Reown AppKit Unity – iOS Build AppKit initialization fails

[keshavgame]

Is Reown AppKit Unity actually working on iOS for anyone using Unity 6000.0.58f2 or other latest Unity 6 versions?

On iOS (device) AppKit initialization fails. Here are logs :

[WalletManager] Calling AppKit.InitializeAsync... [WalletManager] InitializeAppKit error: System.NullReferenceException: Object reference not set to an instance of an object.   at Newtonsoft.Json.Serialization.DefaultContractResolver.GetCallbackMethodsForType (System.Type type, System.Collections.Generic.List1[Newtonsoft.Json.Serialization.SerializationCallback]& onSerializing, System.Collections.Generic.List1[Newtonsoft.Json.Serialization.SerializationCallback]& onSerialized, System.Collections.Generic.List1[Newtonsoft.Json.Serialization.SerializationCallback]& onDeserializing, System.Collections.Generic.List1[Newtonsoft.Json.Serialization.SerializationCallback]& onDeserialized, System.Collections.Generic.List1[Newtonsoft.Json.Serialization.SerializationErrorCallback]& onError) [0x00000] in <00000000000000000000000000000000>:0    at Newtonsoft.Json.Serialization.DefaultContractResolver.ResolveCallbackMethods (Newtonsoft.Json.Serialization.JsonContract contract, System.Type t) [0x00000] in <00000000000000000000000000000000>:0    at Newtonsoft.Json.Serialization.DefaultContractResolver.InitializeContract (Newtonsoft.Json.Serialization.JsonContract contract) [0x00000] in <00000000000000000000000000000000>:0    at Newtonsoft.Json.Serialization.DefaultContractResolver.CreateDictionaryContract (System.Type objectType) [0x00000] in <00000000000000000000000000000000>:0    at System.Collections.Concurrent.ConcurrentDictionary2[TKey,TValue].GetOrAdd (TKey key, System.Func2[T,TResult] valueFactory) [0x00000] in <00000000000000000000000000000000>:0    at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.Serialize (Newtonsoft.Json.JsonWriter jsonWriter, System.Object value, System.Type objectType) [0x00000] in <00000000000000000000000000000000>:0    at Newtonsoft.Json.JsonSerializer.SerializeInternal (Newtonsoft.Json.JsonWriter jsonWriter, System.Object value, System.Type objectType) [0x00000] in <00000000000000000000000000000000>:0    at Newtonsoft.Json.JsonConvert.SerializeObjectInternal (System.Object value, System.Type type, Newtonsoft.Json.JsonSerializer jsonSerializer) [0x00000] in <00000000000000000000000000000000>:0    at Reown.Core.Storage.FileSystemStorage.Save () [0x00000] in <00000000000000000000000000000000>:0    at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[TStateMachine] (TStateMachine& stateMachine) [0x00000] in <00000000000000000000000000000000>:0    at Reown.Core.Storage.FileSystemStorage.Save () [0x00000] in <00000000000000000000000000000000>:0    at Reown.Core.Storage.FileSystemStorage.SetItem[T] (System.String key, T value) [0x00000] in <00000000000000000000000000000000>:0    at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[TStateMachine] (TStateMachine& stateMachine) [0x00000] in

I am using Unity Version: 6000.0.58f2
Reown AppKit Unity: Tried v1.5.0, v1.5.1 and v1.5.2

Android (IL2CPP) works 100% perfectly with the exact same project, code and settings.
What I have already tried :

• Official package com.reown.appkit.unity versions 1.5.0, 1.5.1, 1.5.2
• Full nuclear clean (deleted Library/, Temp/, obj/, PackageCache/, packages-lock.json) multiple times
• Player Settings (iOS):
  • Managed Stripping Level = Low
  • IL2CPP Code Generation = Optimize for runtime speed
  • Strip Engine Code = OFF
• Extremely comprehensive link.xml preserving Newtonsoft.Json (including specific methods), all Reown.*, System.Reflection, System.Collections.Concurrent, etc.
• Delayed Reown init with Task.Delay()

Any working configuration would be hugely appreciated!

