--- name: android-gradle-logic description: Expert guidance on setting up scalable Gradle build logic using Convention Plugins and Version Catalogs. ---

# Android Gradle Build Logic & Convention Plugins

This skill helps you configure a scalable, maintainable build system for Android apps using **Gradle Convention Plugins** and **Version Catalogs**, following the "Now in Android" (NiA) architecture.

## Goal Stop copy-pasting code between `build.gradle.kts` files. Centralize build logic (Compose setup, Kotlin options, Hilt, etc.) in reusable plugins.

## Project Structure

Ensure your project has a `build-logic` directory included in `settings.gradle.kts` as a composite build.

```text root/ ├── build-logic/ │ ├── convention/ │ │ ├── src/main/kotlin/ │ │ │ └── AndroidApplicationConventionPlugin.kt │ │ └── build.gradle.kts │ ├── build.gradle.kts │ └── settings.gradle.kts ├── gradle/ │ └── libs.versions.toml ├── app/ │ └── build.gradle.kts └── settings.gradle.kts ```

## Step 1: Configure `settings.gradle.kts`

Include the `build-logic` as a plugin management source.

```kotlin // settings.gradle.kts pluginManagement { includeBuild("build-logic") repositories { google() mavenCentral() gradlePluginPortal() } } dependencyResolutionManagement { repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS) repositories { google() mavenCentral() } } ```

## Step 2: Define Dependencies in `libs.versions.toml`

Use the Version Catalog for both libraries *and* plugins.

```toml [versions] androidGradlePlugin = "8.2.0" kotlin = "1.9.20"

[libraries] # ...

[plugins] android-application = { id = "com.android.application", version.ref = "androidGradlePlugin" } android-library = { id = "com.android.library", version.ref = "androidGradlePlugin" } kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" } # Define your own plugins here nowinandroid-android-application = { id = "nowinandroid.android.application", version = "unspecified" } ```

## Step 3: Create a Convention Plugin

Inside `build-logic/convention/src/main/kotlin/AndroidApplicationConventionPlugin.kt`:

```kotlin import com.android.build.api.dsl.ApplicationExtension import org.gradle.api.Plugin import org.gradle.api.Project import org.gradle.kotlin.dsl.configure

class AndroidApplicationConventionPlugin : Plugin<Project> { override fun apply(target: Project) { with(target) { with(pluginManager) { apply("com.android.application") apply("org.jetbrains.kotlin.android") }

extensions.configure<ApplicationExtension> { defaultConfig.targetSdk = 34 // Configure common options here } } } } ```

Don't forget to register it in `build-logic/convention/build.gradle.kts`:

```kotlin gradlePlugin { plugins { register("androidApplication") { id = "nowinandroid.android.application" implementationClass = "AndroidApplicationConventionPlugin" } } } ```

## Usage

Apply your custom plugin in your modules (e.g., `app/build.gradle.kts`):

```kotlin plugins { alias(libs.plugins.nowinandroid.android.application) } ```

This drastically cleans up module-level build files.

--- name: android-gradle-logic description: Expert guidance on setting up scalable Gradle build logic using Convention Plugins and Version Catalogs. ---

# Android Gradle Build Logic & Convention Plugins

This skill helps you configure a scalable, maintainable build system for Android apps using **Gradle Convention Plugins** and **Version Catalogs**, following the "Now in Android" (NiA) architecture.

## Goal Stop copy-pasting code between `build.gradle.kts` files. Centralize build logic (Compose setup, Kotlin options, Hilt, etc.) in reusable plugins.

## Project Structure

Ensure your project has a `build-logic` directory included in `settings.gradle.kts` as a composite build.

```text root/ ├── build-logic/ │ ├── convention/ │ │ ├── src/main/kotlin/ │ │ │ └── AndroidApplicationConventionPlugin.kt │ │ └── build.gradle.kts │ ├── build.gradle.kts │ └── settings.gradle.kts ├── gradle/ │ └── libs.versions.toml ├── app/ │ └── build.gradle.kts └── settings.gradle.kts ```

## Step 1: Configure `settings.gradle.kts`

Include the `build-logic` as a plugin management source.

