Adrian Kuta
dd4576409d
- CharacterListRoot: koinViewModel(), ObserveAsEvents, forwards nav + shows snackbar via Context asString. - CharacterListScreen: pure state+onAction; AppScaffold + LazyColumn (key=id), design-system NetworkImage (contentDescription)/AppCard, loading/error/empty states, snapshot-based scroll-to-end -> OnLoadNextPage (ViewModel guards duplicates). - Loaded + error previews wrapped in AppTheme. - feature:characters:presentation now exposes kotlinx-immutable as api (ImmutableList is in the state API).
Android Architecture Showcase
A single runnable Android-only (Jetpack Compose) reference app that demonstrates good architecture conventions — each in its own module/example. Teaching repo: every module is meant to be minimal but complete and idiomatic.
Status: built milestone-by-milestone from the Linear backlog. Foundation (scaffold, version catalog,
build-logicconvention plugins) is complete and the project assembles green. Full architecture docs land with the Quality & Docs milestone.
Stack
Multi-module Gradle + build-logic convention plugins · Koin (constructor DSL) · Ktor ·
KotlinX Serialization · Coil · Kermit · type-safe Compose Navigation. Data comes from the no-key
Rick & Morty API.
What it will showcase: MVI as the primary presentation pattern (flagship characters feature),
an MVVM contrast screen, and the same MVI ViewModel driven by two renderers — Jetpack
Compose and classic XML + ViewBinding + RecyclerView — proving the presentation logic is
UI-toolkit-agnostic.
Module structure
:app → wires everything; single Activity, Compose host
:build-logic → Gradle convention plugins (the only place versions/config live)
:core:domain → Result/error types, shared domain models (pure Kotlin)
:core:data → Ktor HttpClient factory, safe-call helpers
:core:presentation → UiText, ObserveAsEvents, DataError → UiText
:core:design-system → AppTheme + reusable composables
:feature:characters:domain → models + repository interface (pure Kotlin)
:feature:characters:data → DTOs, mappers, data source, repository impl
:feature:characters:presentation → MVI ViewModel/State/Action/Event (UI-agnostic: no Compose, no Views)
:feature:characters:presentation-compose → Compose renderer
:feature:characters:presentation-views → Views/XML renderer (same ViewModel)
:feature:about:presentation → MVVM contrast screen
Dependency rules: presentation → domain ← data; domain depends only on :core:domain;
features never depend on other features; :app wires the graph.
Build & run
./gradlew assembleDebug # build the APK
./gradlew projects # print the module tree
./gradlew check # tests + lint (added in the Quality & Docs milestone)
Requires JDK 17+ (the Gradle build pins a Java 17 toolchain) and the Android SDK
(compileSdk 36, minSdk 24).