Integration Unity as a library in native Android app

There is a problem with this example: the unload buttons actually quit the app instead of just destroying the activity. (tested on Android 5.1, API level 22)

 

We have observed that when the UnityPlayerActivity hosting the UnityPlayer object is destroyed, the UnityPlayer calls Process.killProcess(myPid) as part of it's destroy() method. This causes our application to crash and restart since UnityPlayerActivity shares the same process as the application. Is there workaround for this behavior? We do not want to run the the UnityPlayerActivity as a separate process since makes integration with our application much more complicated. Can Unity add support for both types of activities? This would make the Unity library feature much more usable by a wide variety of Android applications, which we believe is the goal of this feature.

 

We have filed a bug report for the Unity Player crashing when performing 'Unload' in the NativeApp since the UnityPlayerActivity calls Process.killProcess instead of exiting cleanly: Case 1163573

 

Tried this out right now and it seems to work great!
One weird thing I noticed... I see two "NativeApp" apps installed on my test android device when I build / deploy the NativeApp project from AndroidStudio.

When I tap on one of them, it launches the Native app correctly and I can go back and forth between Unity and the Android view. But if I launch the other NativeApp app, it launches me straight into the Unity view (i.e. with the spinning cube) and skips the whole Native app layer (obviously, I don't see the native buttons in the middle as well). If I click on the Unity button to take me back to the MainView, I get a NullReference in showHostMainWindow probably beacuse the Main View does not even exist.

Dev / Test environment: Pixel 2 XL running Android 9 pie. I think I built both the UnityLibrary and the NativeApp using SDK API 28 (Pie). Not sure if this is related but when I tried to do the Gradle sync, after modifying the gradle scripts, it complained that the minSDK version of the NativeApp project was 16 while the minSDK version of the UnityLibrary was 19. So, I changed the NativeApp minSDK value to 19 to get it to build / deploy

Did I mess something up? Or is it expected that two apps get installed on the device, one native app and another the UnityLibrary?

 

Hi,

nice to see such a feature coming with Unity. Also a very nice and detailed explanation, thanks for that.
However I wanted to mention that I had to add a string to my strings.xml with name game_view_content_description in order to get it running.
If the string was not defined the UnityActivity crashed when starting it.

Thought I leave it here in case someone faces the same issue.

 

It got me too - hopefully this is in big, bold letters in the documentation. ;P

 

Any plans to add iOS support in the same way?

 

@robin_notts
I didn't try yet but iOS should already be supported, see https://forum.unity.com/threads/integration-unity-as-a-library-in-native-ios-app.685219/

 

Thanks for this integration.

To make it work on my own project, I needed in addition to add

<string name="game_view_content_description">Game view</string>

to my app's strings.xml file

and

Code (CSharp):

1. defaultConfig {
2.         ndk {
3.             abiFilters 'armeabi-v7a', 'x86'
4.         }
5.     }

to my app build.gradle file.
Otherwise, the app crashed with following error :

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.mycompany.myapp/com.unity3d.player.UnityPlayerActivity}: android.content.res.Resources$NotFoundException: String resource ID #0x0

 

Not sure if this is the place to ask, but where could I find more information about combining this with AR Foundation? (supposedly one of the use-cases of Unity as a library). I managed to put my own game into the example app provided here without encountering any problems, but I'm now trying to put the AR example explained here: https://www.youtube.com/embed/ml9qVRdEH4k into the android app and I'm encountering the following error:

ERROR: Unable to resolve dependency for ':unityLibrary@debug/compileClasspath': Could not find :arcore_client:

Can anyone here give me any guidance on how to fix this, or what to google?

EDIT:

I managed to resolve the error by changing:
The dependencies in unityLibrary's build.gradle to

Code (CSharp):

1. dependencies {
2.     implementation fileTree(dir: 'libs', include: ['*.jar'])
3.     compile files('libs/arcore_client.aar')
4.     compile files('libs/unityandroidpermissions.aar')
5.     compile files('libs/UnityARCore.aar')
6. }

Now it compiles can open the app, but crashes on pressing the show unity button with the following error

No implementation found for void com.unity3d.player.UnityPlayer.nativeRestartActivityIndicator() (tried Java_com_unity3d_player_UnityPlayer_nativeRestartActivityIndicator and Java_com_unity3d_player_UnityPlayer_nativeRestartActivityIndicator__)

EDIT:

Switching to IL2CCP, and turning off Instant Run in Android Studio resolves all error and lets me use launch the AR Core example, very nice.

