
Explore the Android Studio editor's features: document tabs, navigation between files, on-the-fly code analysis, and the editor gutter with breakpoints and bookmarks.
Explore the Android Studio editor with split panels for multi-file editing and orientation. Use real-time and smart code completion, parameter hints, and code generation to override on stop lifecycle methods.
Leverage Android's open, free platform to build and distribute apps without gatekeepers, making development rewarding, in demand, and capable of turning ideas into pocket-sized apps.
Start your first Android app by creating a new project in Android Studio, select empty activity, and configure name, package, and minimum API level with Kotlin and AndroidX.
Create and configure an Android Studio virtual device, select Pixel 6 Pro with an Android version, adjust ram, then run an empty project to see rapid Gradle feedback.
Learn to configure a development PC for Android app development by installing Android Studio, SDK, Kotlin plugin, and OpenJDK, meeting system requirements across Windows, Mac OS, and Linux.
Learn how to declare and initialize Kotlin variables using val and var, understanding immutable vs mutable types (integers, floats, strings, booleans) and how initialization affects compilation, and avoiding reassigning val.
Learn how Kotlin uses type inference to reduce boilerplate and omit explicit types. See how semicolons are optional and how the compiler enforces correct string and integer types.
Explore Kotlin expressions and operators, including the assignment, addition, and subtraction operators, and learn to manipulate variables through practical code examples.
Learn the addition, subtraction, division, and multiplication operators in Kotlin. Apply them with the assignment operator and the increment and decrement operators on variables.
Build an Android app example to demonstrate expressions and string templates in Kotlin by calculating age from year of birth and current year using val and var variables.
Learn how Kotlin treats data types as objects with functions and properties accessed by dot notation, and compare explicit type declarations with type inference in a statically typed language.
Explore nullable types in Kotlin, showing how a question mark after a type enables a variable to hold null values and prevents null pointer exceptions.
Learn Kotlin null-safety with the safe call operator, not-null assertions, and the Elvis operator. Then apply late init and the let function to manage nullable values and perform type checks.
Learn how Kotlin handles type casting, using safe and unsafe casts, as and is operators, and type checking tools like the Elvis operator to manage ambiguous or unknown types.
Master Kotlin comments to document and clarify code, including single-line and multi-line styles, and learn how the compiler ignores them while enabling interoperable Java code.
Learn how Kotlin uses if-else, when, and while to make decisions and control loops. Examine comparison and logical operators, including equality and not equal, with code readability tips.
Learn the Kotlin logical and and or operators and how they evaluate expressions. See how the and operator requires both parts true, while the or operator needs only one true.
Kotlin stores variables as named memory storage, letting you assign and update values, such as unread messages. Use lowercase first words and uppercase subsequent words for multi-word names.
Explore Kotlin variable types, including integer, long, float, double, boolean, char, and string, and distinguish mutable var from immutable val.
Explore Kotlin's if and else statements, including single and nested conditions, boolean variables, and string templates to produce outputs like am/pm and bridge commands.
Explore how to use nested if statements in Kotlin to model complex decisions with a boolean waving flag, initialize it, and write clear, simple decision logic.
Explore Kotlin's when statement to drive code paths based on a rating value from 1 to 5, updating a text view and text color accordingly.
Explore Kotlin loops while, do-while, and for loops, and learn when to apply each to control flow, iteration, and repeated code, illustrated with practical mini applications.
Learn to use for loops in Kotlin to iterate over lists or ranges, executing code for each element, with braces for multiple statements and a loop variable for current value.
Master Kotlin function basics: declare and call functions, manage parameters and return types, explore single expression functions and default arguments, and connect to android development and object oriented programming.
Learn how Kotlin functions declare return types and use the return keyword to produce values such as integers, floats, and strings. See examples of returning values and logging.
Explore Kotlin function design by building simple and complex bodies that perform one task, using single expression syntax, and applying default and named arguments for flexibility.
Explore declaring functions in Kotlin across member, top level, and local scopes; learn return types, unit equals Java's void, and how higher order and extension functions enable functional programming.
Explore Kotlin's single expression functions, omit braces and return types, and rely on type inference. Learn about default and named parameters to simplify calls and avoid ambiguity.
Explore the fundamentals of object oriented programming in Kotlin, including classes, constructors, and visibility modifiers, and master the core principles of encapsulation, polymorphism, and inheritance with practical examples.
