Android Multithreading Masterclass from Udemy

Multithreading is an essential topic in Android development because, to write snappy and reliable Android applications, you must use more than one thread. Unfortunately, multithreading is also a very complex technique that introduces unique challenges. Incorrect multithreaded code manifests itself as unresponsive user interfaces, freezes, memory leaks, crashes and other bugs, all of which can be very challenging to find and fix.

In this course, you'll dive into the fundamentals of multithreading and learn to write correct and performant multithreaded code of any complexity in your Android applications.

Topics covered in this course:

What a thread is
Why multithreading is uniquely challenging
Keep the user interface responsive
Make your multithreaded code thread-safe (i.e. correct and reliable)
Analyze the performance of multithreaded code
Manage up to hundreds(. ) of concurrent threads
Compare several multithreading frameworks for Android, including AsyncTask, RxJava and Kotlin Coroutines
More...

You'll practice everything you'll learn here by solving a series of carefully designed, hands-on exercises. So, after completing this course, you'll have extensive hands-on experience with multithreaded code.

We'll review several popular concurrency frameworks and see how they accommodate the same complex multithreaded feature. This will allow you to grasp the full landscape of multithreading in Android ecosystem. This will allow you to choose the framework you like the best to use in your Android projects.

So, if you want to become an expert in Android multithreading, this course is perfect for you.

What's inside

Learning objectives

Write multithreaded code of any complexity in your android apps
Learn the difference between the ui and background threads
Understand advanced concepts like synchronization, locks, volatility and happens-before
Analyze and reason about the thread-safety of your code

Manage hundreds of inter-dependent threads
Prevent memory leaks
Compare popular concurrency frameworks for android: asynctask, rxjava, coroutines

Write multithreaded code of any complexity in your android apps
Learn the difference between the ui and background threads
Understand advanced concepts like synchronization, locks, volatility and happens-before
Analyze and reason about the thread-safety of your code
Manage hundreds of inter-dependent threads
Prevent memory leaks
Compare popular concurrency frameworks for android: asynctask, rxjava, coroutines

Syllabus

Introduction

Java and Kotlin

Tutorial Application Overview and Important Info

Concurrency and Multithreading Fundamentals

Motivation for Hardware Intuition

CPU Operation Basics

Single-Tasking System

Cooperative Multitasking System

Preemptive Multitasking System

Multiprocessing System

Android Processes and Threads

Thread Class, Garbage Collector, Memory Leaks

java.lang.Thread Class

Exercise 1

Garbage Collector in Android

Memory Leaks in Android

Threads Termination

Exercise 2

Thread Class, Garbage Collector, Memory Leaks Summary

UI Thread in Android Applications

UI Thread vs Background Thread in Android

Demonstration of UI Thread

User Interface Responsiveness

Protection of User Interface from Background Threads

Execution of Code on UI Thread

Handler and Looper Intuition

Exercise 3

UI Thread in Android Applications Summary

Multithreading Challenges

Introduction To Multithreading Challenges

Visibility

Atomicity

Volatile Variables

Concurrency Bug Fix, or When Volatility Isn't Sufficient

Atomic Classes

Threads Synchronization

Immutability

Happens Before

Happens Before Demonstration

Exercise 4

Exercise 4 Solution

Amendment to Exercise 4 Solution

Multithreading Challenges Summary

Paused (Blocked) Threads

Pausing Threads

Thread Sleep

Thread Wait

Thread Join

Amendment To Thread Join

Exercise 5

Solution Exercise 5

Paused (Blocked) Threads Summary

Clean Design of Multithreaded Code

Importance of Clean Design

Refactoring to Use Case and Observer

Java 8 Lambdas

Exercise 6

Clean Design of Multithreaded Code Summary

Thread Pool

Simple Cached Thread Pool

Thread Pool Issues

Custom Configuration Of ThreadPoolExecutor

Interplay Between Core Threads and Keep Alive Time

Misconfiguration of ThreadPoolExecutor in AsyncTask

Providing Multithreading Classes Using Dependency Injection

Exercise 7

Thread Pool Summary

AsyncTask

Why You Need to Know AsyncTask

AsyncTask Demonstration and Highlight of Issues

AsyncTask Summary

ThreadPoster

ThreadPoster Demonstration

Exercise 8

ThreadPoster Summary

RxJava

RxJava Introduction

RxJava Observable

RxJava Disposable

RxJava Advanced Multithreading

Exercise 9

RxJava Summary

Coroutines

Kotlin and Corooutines

Coroutines Demonstration

Nested Coroutines

Coroutines Dispatchers

Coroutines Cancellation

Non Cancellable Coroutines

Exercise 10

Coroutines Summary

Course Summary and Next Steps

Summary

Bonus Lecture

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Explores advanced techniques and concepts such as Synchronization, Locks, Volatility, and Happens-Before, which are essential for writing high-quality multithreaded code

