Android Developer Roadmap

Phase	Main Topic	Content & Tools	Product Goal
1	Foundation & Tools	Kotlin, Java Android Studio Git & GitHub/GitLab Gradle Build System	Set up a "Hello World" Android project and push it to a Git repository.
2	Core Android Components	Activities & Fragments Lifecycles Intents & Services AndroidManifest.xml	Create an app with two activities that can pass data between each other using Intents.
3	Building the User Interface (UI)	Jetpack Compose State Management XML Layouts & Views RecyclerView	Build a simple UI screen using both Jetpack Compose and XML to see the differences.
4	App Architecture	MVVM Jetpack ViewModel LiveData & StateFlow Repository Pattern	Refactor a simple app to use the MVVM architecture with a ViewModel.
5	Data Persistence	Room Database Jetpack DataStore SharedPreferences	Create a basic note-taking app that saves notes locally using the Room database.
6	Networking	Retrofit & OkHttp JSON Serialization Ktor Client	Build an app that fetches and displays data from a public REST API using Retrofit.
7	Concurrency	Kotlin Coroutines Kotlin Flow RxJava / RxKotlin	Modify the networking app to handle API calls asynchronously using Kotlin Coroutines.
8	Dependency Injection	Hilt (Jetpack) Koin Dagger 2	Integrate Hilt to provide dependencies (like a Repository) to your ViewModel.
9	Testing	Unit Tests Integration Tests UI Tests	Write a simple unit test for a function in your ViewModel.
10	Security	Secure Data Storage Network Security Code Obfuscation	Learn to store an API key securely instead of hardcoding it.
11	Distribution & CI/CD	App Bundles & Signing Google Play Console CI/CD	Generate a signed App Bundle for your application, ready for upload.
12	Keep Learning	Official Documentation Performance Optimization Modularization Kotlin Multiplatform	Profile your app's performance using Android Studio's Profiler and identify a bottleneck.