Explore how Kotlin classes use functions and properties to encapsulate data and control access with getters and setters. Grasp dot syntax, backing fields, and mutability with var vs val.
Explore how Kotlin classes act as blueprints to create multiple objects. Declare and instantiate classes like Soldier, Message, and Particle System, and use constructors and variables for usable Android objects.
Explore Kotlin encapsulation by using getters and setters to guard a backing field, validate values, and compute total weight from backpack and weapon via an overridden getter.
Understand kotlin visibility modifiers to control access to variables, functions, and classes, focusing on public and private encapsulation in a satellite controller example.
Explore how protected and internal visibility modifiers shape encapsulation in Kotlin, revealing when functions and properties are visible, and how getters and setters support flexible design.
Explore Kotlin constructors, including primary constructors declared in the class and secondary constructors in the class body. Understand init blocks and the mutable versus immutable properties used in initialization.
Build three classes—carrier, shipyard, and destroyer—and simulate a sea battle using constructors, init blocks, a take damage function with private health, and logging.
Extend the worship game by implementing the should shell damage function and tag damage function, adding destroyer and carrier classes, plus shipyard repair services.
Explore object-oriented programming by building a simulated naval battle with friendly and enemy destroyers and carriers, using a shipyard to repair and manage ammo and see logs of each action.
Explore object oriented programming and inheritance with open classes, override functions, and polymorphism. Build an inheritance example app and learn the super keyword, abstract classes, and multi-level inheritance.
Explore inheritance in Android Kotlin by making a base Soldier open, creating Special Forces and Air Forces subclasses, and overriding functions like shoot and jump out of plane.
Explore Kotlin inheritance by creating a sniper class that extends a soldier and overrides shoot. Use open and super to switch to base behavior when ammo runs out.
Explore polymorphism and the power of abstract classes and functions to write cleaner, reusable code. Learn how inheritance enforces method overrides and supports polymorphic usage without instantiating abstract classes.
Explore Kotlin inheritance by defining open base classes, creating subclasses, using primary and secondary constructors, and extensions, while leveraging the super keyword in a single inheritance hierarchy.
Master object oriented design by refactoring into a ship superclass to model carrier and destroyer, using inheritance and polymorphism to enable a reusable shipyard service flow and show statistics.
*Earn the Official Certificate after Completing the Course
Why Choose Android Development with Kotlin?
Android application development has gained immense popularity in recent years, and Kotlin has quickly become the preferred language for Android development. With its concise syntax, null safety features, and seamless interoperability with existing Java code, Kotlin offers a powerful and efficient way to build robust Android applications. By mastering Kotlin, you will be equipped to create cutting-edge Android apps that deliver exceptional user experiences.
Course Overview
This Android application development course with Kotlin is designed to provide you with a step-by-step learning experience. Each module covers essential topics and hands-on exercises to reinforce your understanding. Here's a breakdown of the course curriculum:
Module 1: Introduction to Android Development
In this module, you will get an overview of Android development and the Kotlin programming language. You will set up your development environment, including Android Studio, and learn the basics of building Android applications using Kotlin.
Introduction to Android development
Setting up the development environment
Exploring Android Studio
Building your first Kotlin app
Module 2: User Interface Design
A well-designed user interface is crucial for creating engaging and intuitive Android applications. In this module, you will learn how to design user interfaces using XML and Kotlin code. You will also explore different UI components and layout techniques.
Introduction to user interface design
Creating layouts with XML
Implementing UI components
Applying styles and themes
Module 3: Data Persistence
Storing and retrieving data is a fundamental aspect of Android application development. In this module, you will explore various data storage options in Android, including SQLite databases and SharedPreferences. You will learn how to work with data efficiently and securely in your apps.
Introduction to data persistence
Working with SQLite databases
Managing data with SharedPreferences
Implementing data encryption
Module 4: Networking and Web Services
Modern Android applications often rely on network connectivity to fetch data from the web. In this module, you will learn how to interact with web services using Kotlin. You will explore techniques for making HTTP requests, parsing JSON responses, and handling network errors.
Introduction to networking in Android
Making HTTP requests with Kotlin
Parsing JSON data
Handling network errors
Module 5: Working with APIs and Libraries
Android provides a rich ecosystem of APIs and libraries that can enhance the functionality of your applications. In this module, you will discover how to integrate popular APIs and libraries into your projects. You will also learn how to manage dependencies using Gradle.
