diff --git a/README.md b/README.md
index 4bfc5ce..f50b1b3 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,262 @@ In addition, **you don't need to learn everything from this roadmap**. So we rec
+
+ ## Content list
+- - [ ] **Application Fundamentals**
+ - - [ ] Languages
+ - - [ ] Kotlin
+ - - [ ] Java
+ - - [ ] C++ (JNI)
+ - - [ ] Android Package
+ - - [ ] APK
+ - - [ ] AAB
+- - [ ] **Android Operating System**
+ - - [ ] Multi-User Linux
+ - - [ ] File Permissions
+ - - [ ] Resource Isolations
+ - - [ ] Process Management
+- - [ ] **Android Platform Architecture**
+ - - [ ] The Linux Kernel
+ - - [ ] Hardware Abstraction Layer
+ - - [ ] Android Runtime
+ - - [ ] Native Libraries
+ - - [ ] Java API Framework
+ - - [ ] System Apps
+- - [ ] **App Manifest**
+ - - [ ] Package
+ - - [ ] Application ID
+- - [ ] **App Components**
+ - - [ ] Activity (detailed later)
+ - - [ ] Service
+ - - [ ] Broadcast Receiver
+ - - [ ] Content Provider
+ - - [ ] Intent
+ - - [ ] Intent Filters
+ - - [ ] Explicit Intents
+ - - [ ] Implicit Intents
+- - [ ] **App Architecture**
+- - [ ] **App Entry Points**
+ - - [ ] Activities
+ - - [ ] Activity Lifecycles
+ - - [ ] Activity State Changes
+ - - [ ] Task and Back Stack
+ - - [ ] Parcelables and Bundles
+ - - [ ] App Shortcuts
+- - [ ] **App Navigation**
+ - - [ ] Navigation Component
+ - - [ ] Navigation Graph
+ - - [ ] Global Actions
+ - - [ ] Destinations
+ - - [ ] DeepLink
+ - - [ ] Fragments
+ - - [ ] DialogFragment
+ - - [ ] BottomSheetDialogFragment
+ - - [ ] Fragment Lifecycles
+ - - [ ] Fragment State Changes
+ - - [ ] Fragment Manager
+ - - [ ] Fragment Transactions
+ - - [ ] App Links
+ - - [ ] TabLayout
+ - - [ ] ViewPager
+ - - [ ] ViewPager2
+ - - [ ] Custom Back Navigation
+- - [ ] **App Startup**
+- - [ ] **Dependency Injection** (detailed later)
+- - [ ] **Architecture Components**
+ - - [ ] UI Layer
+ - - [ ] ViewBinding
+ - - [ ] DataBinding
+ - - [ ] Lifecycle
+ - - [ ] ViewModel
+ - - [ ] LiveData
+ - - [ ] Paging
+ - - [ ] Data Layer
+ - - [ ] Data Store
+ - - [ ] WorkManager
+- - [ ] **Design Patterns**
+ - - [ ] Builder Pattern
+ - - [ ] Factory Pattern
+ - - [ ] Dependency Injection
+ - - [ ] Dagger
+ - - [ ] Hilt
+ - - [ ] Koin
+ - - [ ] Kodein
+ - - [ ] Repository Pattern
+ - - [ ] Observer Pattern
+ - - [ ] Flow
+ - - [ ] RxJava/RxKotlin
+ - - [ ] LiveData
+- - [ ] **Architecture**
+ - - [ ] MVVM
+ - - [ ] MVP
+ - - [ ] MVI
+ - - [ ] MVC
+ - - [ ] Clean Architecture
+- - [ ] **Network**
+ - - [ ] OkHttp
+ - - [ ] Interceptor
+ - - [ ] Okio
+ - - [ ] Retrofit
+ - - [ ] Ktor
+ - - [ ] Volley
+ - - [ ] Apollo-Android
+- - [ ] **Image Loading**
+ - - [ ] Glide
+ - - [ ] Fresco
+ - - [ ] Coil
+ - - [ ] Picasso
+- - [ ] **Local Storage**
+ - - [ ] SQLite
+ - - [ ] SQLDelight
+ - - [ ] Room
+ - - [ ] DataStore
+ - - [ ] Realm
+ - - [ ] SharedPreferences
+- - [ ] **Asynchronous**
+ - - [ ] Coroutines
+ - - [ ] RxJava/RxKotlin
+ - - [ ] Thread
+ - - [ ] WorkManager
+- - [ ] **User Interface**
+ - - [ ] Layouts
+ - - [ ] ConstraintLayout
+ - - [ ] MotionLayout
+ - - [ ] LinearLayout
+ - - [ ] FrameLayout
+ - - [ ] Material
+ - - [ ] RecyclerView
