android-crash | android程序崩溃异常处理框架

After adding a jar file containing some functionality that I need to my application, my proguard build hasn't been working. the error message I get after running my proguard build is:

I am following an old tutorial about LiveData and ViewModel.These are the links.

1. [https://www.youtube.com/watch?v=d7UxPYxgBoA][1]
2. [https://resocoder.com/2018/09/07/mvvm-on-android-crash-course-kotlin-android-architecture-components/]

I am getting an error in InjectUtil.kt class while initiating FakeDatabase class and getting it's variable. I am following the tutorial and do not know why I am getting it.

Am looking for errors in the il2cpp build of Unity for android, according to this guide https://support.unity3d.com/hc/en-us/articles/115000292166-Symbolicate-Android-crash

It specifies the 32 bit short address 0043a05c, which after executing the following command

This recent crash started happening on across every Android versions within various device manufacturers. I believe it has something to do with either advertisements or one of Google's components.

I opened an issue myself here: https://issuetracker.google.com/issues/149665852

Related information about the devices (from 2k users there are 48 exceptions from 43 users so far, happened in 3 days)

Stack trace (package name is hidden due to confidentiality):

After upgrading my app from Xamarin.Forms 4.1.0.709244 to 4.2.0.709249 (or any package version newer), code that was working previously without fail now no longer works and crashes, but only under one specific circumstance.

My app receives push notifications via the OneSignal package, and the expected behavior is:

1. A notification arrives and is opened
2. The notification opened handler saves the payload to App class parameters and sets Application.Current.MainPage = new MainPage();
3. Logic inside the MainPage initializer parses the payload to determine what page the user needs to be navigated to, and creates a Page object for that new page.
4. Detail page is set to the new page

Under 4.1, this worked as expected. Clicking on the notification, the user would be taken to the corresponding page in the app under all scenarios. After upgrading to 4.2+, this scenario fails if the app is not currently running, but works as expected if the app is running and either in foreground or in background.

When it fails, instead of the app loading and then the user being taken to the correct page, the app loads but then just sits at the default main page (as if Detail hadn't been set using the info from the notification payload). As well, at this point if you tap on the hamburger icon the navigation menu displays briefly and the app immediately crashes with a null reference exception seen below:

System.NullReferenceException: Object reference not set to an instance of an object at Xamarin.Forms.Platform.Android.AppCompat.Platform.Xamarin.Forms.Platform.Android.IPlatformLayout.OnLayout (System.Boolean changed, System.Int32 l, System.Int32 t, System.Int32 r, System.Int32 b) [0x0002b] in <596751900f1f46919eb25349c2e7053a>:0 at Xamarin.Forms.Platform.Android.PlatformRenderer.OnLayout (System.Boolean changed, System.Int32 l, System.Int32 t, System.Int32 r, System.Int32 b) [0x00025] in <596751900f1f46919eb25349c2e7053a>:0 at Android.Views.ViewGroup.n_OnLayout_ZIIII (System.IntPtr jnienv, System.IntPtr native__this, System.Boolean changed, System.Int32 l, System.Int32 t, System.Int32 r, System.Int32 b) [0x00009] in <21b22bf2aca24508938d2117f4c11761>:0 at (wrapper dynamic-method) Android.Runtime.DynamicMethodNameCounter.28(intptr,intptr,bool,int,int,int,int)

As this scenario only occurs when the app is closed and started via the notification action, I cannot use the Visual Studio debugger to identify exactly where the exception is occurring. I used Microsoft AppCenter to add a number of events that would track progress through the various methods and then report where in the logic flow the crash occurred, but all expected steps are progressing to completion. The step to set the Detail page to be the new page is being called, and the isPresentedChanged handler that is called when the hamburger icon is tapped is also running to completion.

I have reviewed the release notes for 4.2 here and while there are a few fixes related to layout of page that might be related to the crash, I get the feeling the crash is more a symptom of the change to the Detail page not happening correctly than a problem I need to solve outright. I have found a few similar-sounding errors reported to the Xamarin team, but they are all closed out as resolved and are not exactly the same problem. See here, here, here, here, and here for those.

NotificationServices.cs (Service extension for OneSignal; Code now fails regardless of which userNotificationType is passed):

I have an app which has to create Sprite-instances on the fly based on data contained in byte arrays (PNGs and JPGs). The following code is used to create the sprites: