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ServiceConfigurationError in Android

See original GitHub issue

I get this exception every other build…

   java.util.ServiceConfigurationError: Couldn't read jar:file:/data/app/....-1/base.apk!/META-INF/services/org.cache2k.spi.Cache2kCoreProvider
        at java.util.ServiceLoader$ServiceIterator.readClass(ServiceLoader.java:245)
        at java.util.ServiceLoader$ServiceIterator.hasNext(ServiceLoader.java:202)
        at org.cache2k.spi.b.a(SingleProviderResolver.java:106)
        at org.cache2k.spi.b.a(SingleProviderResolver.java:82)
        at org.cache2k.spi.b.b(SingleProviderResolver.java:64)
        at org.cache2k.f.<clinit>(CacheManager.java:54)
        at org.cache2k.c.b(Cache2kBuilder.java:160)

the first build crashes the app with that exception, the second one succeeds. I’m using r8 with the Proguard rules that are on the cache2k.org docs.

Issue Analytics

State:
Created 4 years ago
Comments:7 (4 by maintainers)

Top GitHub Comments

1reaction

cruftexcommented, Feb 3, 2020

Interesting, thanks for the update!

I am still automatically testing with Android 4.1 Jelly Bean (API 16). So theoretically, everything above should work.

There was trouble with Android in the past and its always class loading around the SPI mechanism. SPI is used in cache2k to have the option to ship different implementations for the same API. However, there is only a single implementation right now. Maybe I should remove or simplify that area.

0reactions

cruftexcommented, Aug 14, 2020

Closing. We need to start working on cache2k version 2 and drop support of older Android version anyway. Its unclear whether and how we will support Android anyways in the future, since we don’t have capacity for validation tests at the moment. I opened https://github.com/cache2k/cache2k/issues/143 to further address this.

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