--- title: Getting Started with Koin Annotations 1.4 in Compose Multiplatform description: Streamline your Compose Multiplatform project by migrating from Koin DSL to Koin Annotations 1.4. Learn dependency setup, component migration, and platform implementations. image: https://blog.kotzilla.io/hubfs/Screenshot%202024-10-24%20at%2012.03.30.png --- [Skip to content](https://blog.kotzilla.io/koin-annotations-1.4-in-compose-multiplatform#main-content) [![kotzilla (3)](https://blog.kotzilla.io/hubfs/kotzilla%20(3).svg)](https://kotzilla.io/) - [Koin](https://insert-koin.io/) - [Koin IDE Plugin](https://plugins.jetbrains.com/plugin/26131-koin-dependency-injection-official-) - [Koin LTS](https://kotzilla.io/koin-lts) - [Developer Hub](https://doc.kotzilla.io/) Open main navigation Close main navigation - [Koin](https://insert-koin.io/) - [Koin IDE Plugin](https://plugins.jetbrains.com/plugin/26131-koin-dependency-injection-official-) - [Koin LTS](https://kotzilla.io/koin-lts) - [Developer Hub](https://doc.kotzilla.io/) - [Contact us](https://blog.kotzilla.io/koin-annotations-1.4-in-compose-multiplatform#contact) [Contact us](https://blog.kotzilla.io/koin-annotations-1.4-in-compose-multiplatform#contact) Oct 17, 2024, 3:44:50 PM # Getting Started with Koin Annotations 1.4 in Compose Multiplatform [The Kotzilla Team](https://blog.kotzilla.io/author/the-kotzilla-team) Share: [facebook-f icon](http://www.facebook.com/share.php?u=https://blog.kotzilla.io/koin-annotations-1.4-in-compose-multiplatform) [linkedin-in icon](http://www.linkedin.com/shareArticle?mini=true&url=https://blog.kotzilla.io/koin-annotations-1.4-in-compose-multiplatform) [Twitter icon](https://twitter.com/intent/tweet?url=https://blog.kotzilla.io/koin-annotations-1.4-in-compose-multiplatform) [pinterest-p icon](http://pinterest.com/pin/create/link/?url=https://blog.kotzilla.io/koin-annotations-1.4-in-compose-multiplatform) [envelope icon](mailto:?body=https://blog.kotzilla.io/koin-annotations-1.4-in-compose-multiplatform) ![Getting Started with Koin Annotations 1.4 in Compose Multiplatform](https://139572340.fs1.hubspotusercontent-eu1.net/hub/139572340/hubfs/Screenshot%202024-10-17%20at%2015.18.23.png?width=1200&length=1200&name=Screenshot%202024-10-17%20at%2015.18.23.png) If you've been using Koin's DSL for dependency injection in your Kotlin Multiplatform projects, you might be interested in exploring a more annotation-driven approach. In this guide, Arnaud walks you through migrating a simple [Compose Multiplatform](https://www.jetbrains.com/compose-multiplatform/) application from Koin DSL to the new [Koin Annotations 1.4.](https://insert-koin.io/docs/reference/koin-annotations/start) ## Project Overview We'll be working with the [KMP App Template](https://github.com/InsertKoinIO/KMP-App-Template/?tab=readme-ov-file#using-koin-annotations) from JetBrains, which provides a great starting point for our exploration. The data displayed by the app is from [The Metropolitan Museum of Art Collection API](https://metmuseum.github.io/).  This app already uses [Koin](https://insert-koin.io/) for dependency injection. This template implements this simple art gallery application that displays a list of paintings and their details. While the functionality is straightforward, it serves as an excellent example to demonstrate Koin's annotation-based dependency injection. And bonus : it's beautiful to look at.  ## Setting Up Dependencies Before diving into the migration, let's ensure we have all the necessary dependencies: ![Screenshot 2024-10-25 at 09.03.09](https://blog.kotzilla.io/hs-fs/hubfs/Screenshot%202024-10-25%20at%2009.03.09.png?width=651&height=204&name=Screenshot%202024-10-25%20at%2009.03.09.png) Don't forget to set up [KSP (Kotlin Symbol Processing)](https://mvnrepository.com/artifact/com.google.devtools.ksp/symbol-processing-api/1.9.24-1.0.20) in your project, as it's essential for annotation processing. ## Project Structure Our sample application follows a clean architecture approach with the following key components: - Data Layer: - `MuseumAPI`: Handles remote data fetching - `MuseumRepository`: Manages data operations - `MuseumStorage`: Handles local data persistence - UI Layer: - List Screen: Displays paintings grid - Detail Screen: Shows painting details - ViewModels: Manages UI state and business logic ## Migrating to Koin Annotations ### Step 1: View Model Migration Let's start by migrating our view models from DSL to annotations. Replace the existing DSL module definition: ![Screenshot 2024-10-25 at 09.03.45](https://blog.kotzilla.io/hs-fs/hubfs/Screenshot%202024-10-25%20at%2009.03.45.png?width=637&height=220&name=Screenshot%202024-10-25%20at%2009.03.45.png) ### Step 2: Data Layer Migration Next, let's tackle the data layer components: ![Screenshot 2024-10-25 at 09.04.32](https://blog.kotzilla.io/hs-fs/hubfs/Screenshot%202024-10-25%20at%2009.04.32.png?width=607&height=287&name=Screenshot%202024-10-25%20at%2009.04.32.png) ### Step 