 

I only want to use Audio of Unity in Delphi. Will it be possible with Unity 2019.3a2 to compile a library that I can use in an Android project for Delphi? And IOS? And which banner of Unity will I have to include with the Community edition?

 

Hi, I tested the example project and it worked correctly.

Now I'm testing a Unity project with Vuforia exported as an Android Library, and I can't make it work.

When I launch it from an Android Project it crashes.

2019-07-31 12:10:53.171 17975-17975/com.unity.mynativeapp E/Unity: Unable to find main

2019-07-31 12:10:53.209 17975-17975/com.unity.mynativeapp I/HwPointEventFilter: do not support AFT because of no config

2019-07-31 12:10:53.226 17975-17975/com.unity.mynativeapp E/art: No implementation found for void com.unity3d.player.UnityPlayer.nativeRestartActivityIndicator() (tried Java_com_unity3d_player_UnityPlayer_nativeRestartActivityIndicator and Java_com_unity3d_player_UnityPlayer_nativeRestartActivityIndicator__)

2019-07-31 12:10:53.228 17975-17975/com.unity.mynativeapp E/AndroidRuntime: FATAL EXCEPTION: main

    Process: com.unity.mynativeapp, PID: 17975

Has anyone tried to use a Vuforia Project as a Library?, if so what's missing?

Thanks.

 

I am working with XCode. Can you provide an example for this, please?

 

Can you provide an example for Unity Integration with Swift?

 

ERROR: Unable to resolve dependency for ':unityLibrary@debug/compileClasspath': Could not find :android_component:.
Show Details
Affected Modules: unityLibrary


ERROR: Failed to resolve: :core-1.1.0:
Affected Modules: unityLibrary


ERROR: Unable to resolve dependency for ':unityLibrary@debug/compileClasspath': Could not find :unity_android_bridge:.
Show Details
Affected Modules: unityLibrary


ERROR: Unable to resolve dependency for ':unityLibrary@debugAndroidTest/compileClasspath': Could not find :android_component:.
Show Details
Affected Modules: unityLibrary


ERROR: Unable to resolve dependency for ':unityLibrary@debugAndroidTest/compileClasspath': Could not find :unity_android_bridge:.
Show Details
Affected Modules: unityLibrary


ERROR: Unable to resolve dependency for ':unityLibrary@debugUnitTest/compileClasspath': Could not find :android_component:.
Show Details
Affected Modules: unityLibrary


ERROR: Unable to resolve dependency for ':unityLibrary@debugUnitTest/compileClasspath': Could not find :unity_android_bridge:.
Show Details
Affected Modules: unityLibrary


ERROR: The minSdk version should not be declared in the android manifest file. You can move the version from the manifest to the defaultConfig in the build.gradle file.
Remove minSdkVersion and sync project
Affected Modules: unityLibrary


WARNING: The targetSdk version should not be declared in the android manifest file. You can move the version from the manifest to the defaultConfig in the build.gradle file.
Remove targetSdkVersion and sync project
Affected Modules: unityLibrary


I got this errror while adding my game scene

 

For me, the problem occurred while integrated the AR Camera(Wikitude)

 

Tried using Wikitude not working

 

I am getting this error while integrating Wikitude camera.
Please help me to solve this error


ERROR: Unable to resolve dependency for ':unityLibrary@debug/compileClasspath': Could not find :android_component:.
Show Details
Affected Modules: unityLibrary


ERROR: Failed to resolve: :core-1.1.0:
Affected Modules: unityLibrary


ERROR: Unable to resolve dependency for ':unityLibrary@debug/compileClasspath': Could not find :unity_android_bridge:.
Show Details
Affected Modules: unityLibrary

 

Hey, how's it going!

Trying to build the project using il2cpp. Hoping to build it in ARM64.