+ - - [ ] Design Guides
+ - - [ ] Material
+ - - [ ] Material You
+ - - [ ] Neumorphism
+ - - [ ] Styles
+ - - [ ] Light Theme
+ - - [ ] Dark Theme
+ - - [ ] Message
+ - - [ ] Toast
+ - - [ ] Snackbar
+ - - [ ] Notification
+ - - [ ] Animation
+ - - [ ] ValueAnimator
+ - - [ ] ObjectAnimator
+ - - [ ] Lottie
+ - - [ ] Material Motion
+- - [ ] **Compose UI:**
+ - - [ ] Recomposition
+ - - [ ] Snapshot
+ - - [ ] State:
+ - - [ ] State Hoisting
+ - - [ ] MutableState
+ - - [ ] remember
+ - - [ ] rememberSaveable
+ - - [ ] Side-Effects:
+ - - [ ] LaunchedEffect
+ - - [ ] DisposableEffect
+ - - [ ] produceState
+ - - [ ] derivedStateOf
+ - - [ ] snapshotFlow
+ - - [ ] Theming:
+ - - [ ] Material
+ - - [ ] Color
+ - - [ ] Typography
+ - - [ ] Shape
+ - - [ ] Custom
+ - - [ ] Dimens
+ - - [ ] Factories
+ - - [ ] Data
+ - - [ ] Modifier:
+ - - [ ] Modifier Order
+ - - [ ] Chaining
+ - - [ ] Composed Modifier
+ - - [ ] Layout:
+ - - [ ] Column
+ - - [ ] Box
+ - - [ ] Row
+ - - [ ] ConstraintLayout
+ - - [ ] List:
+ - - [ ] LazyColumn
+ - - [ ] LazyRow
+ - - [ ] LazyVerticalGrid
+ - - [ ] LazyPagingItems
+ - - [ ] Image:
+ - - [ ] Icon
+ - - [ ] Image
+ - - [ ] coil-compose
+ - - [ ] Landscapist
+ - - [ ] Text:
+ - - [ ] TextField
+ - - [ ] OutlinedTextField
+ - - [ ] ClickableText
+ - - [ ] Graphics:
+ - - [ ] Surface
+ - - [ ] Canvas
+ - - [ ] Gestures:
+ - - [ ] Scrolling
+ - - [ ] Dragging
+ - - [ ] Swiping
+ - - [ ] Zooming
+ - - [ ] Animation:
+ - - [ ] AnimatedVisibility
+ - - [ ] AnimatedContent
+ - - [ ] Crossfade
+ - - [ ] rememberInfiniteTransition
+ - - [ ] animateContentSize
+ - - [ ] updateTransition
+ - - [ ] animate*AsState
+ - - [ ] AnimationState
+ - - [ ] animate
+ - - [ ] Animatable
+ - - [ ] Animation
+ - - [ ] CompositionLocal:
+ - - [ ] CompositionLocalProvider
+ - - [ ] compositionLocalOf
+ - - [ ] staticCompositionLocalOf
+- - [ ] **Service:**
+ - - [ ] Google:
+ - - [ ] Google Play Services
+ - - [ ] Google Maps
+ - - [ ] Firebase:
+ - - [ ] Authentication
+ - - [ ] Crashlytics
+ - - [ ] Remote Config
+ - - [ ] Cloud Messaging
+ - - [ ] FiresStore
+ - - [ ] Realtime Database
+ - - [ ] Advertisements:
+ - - [ ] Google AdMob
+ - - [ ] Meta Audience Network
+ - - [ ] MoPub
+ - - [ ] **Code Analysis & Testing**:
+ - - [ ] Linter:
+ - - [ ] Ktlint
+ - - [ ] Detekt
+ - - [ ] Android Lint
+ - - [ ] Debugging:
+ - - [ ] Timber
+ - - [ ] LeakCanary
+ - - [ ] Stetho
+ - - [ ] Chucker
+ - - [ ] Unit Testing:
+ - - [ ] Unit Test:
+ - - [ ] JUnit
+ - - [ ] Kluent
+ - - [ ] Mockk
+ - - [ ] Android Test:
+ - - [ ] Robolectric
+ - - [ ] Espresso
+ - - [ ] Kaspresso
+ - - [ ] Benchmark
+- - [ ] **CI/CD**:
+ - - [ ] GitHub Actions
+ - - [ ] Jenkins
+ - - [ ] Travis CI
+ - - [ ] Circle CI
+ - - [ ] Bitrise
+- - [ ] **QA & App Publishing**:
+ - - [ ] Firebase App Distribution
+ - - [ ] Google Play
+
## ✍️ Articles
@@ -56,260 +312,6 @@ If you're interested in building a robust chat feature, which is an easy-to-use,
## 📱 Demo Application
This project includes a demo project which shows the roadmap image. You can download the latest APK on the [Releases](https://github.com/skydoves/android-developer-roadmap/releases).
