Android Programming in Kotlin: Starting With An App

Book Description

Whether you are a professional programmer or a hobbyist, programming an Android app is an attractive proposition. Android firmly dominates the global smartphone market, meaning many potential users. All the tools you need are free to download and use and it’s easy to get started as Android Studio will build you a Hello World app in a few minutes. What you do next is more difficult as Android is a tough system to master and to create a good app you need a feel for how the system works and its limitations. The good news is that Kotlin is a language that makes working with Android much easier.

Android Programming In Kotlin: Starting With An App shows you how common tasks are done in Android Studio 3 using Kotlin, pointing out where necessary how this differs from the Java approach. Given that you can’t avoid Java altogether it also explains how Kotlin can work with the Java-based Android SDK. Although Android development seems confusing at first, it has patterns which mean that having done something once you can generalize the approach to components you haven’t previously encountered.

This book doesn’t set out to be a complete treatment of Kotlin or Android. Instead it focuses on the things you need to know to write an app with a single Activity and a UI, a good foundation for further Android programming. Particular attention is paid to creating the user interface (UI) because this is what you spend most of your time working on even if the app in question is sophisticated. There are plenty of examples in this book but they are deliberately simple, stripped down to let you see what is essential.

中文：

书名：Kotlin的Android编程：从应用程序开始

无论你是专业程序员还是业余爱好者，编写Android应用程序都是一个诱人的命题。安卓牢牢主导着全球智能手机市场，这意味着许多潜在用户。你需要的所有工具都可以免费下载和使用，而且入门很容易，因为Android Studio会在几分钟内为你构建一个Hello World应用程序。你下一步要做的就更难了，因为Android是一个很难掌握的系统，要想创建一个好的应用程序，你需要对该系统的工作原理及其局限性有所了解。好消息是，Kotlin是一种让使用Android变得容易得多的语言。

Kotlin的Android编程：从应用程序开始 向您展示了如何在Android Studio3中使用Kotlin完成常见任务，并指出了这与Java方法有何不同。鉴于您不能完全避免使用Java，这也解释了Kotlin如何使用基于Java的Android SDK。尽管Android开发乍一看似乎令人困惑，但它具有一些模式，这意味着一旦完成了某项工作，就可以将方法推广到您以前从未遇到过的组件。

这本书并不是对Kotlin或Android的全面介绍。相反，它专注于编写具有单一活动和用户界面的应用程序所需了解的事项，这为进一步的Android编程奠定了良好的基础。特别注意创建用户界面(UI)，因为这是您花费大部分时间工作的地方，即使所讨论的应用程序是复杂的。这本书中有很多例子，但它们都刻意简单，只为了让你明白什么是关键。