```kotlin // settings.gradle.kts pluginManagement { includeBuild("build-logic") repositories { google() mavenCentral() gradlePluginPortal() } } dependencyResolutionManagement { repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS) repositories { google() mavenCentral() } } ```

## Step 2: Define Dependencies in `libs.versions.toml`

Use the Version Catalog for both libraries *and* plugins.

```toml [versions] androidGradlePlugin = "8.2.0" kotlin = "1.9.20"

[libraries] # ...

[plugins] android-application = { id = "com.android.application", version.ref = "androidGradlePlugin" } android-library = { id = "com.android.library", version.ref = "androidGradlePlugin" } kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" } # Define your own plugins here nowinandroid-android-application = { id = "nowinandroid.android.application", version = "unspecified" } ```

## Step 3: Create a Convention Plugin

Inside `build-logic/convention/src/main/kotlin/AndroidApplicationConventionPlugin.kt`:

```kotlin import com.android.build.api.dsl.ApplicationExtension import org.gradle.api.Plugin import org.gradle.api.Project import org.gradle.kotlin.dsl.configure

class AndroidApplicationConventionPlugin : Plugin<Project> { override fun apply(target: Project) { with(target) { with(pluginManager) { apply("com.android.application") apply("org.jetbrains.kotlin.android") }

extensions.configure<ApplicationExtension> { defaultConfig.targetSdk = 34 // Configure common options here } } } } ```

Don't forget to register it in `build-logic/convention/build.gradle.kts`:

```kotlin gradlePlugin { plugins { register("androidApplication") { id = "nowinandroid.android.application" implementationClass = "AndroidApplicationConventionPlugin" } } } ```

## Usage

Apply your custom plugin in your modules (e.g., `app/build.gradle.kts`):

```kotlin plugins { alias(libs.plugins.nowinandroid.android.application) } ```

This drastically cleans up module-level build files.

--- name: android-gradle-logic description: Expert guidance on setting up scalable Gradle build logic using Convention Plugins and Version Catalogs. ---

# Android Gradle Build Logic & Convention Plugins

This skill helps you configure a scalable, maintainable build system for Android apps using **Gradle Convention Plugins** and **Version Catalogs**, following the "Now in Android" (NiA) architecture.

## Goal Stop copy-pasting code between `build.gradle.kts` files. Centralize build logic (Compose setup, Kotlin options, Hilt, etc.) in reusable plugins.

## Project Structure

Ensure your project has a `build-logic` directory included in `settings.gradle.kts` as a composite build.

```text root/ ├── build-logic/ │ ├── convention/ │ │ ├── src/main/kotlin/ │ │ │ └── AndroidApplicationConventionPlugin.kt │ │ └── build.gradle.kts │ ├── build.gradle.kts │ └── settings.gradle.kts ├── gradle/ │ └── libs.versions.toml ├── app/ │ └── build.gradle.kts └── settings.gradle.kts ```

## Step 1: Configure `settings.gradle.kts`

Include the `build-logic` as a plugin management source.

```kotlin // settings.gradle.kts pluginManagement { includeBuild("build-logic") repositories { google() mavenCentral() gradlePluginPortal() } } dependencyResolutionManagement { repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS) repositories { google() mavenCentral() } } ```

## Step 2: Define Dependencies in `libs.versions.toml`

Use the Version Catalog for both libraries *and* plugins.

```toml [versions] androidGradlePlugin = "8.2.0" kotlin = "1.9.20"

[libraries] # ...

[plugins] android-application = { id = "com.android.application", version.ref = "androidGradlePlugin" } android-library = { id = "com.android.library", version.ref = "androidGradlePlugin" } kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" } # Define your own plugins here nowinandroid-android-application = { id = "nowinandroid.android.application", version = "unspecified" } ```

## Step 3: Create a Convention Plugin

Inside `build-logic/convention/src/main/kotlin/AndroidApplicationConventionPlugin.kt`:

