HomeCoursesMastering Kotlin Coroutines

Intermediate

26h

Updated 5 months ago

Mastering Kotlin Coroutines
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Gain insights into Kotlin coroutines and their applications in Android. Learn about essential concepts like builders, context, scope, exception handling, testing, and data flows.

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Ever since Google announced Kotlin as the language of choice for Android development, it's become increasingly popular. Current trends suggest that coroutines are the direction in which our industry is clearly headed. This course is for anyone interested in getting experience with Kotlin coroutines. In this course, you’ll take a hands-on, task-based approach to using coroutines in Android applications. You'll work with the most common tools that Android back-end developers use every day for Kotlin. The course explains what Kotlin coroutines are and how they work. Then, it introduces essential concepts from the kotlinx.coroutines library, such as builders, context, and scope. Kotlin best practices, exception handling, and testing of coroutines are also covered. Finally, the last part of the course will focus on hot and cold data sources, channels, and flows. By the end of this course, you’ll have tangible experience using Kotlin coroutines and will be ready to build even more coroutines of your choice.

Ever since Google announced Kotlin as the language of choice for Android development, it's become increasingly popular. Current ...Show More

WHAT YOU'LL LEARN

An understanding of how Kotlin coroutines work under the hood

An understanding of how suspension and flows work

Hands-on experience using different coroutine builders

The ability to test time dependencies between coroutines

The ability to use channels for practical use cases

A working knowledge of StateFlow, SharedFlow, and the CoroutineScope functions

An understanding of how Kotlin coroutines work under the hood

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Content

124 Lessons16 Quizzes1 Challenge

1.

Getting Started

2 Lessons

Get familiar with Kotlin coroutines for concurrent programming in software development.

Introduction to Kotlin Coroutines

About the Course

2.

Understanding Kotlin Coroutines

16 Lessons

Discover the logic behind Kotlin coroutines for asynchronous tasks, from theory to practical applications.

Kotlin Coroutines vs. JVM Libraries

Kotlin Coroutines in Frequent Use Cases

Thread Switching and Callbacks

RxJava and Other Reactive Streams

Using Kotlin Coroutines

Coroutines on the Backend

Sequence Builder

Sequence Builder Real-life Usages

Challenge: Factorial of a Given Number

Solution: Factorial of a Given Number

How Does Suspension Work?

Resuming with a Value

Resuming Suspension with an Exception

Challenge: Suspension Coroutine with Specified Type for Output

Solution: Suspension Coroutine with Specified Type for Output

Quiz: Understanding Kotlin Coroutines

3.

Coroutines Under the Hood

7 Lessons

Examine the inner workings of Kotlin coroutines, focusing on state management and efficiency.

Introduction: Coroutines Under the Hood

A Function with a State and Resumed Value

Performance of Suspending Functions

Coroutines: Built-in Support vs. Library

Challenge: Coroutines Under the Hood

Solution: Coroutines Under the Hood

Quiz: Coroutines Under the Hood

4.

Kotlin Coroutine Library

9 Lessons

Grasp the fundamentals of Kotlin Coroutine Library, coroutine builders, and structured concurrency.

Introduction: Kotlin Coroutine Library

Coroutines Builders: The launch Builder

Coroutines Builders: The runBlocking Builder

Coroutines Builders: The async Builder

Structured Concurrency

Coroutine Builders: Using coroutineScope

Challenge: Coroutine Builders

Solution: Coroutine Builders

Quiz: Coroutine Builders

5.

Coroutine Context

6 Lessons

Map out the steps for understanding and managing Kotlin CoroutineContext elements.

Interface and Finding Elements in Coroutine Context

Adding, Emptying, and Subtracting Elements and Folding Contexts

Coroutine Context: Accessing and Creating Context

Challenge: Coroutine Context

Solution: Coroutine Context

Quiz: Coroutine Context

6.

Job and Awaiting Children

6 Lessons

Focus on managing coroutine Jobs, parent-child relationships, and effective coroutine synchronization.

Introduction: Job and Awaiting Children

Coroutine Builders Job

Job Factory Function

Challenge: Job and Awaiting Children

Solution: Job and Awaiting Children

Quiz: Job and Awaiting Children

7.

