How to learn Kotlin: A guide for beginners & Android developers DEV Community

With Android Studio, you can test applications either on an emulator or directly on the device. Kotlin is becoming the preferred option by app developers, and Google has even announced that Kotlin is the language of choice. Today, we’ll walk you through a tutorial on how to build an Android app using Kotlin. Sean has a decade of experience as a startup engineer in San Francisco where he learned how to build successful apps. Sean is passionate about building high quality products – quickly.

You’ll use all the popular view types with a focus on the ContraintLayout. Learn to architect and develop Android apps in the Kotlin programming language using industry-proven tools and libraries. This course on Android App Development with Kotlin – Live is a completely beginner-friendly course that has each and every basic to advanced level concept covered. It is a pocket-friendly course that anyone can study, be they students or working professionals. https://www.globalcloudteam.com/ is in great demand and hence, enrolling in this course increases your demand as a developer as well.

Kotlin rises to the Tiobe top 20

So here’s the complete guide to learn Kotlin, specifically for Android Application Development. You might think you’ve now made your first Kotlin android app, but in truth there’s actually very little Kotlin programming here. Rather, we are relying mostly on the XML for the appearance, and the Android SDK for the performance. “setText” for example is not an example of Kotlin, but rather it is part of an Android class (TextView). That is to say that Kotlin itself doesn’t support these types of buttons and text labels but is simply being used for the structure in this case. Google announced that Android development is Kotlin-first, and 60% of professional Android developers have already adopted the language.

Recycler View has been – and continues to be – an essential component of any app design. This lesson is all about making your app better with Recycler Views. With Architecture Components you’ll have the power to design even the most complicated app ideas. Combine ViewModels with LiveData to build this super fun “Guess it” game. Support for multiplatform programming is one of Kotlin’s key benefits. It reduces time spent writing and maintaining the same code for different platforms while retaining the flexibility and benefits of native programming.

kotlin-opengl-testing

Submit your profile to ensure your profile is on par with leaders in your field. Ensure your profile attracts relevant leads that will grow your professional network. We’re a place where coders share, stay up-to-date and grow their careers. This signature defines a function named fibonacci with one input parameter named index of type Int and a return value of type Long. In other words, you give the function an integer and get back a Long.

What we can also do with variables though, is to pass them between functions. When we do this, we call it an “argument.” This essentially lets us pass an input into our function, to change the output. What we really want to do though, is to change the answer that shows depending on the button that gets clicked. We could do this with a second function, but better yet would be to place both messages inside a single function. There’s only one question, and the answer is mapped to a single button.

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Therefore, it can be a great way to learn about modern programming language features that you will encounter in other languages as well, such as TypeScript, Scala, Go or Rust. Android Studio comes with the Android Software Development Kit (SDK), which is a crucial part of Android development. It includes a files and libraries for creating Android apps as well as tools like the virtual device manager and ADB bridge. Designing your app’s UI is the first step to a great user experience.

It is an expressive and concise programming language that is good for easy integration with other apps. If you’re a newbie who’s just stepping into the world of Android app development, Kotlin is the perfect choice which is the most preferred one and also the easiest one to learn. You https://www.globalcloudteam.com/10-reasons-why-you-need-kotlin-development-company/ should start from the basics thoroughly from its syntax, and design, and later move on to the big projects, later while learning you’ll find it easier. If you have a good handle on Kotlin basics, a good next step is Educative’s course Modern Android App Development with Kotlin.

Kotlin functions

However, in Kotlin, all types of variables are non-nullable by default. So if you try to assign or return null values, Kotlin will catch NPEs at compile time. Kotlin has great support because it’s backed by JetBrains, a company that specializes in creating some of the most used IDEs in the world. With a strong community behind the language and tools, you’ll always have support when you need it.

• However, its usage for developing server-side applications for the JVM is increasing.
• “setText” for example is not an example of Kotlin, but rather it is part of an Android class (TextView).
• When you build Android apps, you’ll need to create layouts using XML and the visual designer, and then define how those elements work in the corresponding Kotlin or Java code.
• It’s concise, safe, interoperable with Java and other languages, and provides many ways to reuse code between multiple platforms for productive programming.
• This Kotlin for Android Tutorial can also be used as an ‘entry point’ for Android App Development.
• Single characters are denoted using single quotes ”, whereas basic strings use double quotes “”.

Kotlin is a modern but already mature programming language designed to make developers happier. It’s concise, safe, interoperable with Java and other languages, and provides many ways to reuse code between multiple platforms for productive programming. This course is purely made for individuals who want to build their skills in creating robust and high-performance Android applications. It is designed in such a way that will take you from the fundamentals of Android app development.

What to learn next

We have an exclusive offer for you where you can access the complete course at a pocket-friendly price and become an Android developer. Jetpack Compose, Android’s modern UI toolkit is our greatest commitment to Kotlin so far, as it’s Kotlin-only. It’s powered by a Kotlin compiler plugin, and it makes extensive use of advanced language features like coroutines, top-level functions, and trailing lambdas.

Kotlin is multi-platform language, i.e. easily executable on a Java Virtual Machine. DEV Community — A constructive and inclusive social network for software developers. By the end of the course, you’ll have the hands-on experience you’ll need to make your own Kotlin apps. There can be any number of else-if blocks (including zero) and up to one else-block.

Kotlin beyond Android

Place this code inside the onCreate function (that’s all the code in the curly brackets following the word onCreate). In Kotlin, like Java, code can be “blocked” together by placing it inside curly brackets. This grouping is useful if we want a specific set of code to run outside of a linear path for example. Taught the basic Kotlin app development using a very simple application. Learning to code for the first time can feel intimidating, but it is possible to learn without a technical background.