Multi-Module Architecture in Android - Convention Plugins & Layer Separation (2026)

Multi-module projects scale better and improve code reusability. Master convention plugins and proper layer separation for maintainable Android architecture. Setting Up Multi-Module Structure Organize your project into logical layers: app/ ├── feature-home/ ├── feature-detail/ ├── core-common/ ├── core-data/ ├── core-network/ └── core-ui/ Creating Convention Plugins Convention plugins reduce boilerplate by encapsulating build logic: // buildSrc/src/main/kotlin/android.base.gradle.kts plugins { id ( "com.android.library" ) kotlin ( "android" ) } android { compileSdk = 35 defaultConfig { minSdk = 24 targetSdk = 35 } compileOptions { sourceCompatibility = JavaVersion . VERSION_17 targetCompatibility = JavaVersion . VERSION_17 } } Feature Module Dependencies Keep feature modules loosely coupled: // feature-home/build.gradle.kts plugins { id ( "android.base" ) id ( "android.compose" ) } dependencies { implementation ( project ( ":core-ui" )) implementation ( project ( ":core-data" )) api (