todoapp

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

This example supports the following targets:

• Android (Compose)
• Desktop/JVM (Compose)
• Web/JavaScript (Compose)
• iOS (SwiftUI, not Compose)

Libraries used:

• Jetpack Compose - 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 Web UI
• ios - iOS 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

./gradlew :desktop:run

Building native desktop distribution

./gradlew :desktop:package
# 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

./gradlew :web:jsBrowserDevelopmentRun

Running iOS application

Open and build the Xcode project located in ios folder.