Overview of Android APIs and libraries
Integrating Google Maps API
Using Retrofit for RESTful API integration
Managing dependencies with Gradle
Module 6: Advanced Topics in Android Development
This module covers advanced topics that will take your Android development skills to the next level. You will explore topics such as background processing, notifications, multimedia, and security. By the end of this module, you will have a solid understanding of advanced Android concepts.
Background processing with services and threads
Implementing notifications and push notifications
Working with multimedia: audio and video
Ensuring app security: encryption and authentication
Module 7: Testing and Debugging
Testing and debugging are essential aspects of Android application development. In this module, you will learn different testing techniques and strategies to ensure the quality and stability of your apps. You will also discover tools and best practices for debugging and troubleshooting.
Introduction to Android testing
Unit testing with JUnit and Mockito
UI testing with Espresso
Debugging tools and techniques
Module 8: Publishing and Monetizing Your App
Once you have developed your Android application, it's time to share it with the world. In this module, you will learn how to publish your app to the Google Play Store. You will also explore strategies for app monetization, including in-app purchases
Even though Kotlin is a full-fledged functional programming language, it preserves most of the object-oriented nature of Java as an alternative programming style, which is very handy when converting existing Java code. Kotlin has classes with constructors, along with nested, inner, and anonymous inner classes, and it has interfaces like Java 8. Kotlin does not have a new keyword. To create a class instance, call the constructor just like a regular function. We saw that in the screenshot above.
Kotlin has single inheritance from a named superclass, and all Kotlin classes have a default superclass Any, which is not the same as the Java base class java.lang.Object. Any contains only three predefined member functions: equals(), hashCode(), and toString().
Kotlin classes have to be marked with the open keyword in order to allow other classes to inherit from them; Java classes are kind of the opposite, as they are inheritable unless marked with the final keyword. To override a superclass method, the method itself must be marked open, and the subclass method must be marked override. This is all of a piece with Kotlin’s philosophy of making things explicit rather than relying on defaults. In this particular case, I can see where Kotlin’s way of explicitly marking base class members as open for inheritance and derived class members as overrides avoids several kinds of common Java errors.
Then, you'll learn how to create apps and run them on virtual devices through guided exercises. You'll cover the fundamentals of Android development, from structuring an app to building out the UI with Activities and Fragments and various navigation patterns. Progressing through the chapters and lectures, you'll delve into Android's RecyclerView to make the most of displaying lists of data and become comfortable with fetching data from a web service and handling images. You'll then learn about mapping, location services, and the permissions model before working with notifications and how to persist data. Moving on, you'll get to grips with testing, covering the full spectrum of the test pyramid. You'll also learn how AAC (Android Architecture Components) are used to cleanly structure your code and explore various architecture patterns and the benefits of dependency injection. The core libraries of RxJava and Coroutines are covered for asynchronous programming. The focus then returns to the UI, demonstrating how to add motion and transitions when users interact with your apps. Towards the end, you'll build an interesting app to retrieve and display popular movies from a movie database, and then see how to publish your apps on Google Play. By the end of this course, you'll have the skills and confidence needed to build fully-fledged Android apps using Kotlin.
Are you trying to start a career in Android programming, but haven't found the right way in? Do you have a great idea for an app, but don't know how to make it a reality? Or maybe you're just frustrated that to learn Android, you must already know Kotlin. If so, then this course is for you
When Android first arrived in 2008, it was a bit drab compared to the much more stylish iOS on the Apple iPhone/iPad. But, quite quickly, through a variety of handset offers that struck a chord with practical, price-conscious consumers, as well as those who are fashion-conscious and tech-savvy, Android user numbers exploded. For many, myself included, developing for Android is the most rewarding pastime and business, bar none. Quickly putting together a prototype of an idea, refining it, and then deciding to run with it and wire it up into a fully-fledged app, is such an exciting and rewarding process. Any programming can be fun – I have been programming all my life – but creating for Android is somehow extraordinarily rewarding..
Kotlin is the most succinct language, and therefore is the least error-prone, which is great for beginners. Kotlin is also the most fun language, mainly because the succinctness means you can get results faster and with less code. Google considers Kotlin an official (first-class) Android language. There are some other advantages to Kotlin that make it less error-prone and less likely to make mistakes that cause crashes. We will discover the details of these advantages as we proceed.
Kotlin is an object-oriented language. This means that it uses the concept of reusable programming objects. If this sounds like technical jargon, another analogy will help. Kotlin enables us and others (like the Android API development team) to write code that can be structured based on real-world things, and here is the important part – it can be reused.