A complete roadmap to learn Android app development from scratch, including official docs, resources, and hands-on projects.
- Programming fundamentals (variables, loops, OOP)
- Recommended language: Kotlin
- Kotlin Official Docs: https://kotlinlang.org/docs/home.html
- Java (optional): https://docs.oracle.com/javase/tutorial/
- Console-based calculator
- Android Studio setup
- Project structure
- Activities & Lifecycle
- Layouts (XML)
- Views (TextView, Button, ImageView)
- https://developer.android.com/guide/components/activities/intro-activities
- https://developer.android.com/guide/topics/ui/declaring-layout
- Android Basics in Kotlin: https://developer.android.com/courses/android-basics-kotlin/course
- Greeting App
- Simple Calculator App
- Login UI Screen
- ConstraintLayout
- RecyclerView
- Adapters
- Navigation Component
- Material Design
- https://developer.android.com/jetpack/androidx/releases/recyclerview
- https://developer.android.com/guide/navigation
- To-Do List App
- Notes App (UI only)
- SharedPreferences
- SQLite
- Room Database
- https://developer.android.com/training/data-storage
- https://developer.android.com/training/data-storage/room
- Notes App (with persistence)
- Expense Tracker
- REST APIs
- JSON Parsing
- Retrofit
- Coroutines
- Weather App
- News App (API based)
- MVVM Architecture
- ViewModel
- LiveData / StateFlow
- Dependency Injection (Hilt)
- Clean Architecture Notes App
- Compose Basics
- State Management
- Navigation in Compose
- Compose-based ToDo App
- Firebase (Auth, Firestore)
- Push Notifications
- Background Services
- WorkManager
- Chat App
- E-commerce App
- Unit Testing
- UI Testing (Espresso)
- Debugging tools
- APK vs AAB
- Play Store Publishing
- App Signing
- Social Media App
- Food Delivery App
- Full E-commerce App
- Android Studio
- Git & GitHub
- Postman
- Firebase
- Build projects alongside learning
- Read official docs regularly
- Focus on problem-solving
- Practice UI cloning (real apps)
| Phase | Duration |
|---|---|
| Basics | 2–3 weeks |
| Android Fundamentals | 3–4 weeks |
| Intermediate | 4–6 weeks |
| Advanced | 6–8 weeks |
By the end of this roadmap, you should be able to:
- Build real-world Android apps
- Use modern architecture
- Publish apps to Play Store
Happy Coding! 🎉
A complete roadmap to learn Android app development from scratch, including official docs, resources, and hands-on projects.
- Programming fundamentals (variables, loops, OOP)
- Start with Java (for Android basics & legacy understanding)
- Then move to Kotlin (modern Android development)
- Java Docs: https://docs.oracle.com/javase/tutorial/
- Kotlin Official Docs: https://kotlinlang.org/docs/home.html
- Console-based calculator (Java → then Kotlin)
- Android Studio setup
- Project structure
- Activities & Lifecycle
- Layouts (XML)
- Views (TextView, Button, ImageView)
- Building apps using XML + Java (initial phase)
- Understanding legacy Android codebases
- https://developer.android.com/guide/components/activities/intro-activities
- https://developer.android.com/guide/topics/ui/declaring-layout
- Android Basics in Kotlin: https://developer.android.com/courses/android-basics-kotlin/course
- Greeting App (XML + Java)
- Simple Calculator App (XML + Java)
- Login UI Screen (XML + Java)
- ConstraintLayout
- RecyclerView
- Adapters
- Navigation Component
- Material Design
- Continue building with XML + Java
- https://developer.android.com/jetpack/androidx/releases/recyclerview
- https://developer.android.com/guide/navigation
- To-Do List App (XML + Java)
- Notes App (UI only, XML + Java)
- SharedPreferences
- SQLite
- Room Database
- https://developer.android.com/training/data-storage
- https://developer.android.com/training/data-storage/room
- Notes App (with persistence)
- Expense Tracker
- REST APIs
- JSON Parsing
- Retrofit
- Coroutines
- Weather App
- News App (API based)
- Transition from Java → Kotlin
- MVVM Architecture
- ViewModel
- LiveData / StateFlow
- Dependency Injection (Hilt)
- Clean Architecture Notes App (Kotlin)
- Fully switch to Kotlin
- Compose Basics
- State Management
- Navigation in Compose
- Compose-based ToDo App (Kotlin)
- Firebase (Auth, Firestore)
- Push Notifications
- Background Services
- WorkManager
- Chat App
- E-commerce App
- Unit Testing
- UI Testing (Espresso)
- Debugging tools
- APK vs AAB
- Play Store Publishing
- App Signing
- Social Media App
- Food Delivery App
- Full E-commerce App
- Android Studio
- Git & GitHub
- Postman
- Firebase
- Build projects alongside learning
- Read official docs regularly
- Focus on problem-solving
- Practice UI cloning (real apps)
| Phase | Duration |
|---|---|
| Basics | 2–3 weeks |
| Android Fundamentals | 3–4 weeks |
| Intermediate | 4–6 weeks |
| Advanced | 6–8 weeks |
By the end of this roadmap, you should be able to:
- Build real-world Android apps
- Use modern architecture
- Publish apps to Play Store
Happy Coding! 🎉