Android developer course

Lesson 1 • Creating and Running Your First Project

Generate a new Android project using a template and run it on an emulator. This confirms the environment is correctly configured end-to-end.

Lesson 2 • Understanding the Android Studio IDE

Navigate Android Studio's layout, tool windows, and menus. Familiarity with the IDE accelerates every development task in the course.

Lesson 3 • Using Physical Devices for Testing

Enable USB debugging and deploy apps to real Android hardware. Physical device testing reveals performance and hardware-specific behaviours.

Lesson 1 • Functions and Lambdas

Define named functions, default parameters, and higher-order functions with lambdas. Functional patterns are used extensively in Android APIs.

Lesson 2 • Kotlin Syntax and Basic Types

Cover variables, data types, operators, and control flow in Kotlin. These primitives underpin every Android class and function written later.

Lesson 3 • Null Safety and Smart Casts

Eliminate NullPointerExceptions using Kotlin's nullable types and safe operators. Null safety is critical for writing crash-free Android apps.

Lesson 4 • Object-Oriented Programming in Kotlin

Model app data using classes, inheritance, interfaces, and data classes. OOP structures form the backbone of Android architecture components.

Lesson 1 • XML Layout System Overview

Understand how Android inflates XML layouts into View hierarchies at runtime. This mental model is required before building any screen.

Lesson 2 • RecyclerView for List Displays

Display scrollable lists efficiently using RecyclerView with an Adapter and ViewHolder. RecyclerView is the standard pattern for any list-based UI.

Lesson 3 • Essential UI Widgets

Implement TextViews, Buttons, EditTexts, ImageViews, and CheckBoxes. These widgets form the building blocks of nearly every Android screen.

Lesson 4 • Responsive Design and Resources

Use resource qualifiers, dp/sp units, and dimension files to support multiple screen sizes. Responsive design ensures a consistent experience across devices.

Lesson 1 • Fragments and the Fragment Lifecycle

Create reusable UI modules using Fragments and understand their lifecycle relative to the host Activity. Fragments enable flexible, modular screen design.

Lesson 2 • Activity Lifecycle and State Management

Trace the Activity lifecycle from creation to destruction and save UI state across rotations. Lifecycle awareness prevents data loss and memory leaks.

Lesson 3 • Jetpack Navigation Component

Define app navigation graphs and navigate between destinations using the Navigation component. This standardises back-stack handling across the entire app.

Lesson 1 • Advanced Room Queries and Relations

Write complex queries and model one-to-many and many-to-many relationships in Room. Relational data modelling is essential for real-world app databases.

Lesson 2 • SharedPreferences for Simple Data

Read and write key-value pairs using SharedPreferences and DataStore. These APIs handle lightweight settings and user preferences efficiently.

Lesson 3 • Room Database Fundamentals

Define entities, DAOs, and a Room database to persist structured data with SQLite. Room eliminates boilerplate and provides compile-time query verification.

Lesson 1 • MVVM Architecture Pattern

Separate UI, business logic, and data layers using the Model-View-ViewModel pattern. MVVM is the recommended architecture for all modern Android apps.

Lesson 2 • ViewModel and LiveData

Expose UI state from ViewModel using LiveData and observe changes in Fragments. This decouples the UI from data sources and survives configuration changes.

Lesson 3 • Kotlin Flow for Reactive Streams

Emit and collect streams of data using Flow, StateFlow, and SharedFlow. Flow replaces LiveData in many scenarios and integrates with Room and Retrofit.

Lesson 4 • Kotlin Coroutines for Async Work

Replace callbacks with coroutines using suspend functions, scopes, and dispatchers. Coroutines simplify asynchronous code and integrate natively with Jetpack.

Lesson 1 • Error Handling and Network State

Detect network failures, parse error bodies, and expose loading states to the UI. Robust error handling prevents crashes and improves user experience.

Lesson 2 • Retrofit Setup and API Calls

Configure Retrofit with a base URL, converter factory, and service interface to make API calls. Retrofit is the industry-standard HTTP client for Android.

Lesson 3 • Image Loading with Coil and Glide

Load and cache remote images efficiently using Coil or Glide. Image loading libraries handle caching, placeholders, and memory management automatically.

Lesson 4 • JSON Parsing with Gson and Moshi

Deserialise JSON responses into Kotlin data classes using Gson and Moshi converters. Accurate parsing is critical for displaying correct data in the UI.

Lesson 1 • UI Testing with Espresso

Automate UI interactions and verify screen states using Espresso. UI tests validate end-to-end user flows on real devices and emulators.

Lesson 2 • App Signing and Release Build

Generate a signed release APK or AAB and configure ProGuard for code shrinking. Signing and shrinking are mandatory steps before any store submission.

Lesson 3 • Publishing to the Google Play Store

Create a Play Console listing, upload the AAB, and complete the store review process. Understanding the publishing pipeline is essential for shipping real apps.

Lesson 4 • Debugging Tools and Techniques

Use the Android debugger, Logcat, Layout Inspector, and Profiler to diagnose issues. Systematic debugging reduces time spent resolving production defects.