Android Kotlin Developer

Discover what Android is, where it runs, why it's open source, and get introduced to the tools and SDK used to develop Android applications.

Explore Android Studio, its project structure (manifests, code, resources), and Gradle—the build system essential for creating, organizing, and running Android apps.

Set up Android Studio, create and run your first "Hello World" app, explore project structure, and customize the app icon to establish your Android development environment.

Explore the basics of Kotlin: syntax, data types, functions, scope, operations, and collections, laying the groundwork for modern Android app development.

Practice using variables, data types, operations, and functions in Kotlin. Apply concepts by building and testing a smart calculator app with functions and conditional logic.

Learn how to use Kotlin collections to store, loop through, filter, and transform data, then apply these concepts by building a functional shopping cart system.

Learn object-oriented programming concepts: classes, objects, properties, behaviors, encapsulation, inheritance, polymorphism, abstraction, composition, and data classes in Kotlin.

Learn to build, encapsulate, extend, and reuse classes in Kotlin using inheritance and polymorphism. Apply concepts by designing vehicles that delegate behavior to engines in a coding exercise.

Explore the Android platform: architecture layers, core app components, the Manifest file, Intents, permissions, and building secure, user-focused Android apps.

Learn how Android manages Activity lifecycles, how to respond with lifecycle callbacks, and ensure smooth state preservation during interruptions or configuration changes.

Explore Android Activity lifecycles, understand state loss on recreation, and learn how to preserve user data using lifecycle methods and state saving techniques.

Learn the fundamentals of Android XML layouts: view hierarchy, LinearLayout, weights, styles, resources, and adapting layouts for different devices, languages, and themes.

Learn to design Android screens using XML and the Layout Editor. Preview, style, and build responsive UIs visually and through code, completing a hands-on layout exercise.

Learn to organize Android layouts with reusable styles, resource files for colors, strings, and dimens, and enable theming and dark mode for a maintainable, adaptive UI.

Explore how Android apps handle user interactions: connecting layouts to code, using listeners for events, collecting input with EditText, and providing responsive feedback.

Learn how to connect UI XML with Kotlin, handle user input, validate data, update views, and provide real-time feedback to make Android apps interactive.

Understand Android navigation patterns, the back stack, Back vs Up buttons, intent-based navigation, and how to configure deep links for direct screen access.

Learn multi-screen app navigation in Android: use explicit and implicit Intents to pass data and share content between Activities, building a simple two-screen music app.

Learn what Fragments are in Android, how they provide reusable UI sections within Activities, their lifecycle, usage, and when to use them for flexible, modular app design.

Learn to refactor an app using Fragments for responsive layouts, manage navigation, pass data via arguments, and support both phones (single-pane) and tablets (two-pane) in Android.

Learn the concept of custom views in Android, how to build reusable UI components, manage their lifecycle, and their role within Activities and Fragments for consistent, maintainable UIs.

Learn to create reusable custom views in Android to simplify UI code, improve modularity, and handle shared behaviors like favorite state in components.

Learn how to debug Android apps by identifying, investigating, and resolving crashes, logic errors, and layout issues using Logcat, the debugger, and practical troubleshooting steps.

Learn how to localize Android apps by using string resources, supporting multiple languages, proper formatting, and testing to create culturally adaptable, accessible user interfaces.

Discover UI design principles by exploring Material Design's philosophy, components, and theme system to create cohesive, accessible, and professional Android app interfaces.

Get started with advanced Android app architecture using MVVM, Room, Retrofit, and Compose. Build production-ready apps with real-world tools and best practices.

This lesson is all about data persistence, there are many ways to storing data permanently, but with Room things have become even easier than ever before!

Learn how the Android ViewModel keeps app data safe during UI changes, manages background tasks, and prevents memory leaks for robust, crash-resistant mobile apps.

Learn how to use ViewModel to separate UI and business logic, preserve app state across configuration changes, and build robust Android apps using MVVM architecture.

Learn how to use Observables like LiveData to manage app and UI state, ensuring automatic, seamless UI updates and robust state persistence in mobile development.

Learn to distinguish remote (server) state from local state in apps, understanding their characteristics, usage, and best practices for reliability and maintainability.

Learn to manage application and UI state by classifying data, matching it to survival tiers, and choosing the right tools like ViewModel, SavedStateHandle, or persistent storage.

Learn to preserve UI and application state in Android apps using ViewModel and SavedStateHandle, ensuring data survives rotations, process death, and system interruptions.

Explore Android's Navigation Component—a Jetpack framework for streamlined screen transitions, back stack management, type-safe data passing, and deep linking using navigation graphs.

Learn to build navigation graphs to visually map app screens and type-safe routes in Android, manage back stack, and securely pass data using Jetpack Navigation Component and Safe Args.

Master advanced mobile navigation: create independent tab back stacks, share data across screens, ensure type-safe routing, and build seamless, professional user experiences in Android apps.

