Dependency Injection (EN)

Dependency Injection for all artifacts (including shared ones) is delegated to each platform. For example, the Android modules makes use of Dagger to inject dependencies.

Nevertheless, the di package of the shared module contains expected annotations classes that can be used to describe dependencies. For example, here is the Inject annotation.

@UseExperimental(ExperimentalMultiplatform::class)
@OptionalExpectation
@Target(AnnotationTarget.CONSTRUCTOR, AnnotationTarget.FUNCTION, AnnotationTarget.FIELD)
@Retention(AnnotationRetention.RUNTIME)
expect annotation class Inject()

Here is the actual Android implementation.

actual typealias Inject = javax.inject.Inject

The expected dependency injection classes are marked as optional, so that all platforms don't have to provide actual counterparts.