Android Gradle Plugin

Android Gradle plugin 9.4 is a minor release that includes a variety of new features and improvements. Starting with AGP 10, the new Variant API is mandatory for all projects. To support a gradual migration, you can temporarily opt specific modules out of this requirement before AGP 10 by applying the following to your gradle.properties file. android.newDsl.optOut=:example-lib1 Starting in AGP 9.4, the build system checks for strict 1:1 flavor dimension parity between Android app modules and dynamic feature modules, reporting any missing, extra, or mismatched dimensions as build warnings. To help you prepare for stricter validation without breaking existing build pipelines, this check operates in warning mode by default, but can be promoted to an execution error by enabling the android.enforceDynamicFeatureVariantMatching=true Gradle option. From AGP 10.0 onwards, strict 1:1 variant parity will become enforced by default, turning all dimension mismatches between base apps and their dynamic feature modules into fatal build failures.

Standalone R8 Configuration Analyzer Gradle task: Android Gradle plugin 9.3 introduces a dedicated Gradle task for running the R8 Configuration Analyzer in isolation. The R8 Configuration Analyzer helps you optimize your app's code shrinking and obfuscation rules. Updated optimization DSL to configure R8 keep rules: Introduces an updated optimization DSL to configure keep rules for R8 optimization, supported by app modules and library module tests. Turning on optimization enables both code optimization and optimized resource shrinking. You no longer need to specify the default Android keep rules file. Note that the legacy DSL continues to be supported. Introduction of source sets to define keep rules: Place keep rules in the src//keepRules/ source set, with the file-suffix .keep. Source sets for keep rules are supported by the updated optimization DSL and the legacy DSL. Using source sets for keep rules is supported in app modules, library modules, and as a way to define consumer rules in Kotlin Multiplatform (KMP) modules.