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Android App Development with Kotlin

Packt Publishing

Building Android apps using Java requires a lot of boilerplate and ceremonial code. Do you want to build Android apps in an easy and effective way? Migrate to Kotlin, a first-class language for Android apps that makes life easy for developers.This course will help you master Kotlin and build effective Android applications. The course teaches you to easily create an Android app using the Kotlin-Android extension plugin. Next, you will learn how to implement Kotlin features such as Object Oriented features, Companion Objects , and Kotlin classes in your Android application. Finally, you'll learn how to style your application, publish it to the Google Play Store, and make it available to the World.By the end of the course you will have learned to use Kotlin to develop your Android Application in a easy and effective way.

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Building Android apps using Java requires a lot of boilerplate and ceremonial code. Do you want to build Android apps in an easy and effective way? Migrate to Kotlin, a first-class language for Android apps that makes life easy for developers.This course will help you master Kotlin and build effective Android applications. The course teaches you to easily create an Android app using the Kotlin-Android extension plugin. Next, you will learn how to implement Kotlin features such as Object Oriented features, Companion Objects , and Kotlin classes in your Android application. Finally, you'll learn how to style your application, publish it to the Google Play Store, and make it available to the World.By the end of the course you will have learned to use Kotlin to develop your Android Application in a easy and effective way.

About the Author :

Book of Brains creates and distributes high-quality technology training content. We aim to teach technology the way it is used in industry and the professional world. Our trained team of professionals delivers hands-on workshops and training content for mobile as well web development technologies. We constantly monitor current industry trends and keep our training materials and workshops up to date.

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What's inside

Learning objectives

  • Build android apps using the kotlin programming language
  • Explore the basic functionality of how an android app works using kotlin
  • Implement lists using recyclerview and learn about kotlin classes
  • Utilize the power of kotlin in an android app
  • Style your app for an enhanced user experience
  • Publish your app to google play store

Syllabus

Building Android apps has traditionally been bogged down by the limitations of Java. Now we have Kotlin in picture which is far more concise and expressive with interoperable features.
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This video gives an overview of the entire course.

Get a big picture of Kotlin.

Install the following softwares on your Windows or Mac or Linux.

Get started with creating Android apps using Kotlin.

Learn to run your Android app in Emulator.

Explore the important project files and directories.

In this section, students will create their first Android app using Kotlin by designing layouts, working with views or widg-ets such as Buttons, TextViews, EditTexts etc in XML files.

Get introduced to basics of Android app.

Learn to design layouts in Android and handle Button click events.

Create a new Activity and navigate to it.

Learn how to pass data from one Activity to another.

Learn how to pass data from one Activity to outside apps such as Whatsapp, Gmail, Hike.

Previously we saw how beautifully we can deal with Views and Layouts in our App using Kotlin. Now it is time to level up our app by implementing Lists using RecyclerView.

Get introduced to RecyclerView and CardView.

Add RecyclerView and CardView dependency in your project.

Use data class to create model class for list items.

Create a custom adapter class for RecyclerView.

Provide a Layout orientation to the RecyclerView.

Kotlin is packed with a lot of new features that were much needed in the developer world. Kotlin is intended to make our life easy.

Perform code cleanup.

Implement Extension function.

Implement Default Parameters in Android project.

Learn to make your code robust by using Null Safety Operators.

Define Static variables in Kotlin.

An app is incomplete without its finishing touches. So this section will focus on styling our app that we have built so far using Kotlin.

In this video, you will learn to Localize Strings in your Application and make it usable by people of different Locale.

Learn to update application Launcher icon.

Customize the app’s colors.

Customize the app’s Theme.

It is the dream of every developer to publish their apps in Google Play Store and hit milestones. So let’s take a head start towards our dream and see how to publish our app to the Playstore.

In this video, you will learn to Sign up for Google Play Developer Console.

Export Signed APK.

Make your app live in Google Play Store.

