iOS & Mobile Development¶

Reference knowledge base for iOS and Android mobile app development. Covers Swift language, SwiftUI framework, persistence (SwiftData + Core Data), networking, animations, MapKit, StoreKit, and Android development with Kotlin.

Swift Language¶

• swift fundamentals - Variables, types, functions, arrays, control flow, extensions
• swift structs and classes - Value vs reference types, protocols, methods, computed properties
• swift enums and optionals - Enums with raw values, optionals, switch, pattern matching

SwiftUI Framework¶

• swiftui views and modifiers - Views, layout containers, modifier chaining, images, buttons, GeometryReader
• swiftui state and data flow - @State, @Binding, @Observable, @Environment, @FocusState, onChange
• swiftui navigation - NavigationStack, NavigationLink, sheets, TabView, toolbar, searchable
• swiftui lists and grids - List, ForEach, LazyVGrid, ScrollView, sort/filter/search patterns
• swiftui forms and input - TextField, TextEditor, DatePicker, Slider, Form, create/edit patterns
• swiftui animations - withAnimation, transitions, matchedGeometryEffect, @Namespace, looping

Data & Networking¶

• swiftui networking - async/await, URLSession, JSONDecoder, Codable, AsyncImage, fetch services
• swiftdata persistence - @Model, @Query, modelContainer, CRUD operations (iOS 17+)
• core data persistence - NSManagedObject, @FetchRequest, NSPredicate, PersistenceController

Apple Frameworks¶

• mapkit integration - Map view, annotations, MapCamera, satellite/standard toggle
• storekit in app purchases - StoreKit 2, purchase flow, product management, entitlements
• avkit audio and haptics - AVAudioPlayer, background music, sound effects, haptic feedback

Tooling¶

• xcode project setup - Project creation, previews, file organization, version control

Android (Kotlin)¶

• kotlin android fundamentals - Kotlin basics, project structure, Fragments, RecyclerView, navigation
• android mvvm architecture - ViewModel, LiveData, coroutines, Repository pattern, Services
• android room database - Entity, DAO, Database singleton, LiveData queries
• android retrofit networking - REST API interfaces, Gson, OkHttp, annotations
• android dagger dependency injection - Modules, Components, @Provides, @Singleton, @Inject

Additional References¶

• android sparkle filter - Implementing realtime sparkle/glitter effects on clothing in live camera preview on Android
• graph algorithms swift - Adjacency list graphs, BFS/DFS traversal, and shortest path algorithms with mapping examples
• refactoring view controllers - Systematic decomposition of massive view controllers into testable components using extraction
• swift collections beyond arrays - Sets and Dictionaries in Swift with performance characteristics, set operations, and access patterns
• swift generics - Type-safe reusable functions and types with generic parameters, constraints, and associated types
• swift macros - Compile-time code generation via attached and freestanding macros using AST transformation in Swift
• swift phantom types - Compile-time-only type parameters for enforcing state machines, unit safety, and domain constraints
• swiftui layout testing - Property-based fuzzing to verify custom layout engines against Apple's native SwiftUI rendering
• type safe modeling - Using enums, structs, and generics to eliminate impossible states and make APIs self-documenting
• wrapping c libraries - Bridging C functions into Swift with type safety, automatic memory management via deinit, and error