I'm getting a clang linker error both when building the project normally and when exporting the project:

Code (CSharp):

1. Failed running D:\Program Files\Unity Editors\2019.3.0a11\Editor\Data\il2cpp/build/il2cpp.exe --convert-to-cpp --emit-null-checks --enable-array-bounds-check --dotnetprofile="unityaot" --compile-cpp --libil2cpp-static --platform="Android" --architecture="ARMv7" --configuration="Release" --outputpath="D:\Users\TylerOBrien\Downloads\UnityProject\UnityProject\Temp\StagingArea\assets\bin\Data\Native\armeabi-v7a\libil2cpp.so" --cachedirectory="D:\Users\TylerOBrien\Downloads\UnityProject\UnityProject\Assets\..\Library\il2cpp_android_armeabi-v7a/il2cpp_cache" --additional-include-directories="D:/Program Files/Unity Editors/2019.3.0a11/Editor/Data/PlaybackEngines/AndroidPlayer/Tools\bdwgc/include" --additional-include-directories="D:/Program Files/Unity Editors/2019.3.0a11/Editor/Data/PlaybackEngines/AndroidPlayer/Tools\libil2cpp/include" --tool-chain-path="D:/Program Files/Unity Editors/2019.3.0a11/Editor/Data/PlaybackEngines/AndroidPlayer/NDK" --profiler-report --map-file-parser="D:/Program Files/Unity Editors/2019.3.0a11/Editor/Data/Tools/MapFileParser/MapFileParser.exe" --directory=D:/Users/TylerOBrien/Downloads/UnityProject/UnityProject/Temp/StagingArea/assets/bin/Data/Managed --generatedcppdir=D:/Users/TylerOBrien/Downloads/UnityProject/UnityProject/Temp/StagingArea/Il2Cpp/il2cppOutput
2.  
3. stdout:
4. Building libil2cpp.so with AndroidToolChain
5.     Output directory: D:\Users\TylerOBrien\Downloads\UnityProject\UnityProject\Temp\StagingArea\assets\bin\Data\Native\armeabi-v7a
6.     Cache directory: D:\Users\TylerOBrien\Downloads\UnityProject\UnityProject\Library\il2cpp_android_armeabi-v7a\il2cpp_cache
7. ObjectFiles: 132 of which compiled: 0
8. Total compilation time: 79 milliseconds.
9. il2cpp.exe didn't catch exception: Unity.IL2CPP.Building.BuilderFailedException: D:\Program Files\Unity Editors\2019.3.0a11\Editor\Data\PlaybackEngines\AndroidPlayer\NDK\toolchains\llvm\prebuilt\windows-x86_64\bin\clang++ @"C:\Users\tyler\AppData\Local\Temp\tmpF98D.tmp" -o "D:\Users\TylerOBrien\Downloads\UnityProject\UnityProject\Library\il2cpp_android_armeabi-v7a\il2cpp_cache\linkresult_2256FF963E93D278D258DA3E8A9F404D\libil2cpp.so" -shared -Wl,-soname,libil2cpp.so -Wl,--no-undefined -Wl,-z,noexecstack -Wl,--gc-sections -Wl,--build-id --sysroot "D:\Program Files\Unity Editors\2019.3.0a11\Editor\Data\PlaybackEngines\AndroidPlayer\NDK\platforms\android-19\arch-arm" -gcc-toolchain "D:\Program Files\Unity Editors\2019.3.0a11\Editor\Data\PlaybackEngines\AndroidPlayer\NDK\toolchains\arm-linux-androideabi-4.9\prebuilt\windows-x86_64" -target armv7-none-linux-androideabi -Wl,--wrap,sigaction -nostdlib++ -L "D:\Program Files\Unity Editors\2019.3.0a11\Editor\Data\PlaybackEngines\AndroidPlayer\NDK\sources\cxx-stl\llvm-libc++\libs\armeabi-v7a" -lc++_static -lc++abi -landroid_support -lunwind -latomic -llog -rdynamic -fuse-ld=bfd.exe
10.  
11. D:/Users/TylerOBrien/Downloads/UnityProject/UnityProject/Library/il2cpp_android_armeabi-v7a/il2cpp_cache/8303688318A74DF748FF32B5F88E6CAE.o: In function `NativeAPI_showHostMainWindow_m9D8062DCC54A7E64E4F087FCACBE68872F8D1497':
