## Major Changes
### New Jetpack Compose Architecture (1,883 LOC total)
- ComposeMainActivity.kt (370L): Main activity with Compose integration
- MainScreen.kt (322L): Root Compose screen with layout orchestration
- MainViewModel.kt (564L): MVVM state management for notes and sync
- components/NoteCard.kt (243L): Individual note card with selection support
- components/NotesList.kt (65L): LazyColumn with optimized item rendering
- components/DeleteConfirmationDialog.kt (93L): Dialog with Server/Local options
- components/EmptyState.kt (73L): Empty state UI
- components/NoteTypeFAB.kt (83L): Floating action button with note type menu
- components/SyncStatusBanner.kt (70L): Sync status indicator banner
### Material 3 & Design System
- SimpleNotesTheme.kt: Material 3 theme with Dynamic Colors (Material You)
- Full Material 3 color scheme implementation
- Dynamic color support for Android 12+ (Material You)
- Consistent design across MainActivity and SettingsActivity
### Performance Optimizations
- Upgraded Compose BOM: 2024.12.01 → 2026.01.00 (latest Jan 2026)
- Enable Strong Skipping Mode for efficient recomposition
- Async loadNotes() on IO dispatcher (no UI blocking at startup)
- LazyColumn with proper key={it.id} and contentType
- Pull-to-refresh with PullToRefreshBox
- Minimal recomposition with state separation
### Multi-Select Feature (v1.5.0)
- Long-press note to enter selection mode
- Tap additional notes to toggle selection in selection mode
- SelectionTopBar with:
* Selection counter ("X selected")
* Select All button
* Batch Delete button
- Animated checkbox indicator on selected note cards
- DeleteConfirmationDialog with Server/Local deletion options
- Fixed server deletion: deleteNoteFromServer() now properly called with 3.5s delay
### Dependency Updates
- Added org.jetbrains.kotlin.plugin.compose (Compose Compiler)
- Jetpack Compose libraries:
* androidx.compose.bom:2026.01.00
* androidx.compose.ui, material3, material-icons-extended
* androidx.activity-compose, androidx.navigation-compose
* androidx.lifecycle-runtime-compose
- All dependencies remain Apache 2.0 licensed (100% FOSS)
### Animation & Transitions
- New animation resources:
* slide_in_right.xml, slide_out_left.xml
* slide_in_left.xml, slide_out_right.xml
- Settings slide animations (left/right navigation)
- Selection mode TopBar transitions (fade + slide)
- Smooth selection checkbox appearance
### Backward Compatibility
- NoteEditorActivity (XML) still used (kept for compatibility)
- Existing database and sync functionality unchanged
- Smooth migration path for future Compose editor
### Bug Fixes
- Server deletion now executes after snackbar timeout (3.5s)
- Multi-select batch deletion with undo support
- FAB z-index fixed to ensure visibility above all content
- Scroll-to-top animation on new note creation
### Code Quality
- Removed 805-line legacy MainActivity.kt
- Clean separation of concerns: Activity → Screen → ViewModel
- Composable functions follow Material 3 guidelines
- No remember() blocks inside LazyColumn items (performance)
- Direct MaterialTheme access (Compose handles optimization)
### Manifest Changes
- Updated to use ComposeMainActivity as main launcher
- Activity transition animations configured
### Testing
- Build successful on Pixel 9 Pro XL (Android 16, 120Hz)
- Release build optimized (minified + shrinkResources)
- Multi-select UX tested
- Server deletion verified
BREAKING CHANGE: Long-press on note now enters multi-select mode instead of direct delete
RELATED: v1.5.0_EXTENDED_FEATURES_PLAN.md added to project-docs
Simple Notes - Android App
🚧 Development Setup
Voraussetzungen
- Android Studio Hedgehog (2023.1.1) oder neuer
- JDK 17
- Android SDK 34
- Min SDK 24
Projekt in Android Studio öffnen
# In Android Studio:
# File → New → New Project
# Template: Empty Views Activity
#
# Settings:
# Name: Simple Notes
# Package: com.example.simplenotes
# Save location: /home/liq/gitProjects/simple-notes-sync/android/
# Language: Kotlin
# Minimum SDK: API 24
# Build configuration: Kotlin DSL
Dependencies
Siehe ANDROID_GUIDE.md in project-docs für vollständige build.gradle.kts:
Hauptabhängigkeiten:
- Sardine Android (WebDAV Client)
- Kotlin Coroutines
- Gson (JSON)
- WorkManager (Background Sync)
- Material Design Components
Projektstruktur
android/
└── app/
└── src/
└── main/
├── AndroidManifest.xml
├── java/com/example/simplenotes/
│ ├── MainActivity.kt
│ ├── NoteEditorActivity.kt
│ ├── SettingsActivity.kt
│ ├── models/
│ │ ├── Note.kt
│ │ └── SyncStatus.kt
│ ├── storage/
│ │ └── NotesStorage.kt
│ ├── sync/
│ │ ├── WebDavSyncService.kt
│ │ ├── WifiSyncReceiver.kt
│ │ ├── SyncWorker.kt
│ │ └── ConflictResolver.kt
│ ├── adapters/
│ │ └── NotesAdapter.kt
│ └── utils/
│ ├── DeviceIdGenerator.kt
│ ├── NotificationHelper.kt
│ ├── Extensions.kt
│ └── Constants.kt
└── res/
├── layout/
├── values/
└── drawable/
📖 Development Guide
Vollständige Code-Beispiele und Implementation:
🏗️ Build
# Debug Build
./gradlew assembleDebug
# Release Build
./gradlew assembleRelease
# Install on connected device
./gradlew installDebug
🧪 Testing
# Run unit tests
./gradlew test
# Run instrumented tests
./gradlew connectedAndroidTest
📝 TODO
- Projekt in Android Studio erstellen
- Dependencies einrichten
- Models implementieren (Note.kt, SyncStatus.kt)
- Storage Layer (NotesStorage.kt)
- UI Layouts erstellen
- Activities implementieren
- Sync Service (WebDavSyncService.kt)
- WLAN Detection (WifiSyncReceiver.kt)
- WorkManager Setup (SyncWorker.kt)
- Notifications (NotificationHelper.kt)
- Error Handling
- Testing
Next Step: Projekt in Android Studio erstellen und Code aus ANDROID_GUIDE.md übernehmen.