An example of Kotlin Multiplatform todo app with shared Android/Desktop Compose UI and SwiftUI (not Compose) iOS.

Previously this code was located in [JetBrains/compose-multiplatform] repository.

But it was deleted in this commit

I've copied it to a separate repo and maintaining it here now.

This example supports the following targets:

• Android (Compose)
• Desktop/JVM (Compose)
• Web/JavaScript (Compose)
• iOS (Both SwiftUI and Compose)

Libraries used:

• Compose Multiplatform - shared UI
• Decompose - navigation and lifecycle
• MVIKotlin - presentation and business logic
• Reaktive - background processing and data transformation
• SQLDelight - data storage

There are multiple modules:

• :common:utils - just some useful helpers
• :common:database - SQLDelight database definition
• :common:main - displays a list of todo items and a text field
• :common:edit - accepts an item id and allows editing
• :common:root - navigates between main and edit screens
• :common:compose-ui - Shared Compose UI for Android and Desktop
• :android - Android application
• :desktop - Desktop application
• :web - Web browser application + Compose HTML Library
• :ios-compose-umbrella - iOS Umbrella module with UI in Compose Multiplatform. Used in ios-compose application
• ios - iOS SwiftUI Xcode project
• ios-compose - iOS Compose Multiplatform Xcode project

The root module is integrated into Android, Desktop and iOS (non-Compose) apps.

Features:

• 99% of the code is shared: data, business logic, presentation, navigation and UI
• View state is preserved when navigating between screens, Android configuration change, etc.
• Model-View-Intent (aka MVI) architectural pattern
• Pluggable UI - Compose UI for Android, Desktop and Web, SwiftUI (not Compose) for iOS

Running desktop application

• To run, launch command: ./gradlew :desktop:run
• Or choose desktop configuration in IDE and run it.
  

Building native desktop distribution

./gradlew :desktop:packageDistributionForCurrentOS
# outputs are written to desktop/build/compose/binaries

Running Android application

Open project in Intellij IDEA or Android Studio and run "android" configuration.

Running Web browser application

• To run, launch command: ./gradlew :web:jsBrowserDevelopmentRun
• Or choose browser configuration in IDE and run it.
  

Running iOS SwiftUI application

Open and build the Xcode project located in ios folder.

Running iOS Compose Multiplatform application

Open and build the Xcode project located in ios-compose folder.