No implementation found for void com.unity3d.player.UnityPlayer.nativeRestartActivityIndicator()

Question

I'm new to Unity, I'm trying to integrate Unity game(it has ARcore) into the native Android application.

I'm able to launch unity in a new HelloWorld app but unable to launch in my real app(which has other modules).

Note: When I'm building an android library from Unity project, I'm including armeabi-v7a and x86 architectures.

java.lang.UnsatisfiedLinkError: No implementation found for void com.unity3d.player.UnityPlayer.nativeRestartActivityIndicator() (tried Java_com_unity3d_player_UnityPlayer_nativeRestartActivityIndicator and Java_com_unity3d_player_UnityPlayer_nativeRestartActivityIndicator__)
        at com.unity3d.player.UnityPlayer.nativeRestartActivityIndicator(Native Method)
        at com.unity3d.player.UnityPlayer.resume(Unknown Source:37)
        at com.rccl.soakTest.UnityPlayerActivity.onResume(UnityPlayerActivity.java:58)
        at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1361)
        at android.app.Activity.performResume(Activity.java:7344)
        at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3763)
        at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3828)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3036)
        at android.app.ActivityThread.-wrap11(Unknown Source:0)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1696)
        at android.os.Handler.dispatchMessage(Handler.java:105)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6938)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)

Tested on the following Device: SamsungS8 (Oreo), Emulator-Nexus 6(Oreo)

Answer 1

Try enabling ARM64:

1. Update unity to 2018.3
2. In android player settings change "scripting backend" to IL2CPP.
3. In android player settings mark ARM64 checkbox as selected.

Answer 2

Finally I got the reason for that issue,

ISSUE: It is looking for JNI libs (.so) files for ARM-64architecture.

ARCore currently is not extending their support for ARM64 (https://github.com/google-ar/arcore-unity-sdk/issues/201 . -> It was fixed now) and the app is crashing.

My app only supports ARM64 and ARMV7.. When I exclude ARM64 from ABI Filters and SPlits. It works.

Im no more using ARCore due to other issues.