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The Complete Android Kotlin Developer Course | Kotlin A-Z™ (Udemy.com)

Kotlin | Learn android app development from scratch, develop android app with kotlin and become kotlin android developer

Created by: Oak Academy

Last updated September 2026

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What you will learn

  • Whether you want to learn Kotlin in order to build your next Android app, or simply need an introduction to language.
  • Kotlin is popular for both Android developers and Java developers.
  • Kotlin is a statically-typed, general purpose programming language used to develop for the Java Virtual Machine and Android devices
  • Kotlin is an amalgamation of the object-oriented and functional programming paradigms and can also be compiled to JavaScript source code.
  • kotlin
  • android kotlin
  • android app development with kotlin
  • android application development
  • android ecommerce app
  • android game development
  • app android
  • android app design
  • mobile app development
  • mobile development
  • android development
  • What is Kotlin
  • Kotlin Programming Language
  • Kotlin Android Fundamentals
  • Java Development Kit - JDK
  • Android Studio
  • Variables in Android Kotlin

How it compares

Against the other 28 rated Udemy courses in Kotlin on CourseDuck:

  • Rating4.4 out of 5higher than 25% of them
  • Reviews146#24 of 29 by number of reviews
  • Length31.5 hourslonger than 85% of them
  • Last updatedSeptember 2026more recently than 89% of them

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Course Description

Hi there,

Welcome to The Complete Android Kotlin Developer Course | Kotlin A-Z™ course.
Kotlin | Learn android app development from scratch, develop android app with kotlin and become kotlin android developer

Kotlin is popular for both Android developers and Java developers. Whether you want to learn Kotlin in order to build your next Android app, or simply need an introduction to the language, Udemy has a top-rated course to help you achieve your goals.

Kotlin is a very new and up-to-date programming language. Kotlin android is accepted by Google as the official language for Android development. Therefore, it is a language that everyone who wants to be an android developer should know. In this course, we teach Kotlin programming language from beginner to advanced level, considering the importance of Kotlin.

Due to its open-source nature, working with the Android platform necessitates constantly learning about the Android platform. My android development course on Udemy keeps you ahead of this learning curve, with hands-on lectures on Android operating systems and more.

The Android platform is increasingly popular with developers and a dominant force in the global smartphone market. As more businesses develop mobile apps for customer engagement, Android development skills are likely to stay in high demand.

  • Do you want to improve your career options by learning android?

  • Do you want to learn android app development from Scratch?

  • Do you want to learn android development from Scratch?

  • Do you want to be an android studio master?

  • Do you want to build your first app?

If your answer is “yes” , you are at the right place!

I really like the approach of this course about the Android app. In this course, the instructor focuses on the Android SDK to teach you how to build beautiful applications for smartphones. As the course title indicates, it is the complete guide to learn android application development.

The Android platform is increasingly popular with developers and a dominant force in the global smartphone market. As more businesses develop mobile apps for customer engagement, Android development skills are likely to stay in high demand.

Android development is a software creation process that focuses on applications, better known as apps, that are compatible with devices running the Android operating system (OS). Because Android is an open-source project, developers have easy access to the Android software development kit (SDK). Many use this kit in conjunction with Kotlin, Java, and C++ programming languages to make their apps. The Android SDK tools compile your code along with any data and resource files into an APK, or Android package, which is an archive file that uses an .apk suffix. One APK file contains all Android app contents used by devices to install your app. When the app is complete and ready for release, Android developers can upload their apps to the Google Play Store for users to download for android game development.


Chances are, you’ve heard of Android many times, and Do u want to android developer? You may even have an Android smartphone, app android tablet, watch, or TV. But what is Android? Android is a mobile operating system (OS) that was designed and developed by Google. The Android OS is Linux kernel-based. So, what’s “Linux kernel,” and why is that such an essential detail about Android Development?

In a nutshell, Linux kernel is an OS, well, sort of — it’s partially an OS. More like a small part of an OS, but an important one. The Linux kernel is the layer responsible for interfacing with the device’s hardware and managing the device’s CPU and memory. The Android OS is Linux kernel-based because the Linux kernel allows for a more open and customizable OS, which is what Android promotes — any device manufacturer can take the Android OS and make it their own.