Good to know

Know what's good
, what to watch for
, and possible dealbreakers
Uses Kotlin, which reduces boilerplate and ceremonial code, making Android development easier and more effective for developers
Covers styling and publishing to the Google Play Store, which are essential steps for releasing a polished and functional Android application
Explores Kotlin features like Object Oriented features, Companion Objects, and Kotlin classes, which are useful for modern Android development
Teaches RecyclerView and CardView, which are standard components for displaying lists and data in Android applications
Requires installing software on Windows, Mac, or Linux, which may pose a barrier for learners with limited access to these operating systems
Teaches how to export a signed APK, which is necessary for publishing apps, but may require additional steps and knowledge of the Google Play Store

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Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Android App Development with Kotlin with these activities:
Review Java Fundamentals
Strengthen your understanding of Java fundamentals, as Kotlin interoperates with Java and understanding Java concepts will aid in grasping Kotlin's advantages and how it interacts with existing Android codebases.
Show steps
  • Review object-oriented programming concepts in Java.
  • Practice writing basic Java programs.
  • Study Java collections and data structures.
Read 'Head First Android Development'
Gain a broader understanding of Android development by reading 'Head First Android Development', which covers fundamental concepts and UI design.
View Head First Android Development on Amazon
Show steps
  • Read the chapters covering Android architecture and UI components.
  • Pay attention to the examples and exercises provided.
  • Relate the concepts to Kotlin-based Android development.
Read 'Kotlin in Action'
Deepen your understanding of Kotlin by reading 'Kotlin in Action', a comprehensive guide that covers the language's features and best practices.
View Kotlin in Action, Second Edition on Amazon
Show steps
  • Read the first few chapters covering basic syntax and features.
  • Focus on chapters related to object-oriented programming and functional programming.
  • Experiment with the code examples provided in the book.
Four other activities
Expand to see all activities and additional details
Show all seven activities
Kotlin Koans
Reinforce your Kotlin knowledge by completing Kotlin Koans, a series of exercises that cover various language features and concepts.
Show steps
  • Access the Kotlin Koans online or through IntelliJ IDEA.
  • Work through the exercises in each section.
  • Check your solutions and learn from the feedback.
Simple Android App with Kotlin
Solidify your understanding by building a simple Android app using Kotlin, such as a basic calculator or a to-do list app.
Show steps
  • Set up a new Android project in Android Studio with Kotlin support.
  • Design the user interface using XML layouts.
  • Implement the app's logic using Kotlin.
  • Test the app on an emulator or a physical device.
Blog Post: Kotlin vs. Java for Android
Deepen your understanding by writing a blog post comparing Kotlin and Java for Android development, highlighting the benefits of Kotlin.
Show steps
  • Research the key differences between Kotlin and Java.
  • Outline the structure of your blog post.
  • Write the blog post, providing code examples and explanations.
  • Edit and proofread your blog post before publishing.
Contribute to a Kotlin Android Library
Enhance your skills by contributing to an open-source Kotlin Android library, gaining experience with real-world projects and collaboration.
Show steps
  • Find an open-source Kotlin Android library on GitHub.
  • Review the library's documentation and code.
  • Identify a bug or feature to work on.
  • Submit a pull request with your changes.

