The article provides a comprehensive guide on learning Android development with Jetpack Compose. It covers the basics of Compose, building UIs, managing state, and data flow principles. It delves into layouts, components, theming, animation, navigation, testing, accessibility, and migration to Compose. Advanced topics include state management, multithreading, services, job scheduling, broadcast receivers, content providers, data persistence, networking, architecture patterns, dependency injection, and design patterns.

Jetpack Compose Basics

In this section, you will learn:

• What Compose is

• How to build UIs with Compose

• Jetpack Compose architectural layering

• Data flow principles in Compose

• Lifecycle of composables

• Side-effects in Compose

• Jetpack Compose phases

• How to manage state in composable functions

Layouts in Jetpack Compose

In this section, you'll learn how to use Compose's highest level of UI abstraction, Material Design, as well as low-level composables like Layout that allow you to measure and place elements on the screen.

1. Scaffold

   • Scaffold composable to provide structure for your screens.

2. App Bars

   • Various composables let you create app bars along the top and bottom of your screens.

3. Layouts in Compose

   • Compose Layout Basics

   • Compose Modifiers

   • Constraints and Modifier Order

   • Create Custom Modifiers

   • List of Compose Modifiers

   • Pager in Compose

   • Flow Layouts in Compose

   • Custom Layouts

   • Adaptive Layouts

   • Alignment Lines

   • Intrinsic Measurements

   • ConstraintLayout

Jetpack Compose Components

In this section, you'll explore various components available in Jetpack Compose to build interactive and visually appealing UIs.

• Text and Typography: Tools for displaying and styling text.

• Images and Graphics: Components for loading and displaying images.

  • Loading Images: Methods to efficiently load images.

  • ImageBitmap vs. ImageVector: Different formats for handling images.

  • Material Icons: Predefined icons following Material Design guidelines.

  • Customize an Image: Techniques to modify image appearance.

  • Custom Painter: Create custom drawings and graphics.

• Box: Stack children on top of each other for overlays.

• Column: Arrange children vertically.

• Row: Arrange children horizontally.

• Surface: Provides a material surface with customizable properties.

• Spacer: Adds space between components.

• TextField: Input text with various styles.

• RadioButton: Select one option from a set.

• ToggleButton: Switch between two states.

• TabRow: Create tabbed navigation.

• DropdownMenu: Display a dropdown menu with items.

• Buttons: Interactive elements for user actions.

• Floating Action Buttons: Circular buttons for primary actions.

• Cards: Contain content and actions about a single topic.

• Chips: Compact elements representing an input, attribute, or action.

• Dialogs: Modal windows for user interactions.

• Progress Indicators: Show progress of a task.

• Sliders: Select a value from a range.

• Switches: Toggle between on/off states.

• Checkboxes: Select multiple options from a set.

• Badges: Display small status descriptors.

• Bottom Sheets: Slide-up panels for additional content.

• Dividers: Separate content visually.

• Navigation Drawers: Side panels for navigation.

• Time Pickers: Select a time.

• Date Pickers: Select a date.

• Snackbars: Brief messages at the bottom of the screen.

• Lists and Grids: Organize content in scrollable lists or grids.

  • LazyColumn: Efficient vertical scrolling lists.

  • LazyRow: Efficient horizontal scrolling lists.

• Resources Management: Manage app resources like strings, dimensions, and colors.

  • Strings: Handle text resources.

  • Dimensions: Consistent sizing resources.

  • Colors: Maintain a color scheme.

  • Vector Assets and Image Resources: Scalable graphics.

  • Animated Vector Drawables: Dynamic visual effects.

  • Icons: Enhance UI with icon resources.

  • Fonts: Custom typography management.

Using State in Jetpack Compose

In this section, you'll learn about the state and how it can be used and manipulated by Jetpack Compose.

Jetpack Compose Theming

In this section, you will learn how to use Jetpack Compose's theming APIs to style your application. You'll see how to customize colors, shapes, and typography so that they're used consistently throughout your application, supporting multiple themes such as light and dark themes.

1. Anatomy of a theme

2. Material Design 3

3. Material 2 vs Material 3

4. Custom Theming

Jetpack Compose Animation

In this section, you will learn how to use some Animation APIs in Jetpack Compose.

