Documentation / Contents

Developer Guide

Read the guide in order, or jump to the chapter you need.

Preface

  1. Preface

Getting started

  1. Introduction
  2. Maven Project Workflow
  3. Gradle project workflow

Core concepts

  1. The EDT - Event Dispatch Thread
  2. Events
  3. Device Input and Form Factors

User interface

  1. Basics: Themes, styles, components, and layouts
  2. The components of Codename One
  3. Component selector
  4. Rich Text and Code Editing
  5. Accessibility Semantics
  6. Animations

Theming and styling

  1. Advanced theming
  2. Native modern themes
  3. CSS

Graphics and games

  1. Graphics, drawing, images, and fonts
  2. Build-Time Vector & Animation Images
  3. 3D Graphics and Shaders
  4. Augmented Reality
  5. Virtual Reality and 360 Media
  6. Game Development
  7. The Game Builder
  8. Game Assets

Data, media and networking

  1. File system, storage, network, and parsing
  2. Deeper Network Connectivity
  3. JSON / XML Object Mapping
  4. Component Binding
  5. SQLite ORM
  6. Media and Audio
  7. Video encoding & decoding (VideoIO)
  8. Video capture constraints API

Server side

  1. Server-side backend
  2. Backend controllers, contracts and WebSockets
  3. Backend beans and dependency injection
  4. Backend testing
  5. Backend data access and transactions
  6. Backend sessions
  7. Backend security
  8. Backend scheduling and background work
  9. Backend tracing, metrics and management
  10. Backend MCP and the agent loop
  11. Backend performance, deployment and limits

Device and platform services

  1. Push notifications
  2. Notifications and Background Execution
  3. Calendar integration
  4. External Surfaces: Widgets and Live Activities
  5. Maps
  6. In-Car Experiences (CarPlay & Android Auto)
  7. Motion Sensors
  8. Near-Field Communication (NFC)
  9. Bluetooth
  10. Nearby Devices
  11. Call Management
  12. VPN
  13. Health
  14. Smart Home
  15. Printing
  16. Deep-Link Routing
  17. State Restoration and Continuity
  18. App Intents: Siri, Spotlight and Shortcuts
  19. Document Provider
  20. Apple Wallet Extension
  21. Miscellaneous features

AI and agents

  1. AI, Chat UI, and Speech
  2. MCP Headless API

Security and identity

  1. Security
  2. App Shield
  3. App Hardening
  4. Biometric Authentication
  5. Authentication and Identity
  6. Phone Number Verification

Monetization and analytics

  1. Commerce
  2. Monetization
  3. Advertising
  4. Analytics
  5. Distributed tracing with OpenTelemetry
  6. App Review & Feedback
  7. Crash Protection

Testing, performance and debugging

  1. Testing with JUnit 5
  2. Performance, size & debugging
  3. On-Device Debugging (iOS)
  4. On-Device Debugging (Android)

Build, sign and ship

  1. Build hints reference
  2. Signing, certificates & provisioning
  3. App Store Submission and Deployment

Platform guides

  1. Working with iOS
  2. Working with JavaScript
  3. Running Android applications
  4. Running Unity 2D games
  5. Working with macOS
  6. Working with Mac Catalyst
  7. Working with the native Windows port
  8. Working with the native Linux port
  9. Desktop Integration
  10. Desktop Windows
  11. Wearables (Apple Watch and Wear OS)
  12. Television (Apple TV and Android TV)

Under the hood

  1. Advanced topics/under the hood
  2. Java in the browser: The Playground compiler and the self-hosted translator
  3. Working with Codename One sources
  4. Skin Designer

Appendices

  1. Promises
  2. Plugins
  3. Project archetypes
  4. Maven goals
  5. API
  6. Codename One Settings
  7. Rich properties file (rpf) format

Historical reference

  1. Working with UWP