Career center

Learners who complete Android App Development with Kotlin will develop knowledge and skills that may be useful to these careers:
Android Developer
An Android Developer specializes in creating applications specifically for the Android operating system. This role requires a deep understanding of the Android platform and the tools and technologies used to build apps. This course will allow prospective Android developers to get into the nitty-gritty of the Android platform while using Kotlin. The course dives into designing layouts using XML, handling user interactions, implementing lists with RecyclerView, using Kotlin-specific functionalities, and even the process of publishing to the Google Play Store. The hands-on nature of the course makes it perfect preparation for a career as an Android developer.
See salaries and explore the career path for Android Developer
Mobile Application Developer
A Mobile Application Developer creates applications for mobile devices, such as smartphones and tablets. This role involves the entire lifecycle of app development, from initial design to final release and maintenance. This course is ideal for aspiring mobile application developers as it will teach them to build Android applications from the ground up using Kotlin, a first-class language for Android. The course covers essential aspects like designing layouts, implementing lists using RecyclerView, and using Kotlin features to write effective code. It even teaches how to publish an app to the Google Play Store, which is a critical skill for a mobile application developer.
See salaries and explore the career path for Mobile Application Developer
Mobile Software Engineer
A Mobile Software Engineer focuses on the development and maintenance of software for mobile devices. This role requires expertise in programming languages, frameworks, and unique challenges associated with mobile platforms. This course is a perfect starting point for aspiring mobile software engineers. The course will help them build a solid understanding of Android development using Kotlin. In particular, they'll learn about creating designs, using lists, and implementing important Kotlin components. This course will further teach how to style an app to enhance user experience, and publish it to the Google Play Store, all of which will be essential in a career as a mobile software engineer.
See salaries and explore the career path for Mobile Software Engineer
Software Engineer
A Software Engineer designs, develops, and tests software applications. They are involved in the entire software development lifecycle and often collaborate with other engineers and stakeholders. This course, though focused on Android development with Kotlin, is a great resource for a software engineer looking to expand their mobile development skills. The course teaches the fundamentals of app development, including UI design, data handling, and publishing to a platform. This course's focus on using Kotlin to build real-world applications provides a strong foundation in important practices needed by a software engineer.
See salaries and explore the career path for Software Engineer
Software Developer
A Software Developer writes and tests code to develop software applications. This role requires a solid knowledge of programming languages, data structures, and software development principles. This course may be useful for a software developer seeking to learn mobile development. The course uses Kotlin programming to build Android applications. It covers key aspects of app development such as designing layouts, implementing lists, styling apps, and publication to the Google Play Store. These are all critical skills in software development and can broaden a software developer's skillset.
See salaries and explore the career path for Software Developer
Application Developer
An Application Developer is responsible for creating software applications that meet specific needs. This involves understanding requirements, writing code, testing, and deployment. This course may be useful for an application developer who needs to develop applications on mobile platforms. The course provides the practical knowledge of using Kotlin to build Android applications, implementing key features such as lists, and styling the app. It will also give the student experience of publishing an app to the Google Play Store. All of these skills are directly applicable to application development.
See salaries and explore the career path for Application Developer
Technology Specialist
A Technology Specialist focuses on a specific area of technology and applies their knowledge to help organizations solve technical problems. This role often requires deep expertise in a specific technology or platform. This course may be helpful to a technology specialist looking to specialize in Android development using Kotlin. The course provides deep dives into building Android apps using Kotlin. The course covers important steps including designing layouts, implementing lists, using Kotlin-specific features and publishing an application, which are all essential skills for a technology specialist.
See salaries and explore the career path for Technology Specialist
User Interface Developer
A User Interface Developer is in charge of building the user interface components of an application. They work to create an intuitive and appealing user experience. This course may be helpful for an aspiring user interface developer who wants to learn mobile design. This course teaches students to design layouts, work with views such as Buttons, TextViews, and EditTexts in XML files. Further, the course teaches how to style an app using themes and colors. This course provides the practical skills for a career as a user interface developer.
See salaries and explore the career path for User Interface Developer
Software Consultant
A Software Consultant provides expert advice and guidance to organizations regarding their software needs. They analyze, evaluate, and recommend software solutions that can improve business processes. This course may be helpful to a software consultant specializing in mobile application solutions. The course teaches the process of building an Android app using Kotlin. It covers everything from designing layouts, handling user interaction, and implementing lists, to publishing an app to the Google Play Store. This gives a consultant real-world experience with the mobile development process.
See salaries and explore the career path for Software Consultant
Technical Trainer
A Technical Trainer creates and delivers training programs for various technology-related topics. This role requires a solid knowledge of technical concepts and the ability to explain them clearly and concisely. This course may be useful for a technical trainer who wants to teach others about Android app development. Having hands on experience in using Kotlin to build an Android app, they will be in the best position to show the critical steps in the process. They will be better able to explain all the steps from designing layouts to publishing an application.
See salaries and explore the career path for Technical Trainer
Technology Consultant
A Technology Consultant advises clients on how to use technology to meet their business goals. They often need a broad knowledge of different technologies and development platforms. This course may be useful for a technology consultant who needs to understand the process of mobile application development. The course's focus on building an Android app using Kotlin will provide a practical example of modern app development. This understanding can help them provide better advice to their clients. It will also help the technology consultant understand the challenges that software developers face.
See salaries and explore the career path for Technology Consultant
Solutions Architect
A Solutions Architect designs and oversees the architecture of software systems. They need to understand the technical requirements and how different parts of a system interact. This course may be helpful for a solutions architect who works on projects that involve mobile applications. By understanding the steps to build an Android app using Kotlin, the solutions architect will be well positioned to design more effective and efficient systems. They will be more likely to create architecture that addresses the constraints of mobile development.
See salaries and explore the career path for Solutions Architect
Web Developer
Web Developers create and maintain websites and web applications. While they primarily work with web technologies, understanding other development platforms can be beneficial. This course may be useful for a web developer who wants to expand their skillset into mobile app development. The course teaches Android app creation using Kotlin, covering different aspects from layout design to publishing an app. These skills may help a web developer who needs to interface with mobile applications, or to understand the difference between mobile and web development.
See salaries and explore the career path for Web Developer
Product Manager
A Product Manager is responsible for guiding the strategy, roadmap, and execution of a product, and they often need to understand the technologies behind it. This course may be useful for a product manager who works with mobile applications. The course teaches the process of building an Android app using Kotlin, from the initial design to publishing it on the Google Play Store. As a result, the product manager will have a deeper understanding of the development process which will be valuable in their role.
See salaries and explore the career path for Product Manager
Project Manager
A Project Manager is responsible for planning, executing, and closing projects, often in a technical field. While they may not write code, understanding project details is crucial. This course may be helpful for project managers who need to oversee mobile app development. By learning the details of Android app development using Kotlin, including designing layouts, implementing lists and the process of publishing, project managers will be more effective when communicating with their team and making important decisions.
See salaries and explore the career path for Project Manager

