A practical guide to migrating your Android app from Java Time to Kotlin Time — cleaner syntax, multiplatform support, fewer pitfalls.

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Migrating from Java Time API to Kotlin Time in Android apps offers cleaner syntax, multiplatform support, and JDK version independence. The migration involves replacing similar classes like Instant, Duration, and LocalDateTime incrementally using compatibility APIs (toKotlin*/toJava*). Key differences include Kotlin Time's intentional separation of instant time from local time, eliminating OffsetDateTime and ZonedDateTime to reduce complexity. Use static analysis tools like Detekt's ForbiddenImport rule to track migration progress and prevent new Java Time usage. Most migrations can be straightforward, though some edge cases around date periods and timezone handling require deeper understanding of both APIs.

Migration of Android App from Java Time API to Kotlin Time

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Changes requiring deeper understanding of the Java Time API