Mapbox-navigation-android: Fatal Exception: java.lang.IllegalAccessError when proguarded (R8)

[hrach]

Method 'java.lang.String c.e.c.a.a()' is inaccessible to class 'c.e.b.a.a.e' (declaration of 'c.e.b.a.a.e' appears in /XXX-Fa8I9XMskRAXduIQ2mvFCg==/base.apk

Android API: 29
Mapbox Navigation SDK version: 0.33.2

Steps to trigger behavior

1. Proguard app with R8 (1.4.77)
2. Run a directions fetch

Expected behavior

No crash.

Actual behavior

Fatal Exception: java.lang.IllegalAccessError
Method 'java.lang.String c.e.c.a.a()' is inaccessible to class 'c.e.b.a.a.e' (declaration of 'c.e.b.a.a.e' appears in /XXX-Fa8I9XMskRAXduIQ2mvFCg==/base.apk)
com.mapbox.api.directions.v5.DirectionsResponseFactory.generateRouteOptions (DirectionsResponseFactory.java:75)
com.mapbox.api.directions.v5.DirectionsResponseFactory.a (DirectionsResponseFactory.java:28)
com.mapbox.api.directions.v5.MapboxDirections$1.onResponse (MapboxDirections.java:128)
retrofit2.ExecutorCallAdapterFactory$ExecutorCallbackCall$1$1.run (ExecutorCallAdapterFactory.java:71)
android.os.Handler.handleCallback (Handler.java:873)

[danesfeder]

Thanks for the report @hrach. We will look into this and report back. From first glance, it looks like a possible issue in our upstream Java SDK. Will move the ticket there if we deem this is the case.

cc @osana

[hrach]

Thanks, I'm not sure it I can somehow mitigate this with additional rule, so if there is a way, I would be glad to know :)

[supersonixxx]

i have the same problem

[pmsferreira]

Here it is a little bit strange... when running in a device by android studio works just fine... then I generate an apk and copy to my phone and it crashes, but in a friend's pocophone it also crashes but I can see an error details.

In my phone only crashes without error message, so i can't figured out what it is the problem

[JPSiller]

This works with proguard without R8 (same rules). Is this an issue in the mapbox side or r8 itself?

[freszu]

Came across same problem.
This seems like a bug in R8 i did some investigation and actually ended up opening an issue on R8 tracker 🙈 lets see what they say : https://issuetracker.google.com/issues/136195382

Until it's resolved i have reverted to using proguard

[freszu]

Issue was confirmed as a bug in R8 shrinker and received a fix - we will need to wait till its listed in new build tools release or specify r8 version manually until then.

There is also temporary workaround including adding new proguard rule:

-keep class com.mapbox.api.directions.v5.MapboxDirections { protected <methods>; }

cc @danesfeder

[hrach]

Closing. Fix is on the way and workaround is possible ^^^.

[schmem55]

any news?