12. D:\Users\TylerOBrien\Downloads\UnityProject\UnityProject\Temp\StagingArea\Il2Cpp\il2cppOutput/Assembly-CSharp.cpp:1672: undefined reference to `showHostMainWindow'
13. clang++.exe: error: linker command failed with exit code 1 (use -v to see invocation)
14.  
15.  
16.   at Unity.IL2CPP.Building.CppProgramBuilder.PostprocessObjectFiles(HashSet`1 objectFiles, CppToolChainContext toolChainContext)
17.   at Unity.IL2CPP.Building.CppProgramBuilder.Build(IBuildStatistics& statistics)
18.   at il2cpp.Program.DoRun(String[] args)
19.   at il2cpp.Program.Run(String[] args)
20.   at il2cpp.Program.Main(String[] args)
21. stderr:
22.  
23. Unhandled Exception: Unity.IL2CPP.Building.BuilderFailedException: D:\Program Files\Unity Editors\2019.3.0a11\Editor\Data\PlaybackEngines\AndroidPlayer\NDK\toolchains\llvm\prebuilt\windows-x86_64\bin\clang++ @"C:\Users\tyler\AppData\Local\Temp\tmpF98D.tmp" -o "D:\Users\TylerOBrien\Downloads\UnityProject\UnityProject\Library\il2cpp_android_armeabi-v7a\il2cpp_cache\linkresult_2256FF963E93D278D258DA3E8A9F404D\libil2cpp.so" -shared -Wl,-soname,libil2cpp.so -Wl,--no-undefined -Wl,-z,noexecstack -Wl,--gc-sections -Wl,--build-id --sysroot "D:\Program Files\Unity Editors\2019.3.0a11\Editor\Data\PlaybackEngines\AndroidPlayer\NDK\platforms\android-19\arch-arm" -gcc-toolchain "D:\Program Files\Unity Editors\2019.3.0a11\Editor\Data\PlaybackEngines\AndroidPlayer\NDK\toolchains\arm-linux-androideabi-4.9\prebuilt\windows-x86_64" -target armv7-none-linux-androideabi -Wl,--wrap,sigaction -nostdlib++ -L "D:\Program Files\Unity Editors\2019.3.0a11\Editor\Data\PlaybackEngines\AndroidPlayer\NDK\sources\cxx-stl\llvm-libc++\libs\armeabi-v7a" -lc++_static -lc++abi -landroid_support -lunwind -latomic -llog -rdynamic -fuse-ld=bfd.exe
24.  
25. D:/Users/TylerOBrien/Downloads/UnityProject/UnityProject/Library/il2cpp_android_armeabi-v7a/il2cpp_cache/8303688318A74DF748FF32B5F88E6CAE.o: In function `NativeAPI_showHostMainWindow_m9D8062DCC54A7E64E4F087FCACBE68872F8D1497':
26. D:\Users\TylerOBrien\Downloads\UnityProject\UnityProject\Temp\StagingArea\Il2Cpp\il2cppOutput/Assembly-CSharp.cpp:1672: undefined reference to `showHostMainWindow'
27. clang++.exe: error: linker command failed with exit code 1 (use -v to see invocation)
28.  
29.  
30.   at Unity.IL2CPP.Building.CppProgramBuilder.PostprocessObjectFiles(HashSet`1 objectFiles, CppToolChainContext toolChainContext)
31.   at Unity.IL2CPP.Building.CppProgramBuilder.Build(IBuildStatistics& statistics)
32.   at il2cpp.Program.DoRun(String[] args)
33.   at il2cpp.Program.Run(String[] args)
34.   at il2cpp.Program.Main(String[] args)
35.  
36. UnityEngine.Debug:LogError(Object)
37. UnityEditorInternal.Runner:RunProgram(Program, String, String, String, CompilerOutputParserBase)
38. UnityEditorInternal.Runner:RunManagedProgram(String, String, String, CompilerOutputParserBase, Action`1)
39. UnityEditorInternal.IL2CPPBuilder:RunIl2CppWithArguments(List`1, Action`1, String)
40. UnityEditorInternal.IL2CPPBuilder:ConvertPlayerDlltoCpp(Il2CppBuildPipelineData, String, String, Boolean)
41. UnityEditorInternal.IL2CPPBuilder:Run()
42. UnityEditorInternal.IL2CPPUtils:RunIl2Cpp(String, String, IIl2CppPlatformProvider, Action`1, RuntimeClassRegistry)
43. UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
44.  

