Open Android Studio 3.3.2 or later, and choose Open an existing Android Studio project. Getting Startedĭownload the starter project using the Download materials button at the top or bottom of the tutorial. If you’re completely new to Kotlin, XML or Android Studio, you should take a look at the Beginning Android Development Series and Kotlin For Android: An Introduction before you start. This tutorial assumes you’re familiar with the basics of Android development. You’ll need to use Kotlin 1.3.21 or later and Android Studio 3.3.2 or later. In addition, you’ll use the Kotlin programming language and Android Studio 3.3. The way to manage configuration changes and persist data within your activity.The various stages in the lifecycle of an activity and how to handle each stage gracefully.The process for creating, starting and stopping an activity, and how to handle navigation between activities.You’ll create a to-do list app named Forget Me Not and along the way learn: In this Introduction to Android Activities Tutorial, you’ll dive into how to work with activities. In short, activities are one of the basic building blocks of an Android application. Activities are where all the action happens, because they are the screens that allow the user to interact with your app.
Actually, the first thing you do is create an Activity.
When you make an Android app, it’s likely that the first thing you’ll do is plot and plan how you’ll take over the world. Programmers with Swift programming experience will also find much that is familiar when learning Kotlin.Note: The sample code for this tutorial has been updated to be compatible with Android Studio 3.3.2 or later. Consequently, those familiar with programming in Java will find many of these skills to be transferable to Kotlin-based development. Kotlin’s creators also acknowledged that while there were ways to improve on existing languages, there are many features of Java that did not need to be changed. This compatibility also allows existing Java frameworks and libraries to be used seamlessly from within Kotlin code and also for Kotlin code to be called from within Java. When Kotlin code is compiled it generates the same bytecode as that generated by the Java compiler enabling projects to be built using a combination of Java and Kotlin code. Rather than try to re-invent the wheel, Kotlin is design to both integrate with and work alongside Java. Since acquiring the Android operating system, Google has invested heavily in tuning and optimizing compilation and runtime environments for running Java-based code on Android devices. Until the introduction of Kotlin, it is quite likely that every Android app available on the market was written in Java. Originally introduced by Sun Microsystems in 1995 Java is still by far the most popular programming language in use today.
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