Android Developer Roadmap

This fork: Less bullshit, more advanced and useful topics

Roadmap to learn Android App Development

• Programming
  • Java
    • Syntax
    • Stdlib basics: collections, utilities
    • OOP concept, principles and patterns
    • Streams, FP concept
    • Multithreading
      • Thread and Runnable
      • Executor(s), ExecutorService, ThreadPoolExecutor
      • Future, CompletableFuture
  • Kotlin
    • Syntax, Generics, idioms
    • (Mutable)Collections, Sequences, inline functions, inline classes
    • Coroutines, Structured Concurrency
• Android Studio / IntelliJ IDEA
  • Android Studio IDE Overview
  • Project Structure
    • Java/Kotlin
    • XML
    • .gradle files
• Android Component
  • Activity
    • Activity Lifecycle
    • Tasks & Back Stack
    • nonConfigurationInstance, savedInstanceState
  • Service
    • IntentService
    • JobIntentService
  • Broadcast Receiver
  • Content Provider
• Intents
  • Types of Intent
    • Implicit
    • Explicit
  • Intent Filter
• Static User Interface
  • View
    • TextView, Button, EditText, ImageView, ImageButton, etc
  • ViewGroup
    • FrameLayout, LinearLayout, RelativeLayout, etc
• Dynamic User Interface
  • ListView, RecyclerView
  • ViewPager
  • Spinner
• User Interaction
  • ProgressBar
  • Dialogs
  • Toast & Snackbar
• UI Resources
  • Colour formats
  • Drawables (color, shape, selector, vector, ripple, bitmap, 9-patch)
  • String, Text (Spannable, CharSequence)
• Custom Views and Drawables
  • Canvas
  • Paint, TextPaint
  • Path
  • PorterDuff, Xfermode, ColorFilter
• Fragments
  • Fragment Lifecycle
  • Fragment Manager
  • Child fragments
• Storage
  • Raw files
  • Shared Preferences
  • SQLite database
• Build
  • Gradle
  • Debug / Release Configuration
• Threading
  • Handler and Looper, IdleHandler
  • HandlerThread
  • AsyncTask
  • IntentService
• Debugging and profiling
  • Debugger
  • Memory: heap dumps, memory leaks, LeakCanary
  • Sampling and Tracing, CPU profiler, Systrace, Nanoscope
  • Logging
  • Exceptions
  • Error Handling
• 3rd Party Libraries
  • Image Loading
    • Glide
    • Picasso
  • Networking
    • OkHttp
    • Retrofit
• Data Format
  • JSON
    • streaming: android.util.JsonReader/Writer
    • AST: org.json
    • mapping/binding: GSON, Moshi, Jackson or whatever
  • Unpopular but interesting: CBOR, Protobuf, FlatBuffers, Cap'n'Proto, and more
• Android Jetpack
  • Basic Components
    • AppCompat Activities and Fragments
    • Android KTX
    • Multidex
  • Behaviour Components
    • Download Manager
    • Media Playback
    • Notification
    • Permissions
    • Preference
    • Sharing
    • Slice
  • UI Component
    • Animation & Transition
    • Emoji
    • Palette
• Architecture
  • MVWhatever
• Unit Testing
  • Unit Testing
  • Robolectric
  • Instrumentation Testing
• Firebase
  • FCM
  • Crashlytics
  • Analytics
  • Remote Config
  • App Indexing
  • Dynamic Link
• Security
  • Keystore
  • SQLCipher
• Shrinking and obfuscation
  • AAPT shrinkResources
  • minifyEnabled, Proguard, R8
• App Release
  • .keystore file
  • App Bundle, Dynamic Feature
  • Playstore
• Keep Learning and Improving