```kotlin import com.android.build.api.dsl.ApplicationExtension import org.gradle.api.Plugin import org.gradle.api.Project import org.gradle.kotlin.dsl.configure

class AndroidApplicationConventionPlugin : Plugin<Project> { override fun apply(target: Project) { with(target) { with(pluginManager) { apply("com.android.application") apply("org.jetbrains.kotlin.android") }

extensions.configure<ApplicationExtension> { defaultConfig.targetSdk = 34 // Configure common options here } } } } ```

Don't forget to register it in `build-logic/convention/build.gradle.kts`:

```kotlin gradlePlugin { plugins { register("androidApplication") { id = "nowinandroid.android.application" implementationClass = "AndroidApplicationConventionPlugin" } } } ```

## Usage

Apply your custom plugin in your modules (e.g., `app/build.gradle.kts`):

```kotlin plugins { alias(libs.plugins.nowinandroid.android.application) } ```

This drastically cleans up module-level build files.

--- name: android-gradle-logic description: Expert guidance on setting up scalable Gradle build logic using Convention Plugins and Version Catalogs. ---

# Android Gradle Build Logic & Convention Plugins

This skill helps you configure a scalable, maintainable build system for Android apps using **Gradle Convention Plugins** and **Version Catalogs**, following the "Now in Android" (NiA) architecture.

## Goal Stop copy-pasting code between `build.gradle.kts` files. Centralize build logic (Compose setup, Kotlin options, Hilt, etc.) in reusable plugins.

## Project Structure

Ensure your project has a `build-logic` directory included in `settings.gradle.kts` as a composite build.

```text root/ ├── build-logic/ │ ├── convention/ │ │ ├── src/main/kotlin/ │ │ │ └── AndroidApplicationConventionPlugin.kt │ │ └── build.gradle.kts │ ├── build.gradle.kts │ └── settings.gradle.kts ├── gradle/ │ └── libs.versions.toml ├── app/ │ └── build.gradle.kts └── settings.gradle.kts ```

## Step 1: Configure `settings.gradle.kts`

Include the `build-logic` as a plugin management source.

```kotlin // settings.gradle.kts pluginManagement { includeBuild("build-logic") repositories { google() mavenCentral() gradlePluginPortal() } } dependencyResolutionManagement { repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS) repositories { google() mavenCentral() } } ```

## Step 2: Define Dependencies in `libs.versions.toml`

Use the Version Catalog for both libraries *and* plugins.

```toml [versions] androidGradlePlugin = "8.2.0" kotlin = "1.9.20"

[libraries] # ...

[plugins] android-application = { id = "com.android.application", version.ref = "androidGradlePlugin" } android-library = { id = "com.android.library", version.ref = "androidGradlePlugin" } kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" } # Define your own plugins here nowinandroid-android-application = { id = "nowinandroid.android.application", version = "unspecified" } ```

## Step 3: Create a Convention Plugin

Inside `build-logic/convention/src/main/kotlin/AndroidApplicationConventionPlugin.kt`:

```kotlin import com.android.build.api.dsl.ApplicationExtension import org.gradle.api.Plugin import org.gradle.api.Project import org.gradle.kotlin.dsl.configure

class AndroidApplicationConventionPlugin : Plugin<Project> { override fun apply(target: Project) { with(target) { with(pluginManager) { apply("com.android.application") apply("org.jetbrains.kotlin.android") }

extensions.configure<ApplicationExtension> { defaultConfig.targetSdk = 34 // Configure common options here } } } } ```

Don't forget to register it in `build-logic/convention/build.gradle.kts`:

```kotlin gradlePlugin { plugins { register("androidApplication") { id = "nowinandroid.android.application" implementationClass = "AndroidApplicationConventionPlugin" } } } ```

## Usage

Apply your custom plugin in your modules (e.g., `app/build.gradle.kts`):

```kotlin plugins { alias(libs.plugins.nowinandroid.android.application) } ```

This drastically cleans up module-level build files.