ThreeTen-Backport error on Android - ZoneRulesException: No time-zone data files registered

Question

I\'m using ThreeTen-Backport library for my Android project (because java.time is not yet implemented in android development).

When I write LocalDate today=L

Answer 1

For me, it wasn't working on signed release build with proguard enabled. Check your proguard rules if they contain

-keep class org.threeten.bp.zone.*

unless, add it. It helped for me.