Cancellation and Exception Handling

10 Lessons

Piece together the parts of cancellation and exception handling in Kotlin coroutines.

How Does Cancellation Work?

Cancellation: Stopping the Unstoppable

Challenge: Cancellation of a Job

Solution: Cancellation of a Job

Exception Handling

Other Ways of Exception Handling

Challenge: Exception Handling

Solution: Exception Handling

Quiz: Cancellation and Exception Handling

8.

Coroutine Scope Functions

7 Lessons

Try out effective coroutine management with Kotlin coroutine scope functions.

Coroutine Scope Functions

More About coroutineScope

Functions Similar to coroutineScope

Connecting Coroutine Scope Functions

Challenge: Coroutine Scope Functions

Solution: Coroutine Scope Functions

Quiz: Coroutine Scope Functions

9.

Dispatchers and Constructing a Coroutine Scope

9 Lessons

Walk through dispatchers' roles and mechanisms, and construct effective coroutine scopes in Kotlin.

I/O Dispatchers

More on Dispatchers

Mechanism and Performance of Dispatchers

Challenge: Dispatchers

Solution: Dispatchers

Constructing a Coroutine Scope

More on Constructing a Coroutine Scope

Quiz: Dispatchers and Constructing a Coroutine Scope

10.

Shared State

6 Lessons

Go hands-on with efficient coroutine solutions for managing shared state and avoiding deadlocks.

The Problem with Shared State

A Dispatcher Limited to a Single Thread

Advantages and Problems with Mutex

Challenge: The Problem with Shared State

Solution: The Problem with Shared State

Quiz: Shared State

11.

Testing Kotlin Coroutines

8 Lessons

Break down complex ideas in testing Kotlin coroutines, virtual time manipulation, and dispatcher usage.

Testing Suspending Functions

Functions Used in Testing Kotlin Coroutines

More on Testing Kotlin Coroutines

Testing Functions Properties

Testing Android Functions That Launch Coroutines

Challenge: Testing Kotlin Coroutines

Solution: Testing Kotlin Coroutines

Quiz: Testing Kotlin Coroutines

12.

Channel and Actors

8 Lessons

Deepen your knowledge of channels and actors, their types, parameters, and practical implementation.

What Is a Channel?

Channel Parameters

Channels as a Communication Primitive

Challenge: Channel and Actors

Solution: Channel and Actors

Quiz: Channel and Actors

13.

Hot and Cold Data Sources

5 Lessons

Follow the process of distinguishing and utilizing hot and cold data streams in Kotlin.

Hot Channel and Cold Flow

Challenge: Hot and Cold Data Sources

Solution: Hot and Cold Data Sources

Quiz: Hot and Cold Data Sources

14.

Flow

5 Lessons

Master the steps to handle asynchronous data streams using Kotlin Flow and suspending functions.

Introduction to Flow

Characteristics, Elements, and Real-life Use Cases of Flow

Challenge: Practice a Suspending Function Using Flow

Solution: Practice a Suspending Function Using Flow

15.

Flow Building

5 Lessons

Get familiar with building and managing Kotlin flows for efficient asynchronous data handling.

Different Ways of Building Flows

Understanding Flow Builder

Challenge: Flow Building

Solution: Flow Building

Quiz: Flow Building

16.

Flow Lifecycle Functions

5 Lessons

Get started with managing Kotlin Flow lifecycles and handling exceptions effectively.

Functionalities of Different Functions

More on Flow Lifecycle Functions

Challenge: Flow Lifecycle Functions

Solution: Flow Lifecycle Functions

Quiz: Flow Lifecycle Functions

17.

Flow Processing, SharedFlow, and StateFlow

9 Lessons

Examine flow manipulation, collection processing, fold/scan functions, shared and state flows, and practical challenges.

Flow Processing

Collection Processing

The fold and scan Functions

flatMap and Terminal Operations

Challenge: Flow Processing

Solution: Flow Processing

SharedFlow and StateFlow

Extension of SharedFlow

Quiz: Flow Processing, SharedFlow, and StateFlow

18.

Wrap Up!

1 Lessons

Break down the steps to master Kotlin coroutines for effective asynchronous programming.

Certificate of Completion

Showcase your accomplishment by sharing your certificate of completion.

Course Author:

Marcin Moskała

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