 

I filed a bug report with the project: fogbugz.unity3d.com/default.asp?1174809_ebr3sj4eac6ar72r.

 

Fresh project on MacOS High Sierra and hitting

Invalid build path

with

UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)

Note: iOS plugin works flawless. Have never run into this issue before. I'm building with the unchange Unity project provided. Similar thread without resolution: https://forum.unity.com/threads/unityengine-guiutility-processevent-int32-intptr.514797/

Update: I'm able to export to an external drive, but still interested in why my main drive doesn't support the export (I've tried exporting to many locations, including the top level "/"). Permissions _shouldn't_ be a problem since I've never had trouble with Unity writing to my drive before. Perhaps it's a case-sensitivity issue? Using Apple's apfs as the filesystem type.

 

The problem is in the Cube.cs script. Comment out the contents of the NativeAPI class when building to Android:

//[DllImport("__Internal")]
//public static extern void showHostMainWindow(string lastStringColor);

Better yet, pop some compile guards around it for IOS only. (See further down in the same script for an example of how to do the compile guard for iOS)

 

EDIT:

Switching to IL2CCP, and turning off Instant Run in Android Studio resolves all error and lets me use launch the AR Core example, very nice.[/QUOTE]

----------------
Hello @aStrangeLoop ,

Would you be able to share your working ARCore/Unity/NativeAndroid project? I am still getting the "No implementation found for void com.unity3d.player.UnityPlayer.nativeRestartActivityIndicator()" error even after switching to IL2CPP and turning off Instatnt Run

 

Not able to use Firebase in unity project. when exporting and syncing getting the following error.

ERROR: Project with path 'Firebase' could not be found in project ':unityLibrary'.


unity exported project structure

 

Has anyone been able to deploy an arm64-v8a to Google Play, without getting an error message using Unity as a library? I'm struggling apart from this critical issue, it's been working fine for me.

 

@SpencerIO

Sorry for the delayed response, was on holiday.
Here is an example of a working project (note that if you re-export the unity project, you'll have to re-do the changes to the unity's project build.gradle*) https://morkvd.stackstorage.com/s/PZ7xpobuctmPOH1

*change the build.gradle to this:

Code (csharp):

1.    
2. dependencies {
3.         implementation fileTree(dir: 'libs', include: ['*.jar'])
4.         compile files('libs/arcore_client.aar')
5.         compile files('libs/unityandroidpermissions.aar')
6.         compile files('libs/UnityARCore.aar')
7.     }
8.  

I hope this helps you in any way.

 

Hi @aStrangeLoop ,

Thank you for trying to help me. Correct me if I'm wrong but the download looks a little platformer game rather and an ARCore app?

 

Ooh sorry I shared the wrong file , Here is the correct files: https://morkvd.stackstorage.com/s/0LXjOtrZkcpfJOy it's was created in 2019.3.0a7 on windows. the AR targets are somewhere in the asset folder. I haven't touched it since before my summer break, beginning last month, so the particulars are kinda hazy, I hope it helps you.

EDIT: ooh i noticed I used the android-ndk-r19 instead of the default one? not sure why I did it but it might be the reason I got it working.

 

@aStrangeLoop this is great! I was banging my head around not being able to get ARCore to work as embedded. Thanks for sharing!

Cheers

 

Doesn't work on my Mac when identical process works on the PC, any ideas? It crashes when I click show Unity.

 

@aStrangeLoop Awesome! thank you! Works published from my Macbook Pro

 

Hi ,by anychance you able to figure out the issue?

