this and will get back to you as soon as possible.

[jennantilla]

Hi @devyte! If you upgrade your Unity SDK to 5.0.0-beta.3 this should resolve the issue!

[devyte]

@jennantilla Thank you very much! I already see the new version in the Unity package manager, so I'll coordinate checking this on our side ASAP.

[jennantilla]

@devyte I'll go ahead and close this issue but please let us know if you are still facing any difficulties.