Android: Master List of Topics

This Master List covers the range of topics one should devote time and energy to learn and master to become a proficient Android mobile Application Developer. Knowing is half the battle.

Basic Topics

• The Java Language / Kotlin Language (pick your poison)

  • Primitive Data Types
  • Collection Data Types
  • Syntax
  • Control Flow (Loops, If/Then Checks)
  • Basic Error Handling (try/catch)
  • Accessors and Modifiers (Encapsulation, getters and setters)
  • Object-Oriented Programming principles specific to Java
  • Nested Classes
  • Annotations
  • Documentation

• Layouts

  • Linear Layouts
  • Relative Layouts
  • Constraint Layouts
  • Independent Layouts for Portrait and Landscape
  • Layouts for Embedded Fragments

• Design

  • String Resource Files (strings.xml)
  • Customizing Theme Colors (styles.xml)
  • Dimensions (dimens.xml)
  • Material Design Guidelines
  • Animation

• Activities

  • TAGs
  • Activity Life Cycle Callbacks
  • Determine Orientation
  • SaveInstanceStates
  • Renaming Title of Activity shown in App Bar from Manifest
  • Adding Menu Buttons
  • Navigation (to other activities)
  • Navigation (adding additional fragments to backstack)
  • Passing data from one activity to another using Explicit Intents
  • Capturing returned data from another activity
  • Capturing returned data from another application

• Fragments

  • Fragment Life Cycle Callbacks
  • List Fragment
  • Custom Fragments
  • Adapters
    • ListAdapter
    • Custom Adapters (extends BaseAdapter)
  • AdapterViews
    • ListView
    • GridView
  • Menus in Fragments (Adds to App Bar)
  • Creating Subscribers, Delegates, Listeners, Interfaces
  • Animating Transitions

• Intents

  • Implicit Intents
  • Explicit Intents
  • Passing Data (Parcelable, Bundle, onActivityResult)
  • Animating Transitions

• Data Persistence

  • FileProviders
  • ContentProviders
  • SQLite CRUD
  • Shared Preferences
  • App Private Storage
  • Protected Storage
  • Public Storage

• Miscellaneous Topics

  • AppCompat
  • Asynchronous Tasks
  • OnClickListeners
  • Networking
  • Broadcast Receivers (kind of on their way out)
  • Services
  • Notifications
  • Pending Intents
  • WebViews

• 3rd Party APIs

  • Firebase
  • Realm
  • OKHTTP
  • Commons-IO
  • Picasso