 

Hi @PavelLU , let us assume if i already have a firebase(crashlytics) sdk integrated in my android native module.Now i have Unity game as a library integrated inside android native.In this case how would firebase crashlytics work? will firebase crashlytics report crashes of my unity game with proper stacktrace to my dashboard?will firebase behave same like it behaves when i integrate inside unity stand alone android application?FYI i must have crashlytics in both my android native module and in unity game aswell.Thanks

 

I'm using a single activity/multiple fragment navigation based on Android Jetpack and I want to use unity as a lib only in one fragment. It works almost as expected but my problem happens when I navigate from the unity fragment into another fragment and back from this other fragment to the unity fragment. Apparently, reloading the unity player is not possible. What should be done to allow this kind of navigation ? There was already discussions about this issue like this one https://forum.unity.com/threads/crash-with-back-button.605983/ but with unity as a library is there a better solution to address this issue ?

 

in you settings.gradle file. try to update path for firebase folder like below:

Code (JavaScript):

1. include ':app' , ':unityLibrary', ':unityLibrary:Firebase'
2. project(':unityLibrary').projectDir=new File('..\\UnityProject\\androidBuild\\unityLibrary')
3. project(':unityLibrary:Firebase').projectDir=new File('..\\UnityProject\\androidBuild\\unityLibrary\\Firebase')

 

I am Using Unity 2919.3.0b4
1) Class generated by Unity 2) Second class generated by Unity

3) Try to extend class in second step
4) Got error error: cannot access IUnityPlayerLifecycleEvents
class file for com.unity3d.player.IUnityPlayerLifecycleEvents not found

When I build with 2019.3.0a3 there is no IUnityPlayerLifecicleEvents and I can acsess Override

 

crashed on show unity
error :
2019-09-25 12:46:42.853 24961-24961/? E/Unity: Failed to load 'libmain.so', the application will terminate.
2019-09-25 12:46:42.854 24961-24961/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.unity.mynativeapp, PID: 24961
java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/base.apk", zip file "/data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_dependencies_apk.apk", zip file "/data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_resources_apk.apk", zip file "/data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_0_apk.apk", zip file "/data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_1_apk.apk", zip file "/data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_2_apk.apk", zip file "/data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_3_apk.apk", zip file "/data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_4_apk.apk", zip file "/data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_5_apk.apk", zip file "/data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_6_apk.apk", zip file "/data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_7_apk.apk", zip file "/data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_8_apk.apk", zip file "/data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/lib/arm64, /data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/base.apk!/lib/arm64-v8a, /data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_dependencies_apk.apk!/lib/arm64-v8a, /data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_resources_apk.apk!/lib/arm64-v8a, /data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_0_apk.apk!/lib/arm64-v8a, /data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_1_apk.apk!/lib/arm64-v8a, /data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_2_apk.apk!/lib/arm64-v8a, /data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_3_apk.apk!/lib/arm64-v8a, /data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_4_apk.apk!/lib/arm64-v8a, /data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_5_apk.apk!/lib/arm64-v8a, /data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_6_apk.apk!/lib/arm64-v8a, /data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_7_apk.apk!/lib/arm64-v8a, /data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_8_apk.apk!/lib/arm64-v8a, /data/app/com.unity.mynativeapp-n1OBL9UvJYapvNwaCRkAyQ==/split_lib_slice_9_apk.apk!/lib/arm64-v8a, /system/lib64]]] couldn't find "libmain.so"
at java.lang.Runtime.loadLibrary0(Runtime.java:1012)
at java.lang.System.loadLibrary(System.java:1669)
at com.unity3d.player.UnityPlayer.<clinit>(Unknown Source:13)
at com.unity3d.player.UnityPlayerActivity.onCreate(UnityPlayerActivity.java:40)
at com.company.product.OverrideUnityActivity.onCreate(OverrideUnityActivity.java:20)
at com.unity.mynativeapp.MainUnityActivity.onCreate(MainUnityActivity.java:14)
at android.app.Activity.performCreate(Activity.java:7326)
at android.app.Activity.performCreate(Activity.java:7317)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3072)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3235)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1926)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:214)
2019-09-25 12:46:42.859 3275-19470/? W/ActivityManager: crash : com.unity.mynativeapp,0

 

@xxxDOSxxx

I had the same problem when updating to 2019.3b. I think the solution is to add

Code (CSharp):

1. implementation fileTree(dir: project(':unityLibrary').getProjectDir().toString() + ('\\libs'), include: ['*.jar'])

to the dependencies of the app's gradle file, as described in the second version of the tutorial.