Java

• Java Core SDK
  • Collections
  • Reflection API
• Concurrency
  • Java Memory Model
• JVM
  • Garbage Collector

Kotlin

• Basics
• Extensions
• Collections
• Coroutines
• Channels & Flows

Android System

• Android Internals:
  • Zygote
  • Dalvik & ART
  • APK file
• Android Versions
  • Android 5/5.1
  • Android 6
  • Android 7/7.1
  • Android 8/8.1
  • Android 9
  • Android 10
  • Android 11

Android SDK

• Activity & Intent
  • Multiwindow
  • Launch mode
  • Intent flags
• Fragments
• Services
• Permissions
• Android Manifest
• Notifications, Channels
• MediaSessions
• Widgets
• Resources
• Database, Preferences
• File system
• Security

Android UI

• App styling
• Views:
  • Custom views
  • View Outline
  • Android Canvas
• Animations:
  • Android Transitions
  • ValueAnimator, ObjectAnimator
• Gestures
• Material Components & Layouts:
  • CoordinatorLayout, AppBarLayout
  • ConstraintLayout, MotionLayout
• RecyclerView:
  • Adapter:
  • ItemDecoration:
  • SnapHelper:
  • LayoutManager:
  • ItemAnimator:
  • DiffUtil:
  • State Restoration Policy:

App Architecture

• SOLID
• GoF patterns
• Clean Architecture
• MVP
• MVVM
• MVI/Elm

Jetpack

• App Startup
• Compose
• Datastore
• LiveData
• Navigation
• Paging library
• ViewModel
• WorkManager
• Room

Firebase

• Crashlytics
• Realtime database
• Messaging
• Remote config

Libraries & SDKs

• Android Developer Arsenal
• Dagger&Hilt
• RxJava
• Retrofit&OkHttp

Testing & Debug

• Unit-testing
• UI-testing
• Debug tools
• Profiling & Optimization

Tools

• Android Studio
• Gradle
• Annotation Processing
• Code protection
• Code Quality
• App Bundle
• Dynamic Feature Modules

Mobile DevOps

• CI&CD
• Linux administration
• Docker-containers
• Testing farm

Android NDK

• C++ language
  • Syntax
• C++ Standart library:
  • Data structures: vector, map, etc
  • Work with strings
  • Math operations
  • Date and time
• Android NDK
  • JNI
  • CMake
• Libraries&Projects
• Misc
  • Files
  • Database
  • Images
  • Audio
  • Fonts

Misc

• Interview Questions
• Data structures
• [Algorithms]

Android Blogs & Resources

Blogs

• https://android-developers.googleblog.com
• https://medium.com/androiddevelopers
• https://blog.stylingandroid.com
• https://proandroiddev.com
• https://medium.com/mindorks
• https://android.jlelse.eu/
• https://infinum.com/handbook/books/android
• https://mindorks.com/

Digests

• https://androidweekly.net
• https://android-arsenal.com
• https://androidexample365.com