java.lang.UnsatisfiedLinkError: No implementation found for int com.google.atap.tango.TangoJNINative.Initialize

[google-ar]

java.lang.UnsatisfiedLinkError: No implementation found for int com.google.atap.tango.TangoJNINative.Initialize

[jguomoto]

Installing arcore_preview.apk should fix this problem. You could find it in the "Prepare Your Device" section: https://developers.google.com/ar/develop/java/getting-started

[yuanzhuohao]

You need to install ARCore Service by arcore-preview.apk

[nathanmartz]

@MarkBennett thank you for the feedback. We will look into updating our devsite to be more clear in this regard.

[mindwing]

I just meet the same situation.
There is no "*.so" file.

[kpbird]

I am having same error in Google Pixel

Here is full error log

I/TangoClientLibLoader: Pure Java path, not loading libtango_client_api.so at all.
E/Tango: Java version of Tango Service not found, falling back to tangoservice_d.
E/zygote64: No implementation found for int com.google.atap.tango.TangoJNINative.Initialize(android.content.Context) (tried Java_c
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.google.ar.core.examples.java.helloar, PID: 18446
java.lang.UnsatisfiedLinkError: No implementation found for int com.google.atap.tango.TangoJNINative.Initialize(
at com.google.atap.tango.TangoJNINative.Initialize(Native Method)
at com.google.atap.tangoservice.Tango.(Tango.java:385)
at com.google.ar.core.TangoWrapper.createInstance(TangoWrapper.java:32)
at com.google.ar.core.Session.bindTangoService(Session.java:425)
at com.google.ar.core.Session.resume(Session.java:153)
at com.google.ar.core.examples.java.helloar.HelloArActivity.onResume(HelloArActivity.java:136)
at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1354)
at android.app.Activity.performResume(Activity.java:7079)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3620)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3685)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2898)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)

                                                   at java.lang.reflect.Method.invoke(Native Method)
                  at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
                  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

[cpinan]

Have you installed arcore.apk?

[MarkBennett]

I'm pretty new to development using adb and didn't realize the the command was installing to my phone. If you know that then obvisouly, this would require connecting the phone but if you don't know what it's doing then you might not have it attached and could miss the error in the adb output.

The directions don't indicate you need to connect your phone until the step after the adb install, so just indicating you need to plug in your phone earlier should help here.

[nathanmartz]

Closing this issue as the original problem has been addressed.

[MarkBennett]

Thanks @nathanmartz!