Stay organized with collections
Save and categorize content based on your preferences.
Migrate to Kotlin 2.0
If you are using the Consumer SDK for Android 3.0+ you must upgrade to Kotlin
2.0. This page provides guidance to ease the transition to the new Kotlin
version.
Consumer SDK v3 and below does not support Full R8 mode. You must explicitly
disable Full R8 mode if your application targets AGP 8.0+.
#settings.gradleandroid.enableR8.fullMode=false
Kotlin version compatibility
Kotlin supports backwards compatibility with three previous language
versions.
This means that if you are already using Kotlin 1.7+ with the Consumer SDK, you
should be able to upgrade to Kotlin 2.0 without having to resolve all of the
breaking changes. However, Kotlin compatibility only applies to stable language
features.
If you are using alpha, beta or experimental features in the Kotlin language,
then you may have to make additional changes when upgrading.
This flag reverts breaking changes to the behavior of a previous Kotlin version.
For example, if you are using Kotlin 1.7, you could specify [ -
language-version 1.7] and the new breaking changes would no longer take effect:
android{kotlinOptions{languageVersion='1.7'}}
api-version X.Y
This flag prevents new APIs from being used before dependent downstream code is
ready to incorporate Kotlin 2.0.
android{kotlinOptions{apiVersion='1.7'}}
A more targeted approach
In addition to using Kotlin compatibility flags, we recommend reviewing the
Kotlin release notes and choosing the behaviors that you would like to retain
from the version that you are upgrading from. Kotlin provides a list of breaking
changes and the flags that can be set to retain the original behavior in its
compatibility guides for each version:
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[[["\u003cp\u003eUpgrading to Kotlin 2.0 is mandatory when utilizing the Consumer SDK for Android 3.0 or later.\u003c/p\u003e\n"],["\u003cp\u003eEnsure your Gradle and Android Gradle Plugin (AGP) versions meet the compatibility requirements for Kotlin 2.0, with Consumer SDK 3.0+ necessitating AGP 7.3 or higher.\u003c/p\u003e\n"],["\u003cp\u003eDisable Full R8 mode explicitly for Consumer SDK v3 and below when targeting AGP 8.0+.\u003c/p\u003e\n"],["\u003cp\u003eWhile Kotlin generally offers backward compatibility, potential breaking changes might require adjustments, especially when using alpha, beta, or experimental Kotlin features.\u003c/p\u003e\n"],["\u003cp\u003eLeverage Kotlin compatibility flags like \u003ccode\u003elanguage-version\u003c/code\u003e and \u003ccode\u003eapi-version\u003c/code\u003e or consult the Kotlin compatibility guides for managing specific breaking changes during the upgrade.\u003c/p\u003e\n"]]],["To migrate to Kotlin 2.0 with Consumer SDK 3.0+, ensure your Gradle and AGP versions meet Kotlin 2.0 requirements (AGP 7.3+). Disable Full R8 mode if using AGP 8.0+ by setting `android.enableR8.fullMode=false` in `settings.gradle`. Utilize Kotlin compatibility flags, `languageVersion` and `apiVersion`, to revert breaking changes or limit new API usage. Consult the Kotlin compatibility guides for specific version changes and behavior flags.\n"],null,["Migrate to Kotlin 2.0\n\nIf you are using the Consumer SDK for Android 3.0+ you must upgrade to Kotlin\n2.0. This page provides guidance to ease the transition to the new Kotlin\nversion.\n| **Note:** For information on upgrading to Kotlin 1.9, which was required for the Consumer SDK 5.0+ see the [Kotlin 1.9 upgrade\n| guide](/maps/documentation/transportation-logistics/on-demand-rides-deliveries-solution/trip-order-progress/migrations/android_consumer_sdk_v2.0_migration#kotlin_16_to_19_migration).\n\nGradle and AGP compatibility\n\nKotlin 2.0 has [requirements for the minimum and maximum\nversions](https://kotlinlang.org/docs/gradle-configure-project.html#apply-the-plugin)\nfor your Gradle and Android Gradle Plugin (AGP) version. Ensure that your\nproject meets these requirements for Kotlin 2.0.\n\nAGP minimum version for the Consumer SDK 3.0+\n\nConsumer SDK 3.0 requires using AGP 7.3+.\n\nFull R8 mode\n\nConsumer SDK v3 and below does not support Full R8 mode. You must explicitly\ndisable Full R8 mode if your application targets AGP 8.0+. \n\n # settings.gradle\n android.enableR8.fullMode=false\n\nKotlin version compatibility\n\nKotlin supports backwards compatibility with [three previous language\nversions](https://kotlinlang.org/docs/kotlin-evolution-principles.html#compatibility-options).\nThis means that if you are already using Kotlin 1.7+ with the Consumer SDK, you\nshould be able to upgrade to Kotlin 2.0 without having to resolve all of the\nbreaking changes. However, [Kotlin compatibility only applies to stable language\nfeatures](https://kotlinlang.org/docs/components-stability.html#stability-levels-explained).\nIf you are using alpha, beta or experimental features in the Kotlin language,\nthen you may have to make additional changes when upgrading.\n\nKotlin compatibility flags\n\nAs noted in the previous section, Kotlin supports up to 3 previous versions of\nthe language when upgrading. Kotlin [supplies two flags to help with limiting\nbreaking changes](https://kotlinlang.org/docs/compatibility-modes.html):\n\nlanguage-version X.Y\n\nThis flag reverts breaking changes to the behavior of a previous Kotlin version.\nFor example, if you are using Kotlin 1.7, you could specify `[ -\nlanguage-version 1.7]` and the new breaking changes would no longer take effect: \n\n android {\n kotlinOptions {\n languageVersion = '1.7'\n }\n }\n\napi-version X.Y\n\nThis flag prevents new APIs from being used before dependent downstream code is\nready to incorporate Kotlin 2.0. \n\n android {\n kotlinOptions {\n apiVersion = '1.7'\n }\n }\n\nA more targeted approach\n\nIn addition to using Kotlin compatibility flags, we recommend reviewing the\nKotlin release notes and choosing the behaviors that you would like to retain\nfrom the version that you are upgrading from. Kotlin provides a list of breaking\nchanges and the flags that can be set to retain the original behavior in its\ncompatibility guides for each version:\n\n- [1.8 compatibility guide](https://kotlinlang.org/docs/compatibility-guide-18.html)\n- [1.9 compatibility guide](https://kotlinlang.org/docs/compatibility-guide-19.html)\n- [2.0 compatibility guide](https://kotlinlang.org/docs/compatibility-guide-20.html)"]]