Taught by Vasiliy Zukanov, a recognized expert in Android multithreading, who has extensive experience in developing and teaching courses on this topic

Covers a comprehensive range of topics, including thread creation, synchronization, communication, and performance optimization, which are essential for writing efficient and reliable multithreaded code

Includes hands-on exercises and projects throughout the course to help learners apply what they learn and gain practical experience

Provides a deep dive into the fundamentals of multithreading, which is essential for understanding and writing correct and performant multithreaded code

Examines popular concurrency frameworks for Android, including AsyncTask, RxJava, and Kotlin Coroutines, which allows learners to choose the most suitable framework for their projects

Career center

Learners who complete Android Multithreading Masterclass will develop knowledge and skills that may be useful to these careers:

Android Developer

Android Developers build applications specifically for Android operating systems. Proficiency in threading is a must-have skill for Android Developers, since one often needs to manage the execution of several functions at once to avoid freezing or data loss. This course provides a strong foundation for the use of concurrency and multithreading on the Android platform, which will be essential to a successful Android Developer.

See salaries and explore the career path for Android Developer

Mobile Application Developer

Mobile Application Developers specialize in writing and maintaining software for mobile devices. This course will be particularly useful for Mobile Application Developers who work on Android applications, as a large part of the instruction pertains to the intricacies of writing multithreaded Android applications.

See salaries and explore the career path for Mobile Application Developer

Software Engineer

Software Engineers work with computer software, designing and developing new applications or modifying existing ones. This course can help Software Engineers become more productive by exposing them to techniques for writing code that runs in multiple threads, in more detail than is typically covered in a computer science curriculum.

See salaries and explore the career path for Software Engineer

Computer Programmer

Computer Programmers write and maintain the code that allows computer applications to run. This course will help Computer Programmers to write multithreaded code with confidence and to solve concurrency issues that may come up in their work.

See salaries and explore the career path for Computer Programmer

Web Developer

Web Developers design and create websites. While this course primarily focuses on multithreading in native Android applications, the principles covered may also be useful for Web Developers, as some web frameworks implement concurrency and multithreading in similar ways to those for Android. As a result, this course may be useful in helping Web Developers to build more efficient and responsive web applications.

See salaries and explore the career path for Web Developer

Data Scientist

Data Scientists analyze data to extract insights and build models. This course may be useful for Data Scientists who work with large datasets, as it can help them to learn how to process data in parallel, which can significantly improve performance.

See salaries and explore the career path for Data Scientist

Machine Learning Engineer

Machine Learning Engineers build and maintain machine learning models. This course may be useful for Machine Learning Engineers who work with large datasets, as it can help them to learn how to train models in parallel, which can significantly improve performance.

See salaries and explore the career path for Machine Learning Engineer

Quantitative Analyst

Quantitative Analysts use mathematical and statistical models to analyze financial data. This course may be useful for Quantitative Analysts, as it will help them to understand how to write efficient and reliable multithreaded code, which is essential for processing large datasets and performing complex calculations.

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Systems Engineer

Systems Engineers design and build computer systems. This course may be useful for Systems Engineers, as it will help them to understand how to write efficient and reliable multithreaded code, which is essential for designing and building high-performance systems.

See salaries and explore the career path for Systems Engineer

Technical Writer

Technical Writers create documentation for software and hardware products. This course may be useful for Technical Writers who write documentation for Android applications, as it will help them to understand the complexities of multithreaded programming on the Android platform.

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UX Designer

UX Designers create the user interface for software and hardware products. This course may be useful for UX Designers who work on Android applications, as it will help them to understand the importance of keeping the user interface responsive, even when the application is performing complex tasks in the background.

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Product Manager

Product Managers manage the development and launch of software and hardware products. This course may be useful for Product Managers who work on Android applications, as it will help them to understand the technical challenges of multithreaded programming and to make informed decisions about the design and implementation of their products.

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Business Analyst

Business Analysts analyze business processes and identify opportunities for improvement. This course may be useful for Business Analysts who work on software development projects, as it will help them to understand the technical challenges of multithreaded programming and to communicate effectively with technical teams.

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IT Manager

IT Managers plan and direct the implementation of computer systems and networks. This course may be useful for IT Managers who oversee the development and deployment of Android applications, as it will help them to understand the technical challenges of multithreaded programming and to make informed decisions about the design and implementation of their systems.

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Teacher

Teachers educate students in a variety of subjects. This course may be useful for Teachers who teach computer science, as it will help them to understand the complexities of multithreaded programming and to teach their students how to write efficient and reliable multithreaded code.

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Android Multithreading Masterclass

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