Jetpack Compose Navigation

In this section, you'll learn how to use the Jetpack Navigation component to navigate between screens in Jetpack Compose.

Testing in Jetpack Compose

In this section, you'll learn about testing UIs created with Jetpack Compose. You will write your first tests while learning about testing in isolation, debugging tests, semantics trees, and synchronization.

Accessibility in Jetpack Compose

In this section, you will learn how to use Jetpack Compose to improve your app's accessibility. We will walk through several common use cases and improve a sample app step by step. We will cover touch target sizes, content descriptions, click labels, and more.

Migrating to Jetpack Compose

In this section, you'll be migrating parts of the XML screen to Compose.

Advanced State and Side Effects in Jetpack Compose

In this section, you will learn advanced concepts related to State and Side Effects APIs in Jetpack Compose. You'll see how to create a state holder for stateful composables whose logic isn't trivial, how to create coroutines and call suspend functions from Compose code, and how to trigger side effects to accomplish different use cases.

Android MultiThreading

1. Thread, Runnables, and Callables

   • Basics of threading and how to use Runnables and Callables

2. Handlers and Loopers

   • Use Handlers and Loopers for message handling

3. Executors and ThreadPool

   • Manage threads using Executors and ThreadPools

4. AsyncTask

   • Use AsyncTask for background operations (Note: Deprecated in API level 30)

5. RxJava

   • Use RxJava for reactive programming

6. WorkManager

   • Use WorkManager for background tasks

7. AlarmManager

   • Schedule tasks using AlarmManager

8. Coroutines

   • Use Kotlin Coroutines for asynchronous programming

Services

1. Background Service / Started Service

   • Create and manage background services

2. Foreground Service

   • Create and manage foreground services

3. Bound Service

   • Create and manage bound services

4. Android Interface Definition Language (AIDL)

   • Use AIDL for inter-process communication

5. IntentService / JobIntentService

   • Use IntentService and JobIntentService for background tasks

JobScheduler

• Use JobScheduler for scheduling background tasks

Broadcast Receivers

1. Normal Broadcast Receiver

   • Use sendBroadcast()

   • Implicit and explicit broadcasts

   • Dynamic and static registration

2. Ordered Broadcast Receiver

   • Use sendOrderedBroadcast()

   • Implicit and explicit broadcasts

   • Dynamic and static registration

3. Sticky Broadcast

   • Note: Deprecated in API 21

4. Local Broadcast

   • Use LocalBroadcastManager

   • Implicit and explicit broadcasts

   • Dynamic registration

Content Provider

• Use Content Providers for data sharing between applications

Data Persistence

1. SharedPreferences

   • Store and retrieve simple data using SharedPreferences

2. Room Database

   • Use Room for database management

   • Entities, DAOs, and database migrations

3. SQLite

   • Basics of SQLite database management

4. DataStore

   • Use DataStore for data persistence

Android Networking

1. Volley

   • Use Volley for network operations

2. OkHttp

   • Use OkHttp for HTTP requests

3. Retrofit

   • Use Retrofit for network operations and API calls

4. Ktor

   • Use Ktor for asynchronous network operations

Architecture Patterns

1. MVC (Model — View — Controller)

   • Basics of the MVC architecture pattern

2. MVP (Model — View — Presenter)

   • MVP architecture pattern

3. MVVM (Model — View — ViewModel)

   • Implement the MVVM architecture pattern using ViewModel and LiveData

4. Seign Pattern

   • Seign pattern and its use cases in software architecture

Dependency Injection

1. Basics of Dependency Injection

   • Principles of Dependency Injection (DI) and its benefits

2. Dagger

   • Use Dagger for dependency injection in Android

3. Hilt

   • Use Hilt, a dependency injection library built on top of Dagger, for simpler DI in Android applications

4. Koin

   • Use Koin, a lightweight dependency injection framework for Kotlin

Design Patterns

1. Singleton Pattern

   • Implement the Singleton pattern to ensure a class has only one instance

2. Factory Pattern

   • Factory pattern for creating objects without specifying the exact class

3. Observer Pattern

   • Use the Observer pattern to allow objects to be notified of changes in other objects

4. Builder Pattern

   • Builder pattern for constructing complex objects step by step

5. Adapter Pattern

   • Use the Adapter pattern to allow incompatible interfaces to work together