Thank you!

[linear]

APKTN-689

[skibitsky]

Hello @keshavgame,

Thank you for opening the issue. Have you tried setting Managed Code Stripping Level to Minimal?

[keshavgame]

Hello @keshavgame,

Thank you for opening the issue. Have you tried setting Managed Code Stripping Level to Minimal?

Yes, I have tried setting managedStrippingLevel to Minimal as well as Low, but result is the same.

[skibitsky]

I'm unable to reproduce the issue with our Sample project. We also haven't received any reports from other customers about iOS not working.

The only requirement we have for IL2CPP is to set the Managed Code Stripping Level to Minimal. Since that isn't working for you, it may be a Unity issue. Could you please delete the Library folder and all iOS build artifacts, set the stripping level to Minimal, and attempt to create a fresh iOS build? If that still doesn't work, I would appreciate it if you could share your project or try to isolate the issue in a new project so I can take a look 🙏

[ELMXDevTeam]

I have the same issue, the build is working fine on Android but gives me Newtonsoft.Json.Serialization error on ReownKit initialization call on IOS build through XCode. I set the

Scripting Backend: IL2CPP
API Compatibility Level: .NET Standard 2.1
Managed Stripping Level: Minimal
Strip Engine Code: UNCHECKED
Optimize Mesh Data: UNCHECKED
Script Call Optimization: Slow and Safe
IL2CPP Code Generation: Optimize for Code size and build time

Also added the Link.xml to preserve(avoid stripping) NewtonSoft and others file.

In my project i have a lot of 3rd party sdks like Firebase, IAP, Analytics etc.

Online AI engines suggested me that i may have multiple NewtonSoft Libraries that are conflicting, i have checked in detail but couldn't find.

Also, when i build the sample demo scenes of REOWN in an empty project[IOS] they work fine but when i build the same scenes after importing in my GameProject[IOS], even they don't work.
Also i was using "Linear" Color Space in my game, So to test i changed the default "Gamma" of sample working project of Reown to linear, and it worked as well.

[skibitsky]

@ELMXDevTeam, could you try reproducing this issue in a new project or a copy of our sample? If it works, you might import the packages and libraries one by one (or in batches) from your game to identify the one causing the issue. It's hard for me to provide any advice since our sample works very well with iOS and different versions of Unity.

Additionally, could you share your Unity and Xcode versions, the exact error you're getting, as well as the packages-lock.json file?

[keshavgame]

Hi @skibitsky

I have removed all my game code and game functionalities from code and here is unity code.
Code download link : https://transfer.it/t/sQDHqSwVzTxA

FYI, I am using multiple third party SDKs in my code so those are not removed.

Please share your feedback once you try this or need more details.

Thanks!

[ELMXDevTeam]

@ELMXDevTeam, could you try reproducing this issue in a new project or a copy of our sample? If it works, you might import the packages and libraries one by one (or in batches) from your game to identify the one causing the issue. It's hard for me to provide any advice since our sample works very well with iOS and different versions of Unity.

Additionally, could you share your Unity and Xcode versions, the exact error you're getting, as well as the packages-lock.json file?

Yes I am doing Exactly like this, importing plugins one by one in a working project to find the colliding entity.

Below is my packages-lock.json.

packages-lock.json

[skibitsky]

Hey @keshavgame @ELMXDevTeam, could you please ensure you have the latest Firebase packages and that there are no legacy DLLs or scripts? I believe the project @keshavgame shared with me contains very old DLLs that are several years outdated. However, I haven't had the opportunity to check if Google has released newer versions.

[keshavgame]

Hey @keshavgame @ELMXDevTeam, could you please ensure you have the latest Firebase packages and that there are no legacy DLLs or scripts? I believe the project @keshavgame shared with me contains very old DLLs that are several years outdated. However, I haven't had the opportunity to check if Google has released newer versions.

Hi @skibitsky

I understand the project is very old but all the third party SDKs that I am using is upgraded with latest one.