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🌳 SKILL TREE

Android Developer

Roadmap to building native Android applications using Kotlin, Jetpack Compose, architecture, APIs, storage, testing, and Play Store release practices.

16Skills
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🎯

Kotlin and Android Foundations

CORE

Complete the Kotlin and Android Foundations branches before moving ahead.

📘

Kotlin Syntax and OOP

CORE

Learn variables, functions, classes, data classes, collections, null safety, exceptions, and idiomatic Kotlin.

📘

Coroutines and Async Work

CORE

Use suspend functions, coroutine scopes, dispatchers, flows, and structured concurrency for responsive apps.

📘

Android App Basics

CORE

Understand activities, lifecycle, intents, permissions, resources, Gradle, manifests, and app structure.

🏆

Project: Unit Converter App

⚡ ADV

Build a simple Kotlin app with multiple screens, lifecycle-safe state, input validation, and polished UI.

🎯

Modern Android UI

CORE

Complete the Modern Android UI branches before moving ahead.

📘

XML Views and Layouts

CORE

Use ConstraintLayout, RecyclerView, ViewBinding, themes, resources, and responsive layouts.

📘

Jetpack Compose

CORE

Build declarative UI with composables, modifiers, state hoisting, navigation, forms, lists, and theming.

📘

Practice: Compose Screen Rebuild

⚡ ADV

Rebuild one real app screen in Compose, handle loading/error/empty states, and test it on two screen sizes.

🏆

Project: Expense Tracker UI

⚡ ADV

Create a Compose UI with transactions, filters, charts, empty states, and local preview data.

🎯

Architecture, APIs, and Data

CORE

Complete the Architecture, APIs, and Data branches before moving ahead.

📘

MVVM and App Architecture

CORE

Use ViewModel, repository pattern, UI state, dependency injection, navigation, and clean module boundaries.

📘

Networking and APIs

CORE

Call REST APIs, parse JSON, model errors, cache data, retry safely, and keep secrets out of the client.

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Room, DataStore, and Offline UX

⚡ ADV

Store structured data, preferences, cache API responses, handle migrations, and support offline-first flows.

🏆

Project: Offline News Reader

⚡ ADV

Build a news app with API fetch, Room cache, Compose UI, saved articles, search, and error recovery.

🎯

Testing, Performance, and Release

CORE

Complete the Testing, Performance, and Release branches before moving ahead.

📘

Testing Android Apps

⚡ ADV

Write unit tests, UI tests, ViewModel tests, fake repositories, and regression checks for core user flows.

📘

Performance and Security

⚡ ADV

Profile startup, memory, jank, battery, secure storage, permissions, network security config, and release signing.

📘

Project: Play-Ready Android App

⚡ ADV

Ship a polished app with offline data, tests, release build, privacy notes, screenshots, and a Play Store-style listing.

🏆

Project: Production Habit Tracker

⚡ ADV

Build and test a habit tracker with local persistence, notifications, analytics-ready events, release build, and documentation.