Understand authentication and authorization, common login flows, session and token management, token storage tradeoffs, expiration, renewal, and revocation for secure user access.

Learn to build secure authentication: handle user registration, hash passwords, manage tokens, and protect app resources using robust state management and navigation best practices.

Learn to keep Android apps responsive by using Kotlin Coroutines for safe, efficient asynchronous tasks, lifecycle management, and avoiding classic threading pitfalls.

Master Kotlin coroutines to efficiently handle background tasks, UI state, parallel execution, progress tracking, and cancellation in robust Android applications.

Learn how Android apps use RESTful APIs to communicate with servers, handle JSON data, enforce API contracts, and prevent common networking and data parsing errors.

Learn to configure Retrofit in Android: set up base URL, OkHttpClient, Moshi converter, API interface, and integrate network calls with ViewModel using coroutines for safe data fetching.

Learn to safely parse JSON data into Kotlin objects using Moshi, handle nested structures, nullable fields, and custom adapters for real-world API integration.

Learn how the repository pattern separates UI and data logic, enabling maintainable, testable, and offline-capable applications through clean architecture and abstraction.

Learn to build a repository using the Repository Pattern to separate data logic, enable caching, support offline access, and simplify testing in modern applications.

Explore how relational databases and Android's Room ORM organize, store, and safely manage app data using tables, keys, transactions, and schema migrations.

Learn to set up Room database in Android: define entities, DAOs, singleton database, and configure schema for persistent, reliable, and structured local data storage.

Learn to perform Room database CRUD operations, build reactive data flows, and connect DAOs to repositories, ViewModels, and UI for secure and offline-first Android apps.

Dive deep into RecyclerView: master efficient list updates with ListAdapter and DiffUtil, add gestures like swipe-to-delete, and boost UI performance with modern list best practices.

Discover Jetpack Compose Lists: use LazyColumn and LazyRow to build efficient, reactive lists with minimal code by adopting a declarative, state-driven UI approach in Android.

Learn to build efficient, scrollable lists in Jetpack Compose using LazyColumn, optimize performance with keys, and simplify list UI compared to RecyclerView.

Discover strategies for effective form validation, focusing on where, when, and how to validate data for a seamless, secure, and user-friendly experience.

Learn to implement real-time, accessible form validation in Android apps, ensuring smooth user feedback, data integrity, and an optimized user experience with best practices.

Discover how to design resilient UIs by handling errors, managing loading states, providing recovery actions, clear messaging, and basic observability for a reliable user experience.

Learn robust error handling and validation in Android Kotlin apps using sealed classes for clear state modeling, user-friendly error messages, and safe async network operations.

Learn to test Android data layers using unit and instrumented tests, fakes, in-memory Room DBs, and proper separation for reliable, maintainable state and business logic.

[PLACEHOLDER: Brief summary congratulating learners and highlighting what they can now do with the skills gained in this course.]

Discover the shift to declarative UI with Jetpack Compose, course goals, required skills, environment setup, and key terminology for modern Android development.

Learn Jetpack Compose by building UIs with @Composable functions, understanding state, recomposition, and the Composition, Layout, Drawing phases for efficient Android apps.

Learn to build composable UI in Jetpack Compose by creating reusable functions, using declarative layouts, and applying Material Design components for modern Android apps.

Master Jetpack Compose's core layouts—Column, Row, and Box—to build responsive, reusable, and complex Android UIs using modifiers for custom alignment, spacing, and styling.

Master state management in Jetpack Compose: use remember and mutableStateOf, apply state hoisting, and create clean, reusable stateless UI components that react to state changes.

Explore Material Design 3 in Jetpack Compose, using MaterialTheme for unified color, typography, and shapes, dynamic color, and tonal elevation for modern, personalized UIs.

Learn to apply Material Design 3 in Jetpack Compose apps, using dynamic theming, consistent layouts, and accessible, modern UI components for native Android experiences.

Learn to implement robust, type-safe navigation in Jetpack Compose using NavController, NavHost, and bottom navigation for seamless multi-screen Android app experiences.

Master advanced Jetpack Compose: custom layouts, side effects (LaunchedEffect, DisposableEffect), lifecycle management, state handling, and cleanup for performant, robust UIs.

Learn to connect Jetpack Compose UIs to ViewModel with StateFlow, using unidirectional data flow and MVVM for testable, resilient Android app architecture.

Learn to build efficient, responsive lists and grids in Jetpack Compose using Lazy layouts like LazyColumn and LazyGrid for optimized, scalable UI with advanced features like sticky headers.

Understand background work categories in Android and learn how to use WorkManager with constraints for reliable, battery-friendly deferrable task execution.

Learn how to use Android's WorkManager to schedule, run, and observe reliable background tasks, ensuring completion even if the app is closed or device restarts.