3: Complex Initializations For more complex scenarios where you need custom initialization logic, you can use separate functions with the `@Single` annotation: ![Screenshot 2024-10-17 at 15.08.46](https://blog.kotzilla.io/hs-fs/hubfs/Screenshot%202024-10-17%20at%2015.08.46.png?width=598&height=241&name=Screenshot%202024-10-17%20at%2015.08.46.png) ## Platform-Specific Components One of the powerful features of Koin Annotations is its support for platform-specific implementations. Here's how to set it up: ![Screenshot 2024-10-25 at 09.05.21](https://blog.kotzilla.io/hs-fs/hubfs/Screenshot%202024-10-25%20at%2009.05.21.png?width=633&height=645&name=Screenshot%202024-10-25%20at%2009.05.21.png) ## Benefits of Using Koin Annotations **🔸 Cleaner Code**: Annotations provide a more declarative and concise way to define dependencies **🔸 Better IDE Support**: Enhanced code navigation and refactoring capabilities **🔸 Compile-Time Validation**: Earlier detection of dependency injection issues **🔸 Reduced Boilerplate**: KSP generates necessary extension functions automatically **🔸 Platform-Specific Support**: Seamless handling of platform-specific dependencies ## Wrapping Up Migrating from Koin DSL to Annotations might require some initial setup, but the benefits in terms of code clarity and maintainability are well worth it. The annotation-based approach provides a more familiar paradigm for developers coming from other dependency injection frameworks while maintaining Koin's lightweight and Kotlin-first philosophy. Remember to check out the [official Koin documentation](https://insert-koin.io/) for more detailed information and advanced usage scenarios. Tell us what you think! [Koin](https://blog.kotzilla.io/tag/koin), [Android](https://blog.kotzilla.io/tag/android), [Koin Annotations](https://blog.kotzilla.io/tag/koin-annotations), [Kotlin](https://blog.kotzilla.io/tag/kotlin), [KMP](https://blog.kotzilla.io/tag/kmp) ## Related posts [![How to Migrate from Dagger2/Hilt to Koin for KMP](https://blog.kotzilla.io/hs-fs/hubfs/Screenshot%202024-10-24%20at%2012.22.31.png?height=200&name=Screenshot%202024-10-24%20at%2012.22.31.png)](https://blog.kotzilla.io/migrate-from-hilt-to-koin) [Koin](https://blog.kotzilla.io/tag/koin), [Kotlin](https://blog.kotzilla.io/tag/kotlin), [Dependency Injection](https://blog.kotzilla.io/tag/dependency-injection), [Hilt](https://blog.kotzilla.io/tag/hilt), [Dagger](https://blog.kotzilla.io/tag/dagger) ## [How To Migrate from Hilt to Koin - A Detailed Guide](https://blog.kotzilla.io/migrate-from-hilt-to-koin) [The Kotzilla Team](https://blog.kotzilla.io/author/the-kotzilla-team) Jul 23, 2024, 3:20:39 PM Migrating from Hilt to Koin might seem daunting at first, but it's actually more manageable than... [Read more](https://blog.kotzilla.io/migrate-from-hilt-to-koin) [![Koin IDE Plugin releases page showing Koin Annotations 2.2 support in version 1.5.1 for Android and Kotlin dependency injection](https://blog.kotzilla.io/hs-fs/hubfs/Whats%20new%20November%202024%20(1).png?height=200&name=Whats%20new%20November%202024%20(1).png)](https://blog.kotzilla.io/koin-ide-plugin-1-5-1-annotations-2-2-jsr-330-android-kotlin) [Koin Annotations](https://blog.kotzilla.io/tag/koin-annotations), [Kotzilla Platform](https://blog.kotzilla.io/tag/kotzilla-platform), [Koin IDE Plugin](https://blog.kotzilla.io/tag/koin-ide-plugin), [Debugging](https://blog.kotzilla.io/tag/debugging) ## [Koin IDE Plugin 1.5.1: Koin Annotations 2.2 Support with JSR-330 Compatibility](https://blog.kotzilla.io/koin-ide-plugin-1-5-1-annotations-2-2-jsr-330-android-kotlin) ![Picture of Art Shendrik](https://blog.kotzilla.io/hs-fs/hubfs/Screenshot%202024-12-09%20at%2013.21.54.png?width=50&name=Screenshot%202024-12-09%20at%2013.21.54.png) [Art Shendrik](https://blog.kotzilla.io/author/art-shendrik) Nov 10, 2025, 4:00:55 PM In this update, we've achieved compatibility with Koin Annotations 2.2, unlocking the power of... [Read more](https://blog.kotzilla.io/koin-ide-plugin-1-5-1-annotations-2-2-jsr-330-android-kotlin) [![](https://blog.kotzilla.io/hs-fs/hubfs/Screenshot%202024-10-24%20at%2012.13.58.png?height=200&name=Screenshot%202024-10-24%20at%2012.13.58.png)](https://blog.kotzilla.io/why-migrate-from-dagger2/hilt-to-koin) [Koin](https://blog.kotzilla.io/tag/koin), [Android](https://blog.kotzilla.io/tag/android), [Kotlin](https://blog.kotzilla.io/tag/kotlin), [Kotlin Multiplatform](https://blog.kotzilla.io/tag/kotlin-multiplatform), [KMP](https://blog.kotzilla.io/tag/kmp), [Cheat Sheet](https://blog.kotzilla.io/tag/cheat-sheet) ## [Why Migrate from Dagger2/Hilt to Koin?](https://blog.kotzilla.io/why-migrate-from-dagger2/hilt-to-koin) [The Kotzilla Team](https://blog.kotzilla.io/author/the-kotzilla-team) Oct 11, 2024, 11:13:51 AM We’ve just wrapped up Koin’s very first webinar, and it was a great session, thanks to all those... 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