-
-- Application Fundamentals
- - Languages
- - Kotlin
- - Java
- - C++ (JNI)
- - Android Package
- - APK
- - AAB
-- Android Operating System
- - Multi-User Linux
- - File Permissions
- - Resource Isolations
- - Process Management
-- Android Platform Architecture
- - The Linux Kernel
- - Hardware Abstraction Layer
- - Android Runtime
- - Native Libraries
- - Java API Framework
- - System Apps
-- App Manifest
- - Package
- - Application ID
-- App Components
- - Activity (detailed later)
- - Service
- - Broadcast Receiver
- - Content Provider
- - Intent
- - Intent Filters
- - Explicit Intents
- - Implicit Intents
-- App Architecture
-- App Entry Points
- - Activities
- - Activity Lifecycles
- - Activity State Changes
- - Task and Back Stack
- - Parcelables and Bundles
- - App Shortcuts
-- App Navigation
- - Navigation Component
- - Navigation Graph
- - Global Actions
- - Destinations
- - DeepLink
- - Fragments
- - DialogFragment
- - BottomSheetDialogFragment
- - Fragment Lifecycles
- - Fragment State Changes
- - Fragment Manager
- - Fragment Transactions
- - App Links
- - TabLayout
- - ViewPager
- - ViewPager2
- - Custom Back Navigation
-- App Startup
-- Dependency Injection (detailed later)
-- Architecture Components
- - UI Layer
- - ViewBinding
- - DataBinding
- - Lifecycle
- - ViewModel
- - LiveData
- - Paging
- - Data Layer
- - Data Store
- - WorkManager
-- Design Patterns
- - Builder Pattern
- - Factory Pattern
- - Dependency Injection
- - Dagger
- - Hilt
- - Koin
- - Kodein
- - Repository Pattern
- - Observer Pattern
- - Flow
- - RxJava/RxKotlin
- - LiveData
-- Architecture
- - MVVM
- - MVP
- - MVI
- - MVC
- - Clean Architecture
-- Network
- - OkHttp
- - Interceptor
- - Okio
- - Retrofit
- - Ktor
- - Volley
- - Apollo-Android
-- Image Loading
- - Glide
- - Fresco
- - Coil
- - Picasso
-- Local Storage
- - SQLite
- - SQLDelight
- - Room
- - DataStore
- - Realm
- - SharedPreferences
-- Asynchronous
- - Coroutines
- - RxJava/RxKotlin
- - Thread
- - WorkManager
-- User Interface
- - Layouts
- - ConstraintLayout
- - MotionLayout
- - LinearLayout
- - FrameLayout
- - Material
- - RecyclerView
- - Design Guides
- - Material
- - Material You
- - Neumorphism
- - Styles
- - Light Theme
- - Dark Theme
- - Message
- - Toast
- - Snackbar
- - Notification
- - Animation
- - ValueAnimator
- - ObjectAnimator
- - Lottie
- - Material Motion
-- Compose UI:
- - Recomposition
- - Snapshot
- - State:
- - State Hoisting
- - MutableState
- - remember
- - rememberSaveable
- - Side-Effects:
- - LaunchedEffect
- - DisposableEffect
- - produceState
- - derivedStateOf
- - snapshotFlow
- - Theming:
- - Material
- - Color
- - Typography
- - Shape
- - Custom
- - Dimens
- - Factories
- - Data
- - Modifier:
- - Modifier Order
- - Chaining
- - Composed Modifier
- - Layout:
- - Column
- - Box
- - Row
- - ConstraintLayout
- - List:
- - LazyColumn
- - LazyRow
- - LazyVerticalGrid
- - LazyPagingItems
- - Image:
- - Icon
- - Image
- - coil-compose
- - Landscapist
- - Text:
- - TextField
- - OutlinedTextField
- - ClickableText
- - Graphics:
- - Surface
- - Canvas
- - Gestures:
- - Scrolling
- - Dragging
- - Swiping
- - Zooming
- - Animation:
- - AnimatedVisibility
- - AnimatedContent
- - Crossfade
- - rememberInfiniteTransition
- - animateContentSize
- - updateTransition
- - animate*AsState
- - AnimationState
- - animate
- - Animatable
- - Animation
- - CompositionLocal:
- - CompositionLocalProvider
- - compositionLocalOf
- - staticCompositionLocalOf
-- Service:
- - Google:
- - Google Play Services
- - Google Maps
- - Firebase:
- - Authentication
- - Crashlytics
- - Remote Config
- - Cloud Messaging
- - FiresStore
- - Realtime Database
-- Advertisements:
- - Google AdMob
- - Meta Audience Network
- - MoPub
- Code Analysis & Testing:
-- Linter:
- - Ktlint
- - Detekt
- - Android Lint
-- Debugging:
- - Timber
- - LeakCanary
- - Stetho
- - Chucker
-- Unit Testing:
- - Unit Test:
- - JUnit
- - Kluent
- - Mockk
- - Android Test:
- - Robolectric
- - Espresso
- - Kaspresso
-- Benchmark
-- CI/CD:
- - GitHub Actions
- - Jenkins
- - Travis CI
- - Circle CI
- - Bitrise
-- QA & App Publishing:
- - Firebase App Distribution
- - Google Play
## 🤝 Contribution