Master advanced Android background processing with WorkManager: chain tasks, pass data between workers, handle constraints, and build robust workflows for reliable app operations.

Understand Android notifications: their anatomy, action buttons, notification channels, importance levels, and how to design valuable, user-friendly alerts.

Learn to create and manage Android notifications: channels, permissions, intents, and visual styles to engage users safely and effectively in modern apps.

Learn Dependency Injection principles to decouple Android classes, improve modularity, testability, and scalability, and manage dependencies effectively using Hilt.

Learn how to set up and configure Hilt for dependency injection in Android apps, enabling scalable, testable code with automated dependency management using annotations.

Master advanced Hilt patterns: use modules, @Binds, @Provides, and qualifiers to resolve dependency injection challenges in scalable Android apps.

Learn Android testing strategy: use a Testing Pyramid with many unit tests, some integration tests, and few UI tests to ensure robust, maintainable, and scalable apps.

Learn to write fast, reliable unit tests for ViewModels using JUnit in Android. Master setup with @Before, the AAA pattern, and boundary testing to ensure robust, maintainable code.

Learn to isolate unit tests using Fakes and Mocks. Use MockK to simulate APIs and databases, stub behaviors, and verify logic, enabling fast, reliable, and maintainable testing.

Learn to write automated UI tests for Jetpack Compose apps using test tags, JUnit rules, user interaction emulation, and smart async waits for robust user experience verification.

Master advanced Android testing by validating coroutines, Room databases, and Kotlin Flows using Turbine for reliable asynchronous and reactive app behaviors.

Explore the evolution, benefits, and trade-offs of modern cross-platform mobile development, balancing code reuse efficiency with authentic user experiences.

Learn to build stable, scalable Android apps using Jetpack architecture, professional workflows, code quality metrics, and advanced diagnostics in Android Studio.

Explore strategies for cross-platform app development by comparing React Native, Flutter, and Kotlin Multiplatform to balance code reuse, native feel, and project requirements.

Learn to structure Kotlin Multiplatform projects, share logic across iOS/Android, and bridge native APIs using expect/actual contracts for robust, platform-optimized apps.

Learn to set up a Kotlin Multiplatform (KMP) project by configuring dependencies, linking shared modules, and creating shared cross-platform logic for Android and iOS.

Learn to build shared business logic with serializable models, SM-2 spaced repetition, and platform bridging for identical study logic on Android & iOS.

Learn to configure Ktor networking in a KMP project, fetch JSON data for decks and cards, parse it with serialization, and verify integration with tests on Android and iOS.

Learn to link a KMP shared module with Android, configure Koin for dependency injection, and implement shared UI and ViewModel across Android and iOS using Compose Multiplatform.

Master responsive design by using fluid layouts, constraints, window size classes, and adaptive UI patterns for seamless, future-proof apps across all device types and sizes.

Learn to build adaptive UIs with Kotlin Multiplatform by detecting device window size and implementing responsive layouts that switch between lists and grids for phones and tablets.

Learn to optimize apps for tablets and foldables by implementing adaptive master-detail layouts, responsive UI, 3D card flip animations, state persistence, and real-time progress.

Master Wear OS fundamentals: constraint-driven design, creating glanceable UIs and Tiles, and efficient watch-phone data sync using the Wearable Data Layer API and specialized clients.

Learn to build a native Wear OS app for Recall, using Compose, ScalingLazyColumn, and system integrations like health sensors, complications, and tiles for an optimized watch experience.

Master data-driven performance optimization: use profilers to find bottlenecks, prevent app lag, optimize UI with Compose, batch updates, and accelerate startup with lazy initialization.

Practice profiling and optimizing your app: implement Room-based persistence, enable offline support, profile performance, fix N+1 queries and memory leaks, and polish UI with shimmer loading.

Discover how to use Compose Multiplatform's semantics to build accessible apps for all, leveraging best practices and rigorous testing for inclusive development.

Learn to internationalize apps by extracting strings, implementing plural support, and adding Spanish translation for dynamic, locale-aware UIs in Compose Multiplatform.

Learn to enhance app accessibility by merging semantics, adding state/context for screen readers, and optimizing navigation for users with vision impairments.

Learn how to secure apps with defense in depth, encrypted storage, protected data in transit, logic flaw prevention, and automated security in the CI/CD pipeline.

Learn how to prepare Android and iOS apps for production release, including signing, optimization, version sync, and archiving for Play Store and App Store deployment.

Learn to automate Android app packaging and release using Fastlane, ensuring reproducible, optimized, and CI/CD-friendly Play Store-ready builds with a single command.

Learn to monitor and analyze your KMP app by integrating Firebase Analytics, Crashlytics, and Remote Config, mastering platform-specific implementations and async patterns on Android and iOS.

Congratulations on completing the course!

Now that you've learned the benefits of Version Control and gotten Git installed, it's time you learn how to create a repository.