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Decompose Multiplatform Template

This is a Kotlin Multiplatform project template with Decompose configured.

Note Due to the current state of iOS support this template uses experimental versions of Decompose. If you have any issues, please report them on GitHub.

About this Project

You can use this template to start developing your own Decompose application targeting desktop, Android, and iOS, either by using Compose as shared UI across all platforms, or by using platform-specific UI like SwiftUI and Android XML.

The instructions below provide you additional information on how to work with this template and add features like navigation, state preservation and more.

The result will be a Kotlin Multiplatform project that uses the Decompose framework for common logic with the UI framework(s) of your choice and the features you need.

This project was inspired by the sample project of Decompose and the Compose Multiplatform Template.

Getting Started

In order to work with this template you need the following tools:

Additionally, if you plan to write and run iOS-specific code on simulated or real devices, you need the following:

  • A machine running a recent version of macOS
  • Xcode

Tools like KDoctor can assist you during the installation process.

Project Structure

The project consists of multiple modules:

shared

This is a Kotlin module that contains the shared logic of all platforms. This also includes the Decompose implementation.

compose-ui

This is a Kotlin module that contains the UI written with Compose Multiplatform that is shared across all platforms.

It depends on the shared module as it uses the component interfaces from Decompose.

app-desktop

This is a Kotlin module that contains and builds the desktop (JVM) application.

It makes use of the shared code from the modules shared and compose-ui.

app-android

This is a Kotlin module that contains and builds the Android mobile application.

It makes use of the shared code from the modules shared and compose-ui.

app-ios-compose

This is an Xcode project that builds an iOS mobile application with Compose UI.

It makes use of the shared code from the modules shared and compose-ui.

app-ios-swift

This is an Xcode project that builds an iOS mobile application with SwiftUI.

This module uses only the shared module and SwiftUI for its UI (instead of Compose).

Note In practice you normally have either app-ios-compose or app-ios-swift.

Therefore, do not hesitate to merge them or delete one of the two.

Running the project

Depending on the platform you want to build for and run the project on, different gradle tasks may be used.

For Android

When using Android Studio you can simply select app-android from the run configurations and run the app.

For Desktop

./gradlew :app-desktop:run

For iOS (Compose)

If you have installed the Kotlin Multiplatform Mobile plugin you can simply select app-ios-compose from the run configurations and run the app.

Alternatively you can open app-ios-compose/app-ios-compose.xcodeproj in XCode and launch the project from there.

For iOS (Swift)

If you have installed the Kotlin Multiplatform Mobile plugin you can simply select app-ios-swift from the run configurations and run the app.

Alternatively you can open app-ios-swift/app-ios-swift.xcodeproj in XCode and launch the project from there.

Further Reading

We encourage you to explore Decompose's features further and try adding them into your project:

You can also have a look at various integrations, including:

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Kotlin Multiplatform project template with Decompose library

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