Imagine how bad it would be if, say, resources from application A read information from another application’s files and vice versa with no constraints — malicious, insecure interactions would take hold and bring the whole system to a halt.

The sharing of information (data) between applications is an essential part of building inter-connected applications, so the android OS requires developers to set permissions that users must grant to do certain things. For example, for an application to access the phone’s File System (internal files), the user must give access first. This means the app developer must let the user know, in advance, what the app they are installing wants to access. For example, when a user installs an android app that needs to access the photo gallery or the phone’s camera, the app will ask for permission to access the gallery or the camera. The app user has the power to either grant or denies permission. App permissions in Android ensure the user’s protection from malware and software viruses.

This course is built to help beginners to start making applications in android studio and android application development or android app design.

If you want to develop yourself in Android Apps, this course is for you. Improve yourself with different applications

Online course platforms have android app development courses and android eCommerce app but we still think that most of them are missing the hands-on application part. This course is designed to fill this gap.

My "Android App Development Course with Kotlin" course will take you from beginner to advance level.

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Instructor Details

Oak Academy

Who is Oak Academy?

Oak Academy is a London-based online technology education company. We publish practical, structured video courses in cybersecurity, IT certification, artificial intelligence, data science, software development, and mobile technologies. More than 470,000+ learners have enrolled in Oak Academy courses on Udemy, leaving over 67,000+ reviews across our catalogue. Our courses are produced in English, Portuguese, and several other languages.

What does Oak Academy teach?

Our catalogue is organized around the skills employers actually hire for:

Cybersecurity and ethical hacking — penetration testing, network and web application security, Nmap, Metasploit, Wireshark, Kali Linux, and hands-on practice environments such as TryHackMe and Hack The Box.

IT certification prep — CompTIA A+, Network+, Security+, and newer tracks including CompTIA DataAI, mapped directly to current exam objectives.

Artificial intelligence and data science — Python, NumPy, Pandas, Matplotlib, machine learning with Scikit-learn, R programming, and end-to-end data projects.

Software and mobile development — Python, Java, JavaScript, Flutter and Dart, Android, iOS, and full-stack web development.

How are Oak Academy courses designed?

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Reviews

4.4

146 ratings on Udemy

Select a bar to show only those reviews.Select the bar again to show every rating.

By Max King on 10/27/2024

While the content is not bad, maybe it's just me, I find the instructor extremely annoying. I'm sure "My friends, well, alright" and similar fillers are not necessary in every second sentence in a programming course. Also the his style is super annoying and distracting.

By Tiziano Radice on 11/11/2023

Thanks a lot to Mr. Mehmet, sometimes there's some problem but he kindly helps to solve it.

By Daan Biesterbos on 10/20/2023

Aangenaam om naar te luisteren. Niet al te langdradig. Ik ben nieuwsgierig wat de course verder te bieden heeft.

By J Firesj on 11/12/2022

Still trying to coordinate running Android Studio and watching lesson on video. Hopefully it will become easier with time.

By Henrico Heine on 8/31/2022

So far everything is clear and easy to understand. Thanks. It makes me excited for what is waiting to be learned.

By Dor Perez on 2/23/2022

First of all, thank you for making this course. Positives: Mehmet explains the subjects in a very simple, clear way! He touches the main subjects you need to know in order to build android application as a beginner. Mehmet's English is great and easy to understand, and he is very funny with his little jokes, I really enjoyed them and the course in general :) Negatives: Overall, this is a good course to learn the basics, however, practice is very important in order to learn how to code, but it's kind of missing. You developed 2 projects and in the rest of the lessons you just show how to implement it on android studio, I would expect that the student will get a small task or app to build, and you will review the solution in the next lesson, or you can tell them to pause the video and try it by themselves. Thank you again Mehmet!

By Arturs Gerkis on 1/4/2022

Хороший курс для новичков. Доступно рассказывают основы

By OmerKaraca on 11/8/2021

Katıldığım en güzel kurslardan birisi oldu. Eğitim harikaydı

By Sevgin SERBEST on 10/3/2021

The course is simple and understandable, I highly recommend it

By Özcan Okut on 10/1/2021

The course was very good. Thanks to our teacher

Showing all 10 reviews on CourseDuck

Read all 146 reviews on Udemy

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Overall Score : 88 / 100