Reading list

We've selected two books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in Android App Development with Kotlin.
Cover image
Kotlin in Action, Second Edition
Save
Provides a comprehensive guide to Kotlin, covering its syntax, features, and best practices. It's particularly useful for understanding how Kotlin works under the hood and how to leverage its advanced features for Android development. It serves as both a learning resource and a reference guide for Kotlin developers. This book is commonly recommended for those transitioning from Java to Kotlin.
Kotlin in Action, Second Edition
Paperback
$$$
Cover image
Head First Android Development
Save
Provides a beginner-friendly introduction to Android development concepts. While it may not focus specifically on Kotlin, it provides a solid foundation in Android architecture, UI design, and common development patterns. It's helpful for those new to Android development to understand the platform before diving into Kotlin-specific implementations. This book is often used as a textbook for introductory Android development courses.
Head First Android Development
Paperback
Check
Head First Android Development
Kindle Edition
Check

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Effort
3 total hours
Via
Udemy
Instructor
Packt Publishing
Language
English
Good to know
Uses Kotlin, which reduces boilerplate and ceremonial code, making Android development easier and more effective for developers
Covers styling and publishing to the Google Play Store, which are essential steps for releasing a polished and functional Android application
Explores Kotlin features like Object Oriented features, Companion Objects, and Kotlin classes, which are useful for modern Android development
Teaches RecyclerView and CardView, which are standard components for displaying lists and data in Android applications
Requires installing software on Windows, Mac, or Linux, which may pose a barrier for learners with limited access to these operating systems
Teaches how to export a signed APK, which is necessary for publishing apps, but may require additional steps and knowledge of the Google Play Store
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