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Kotlin Programming By Example

By : Iyanu Adelekan

3.3 (4)

Buy this Book

Kotlin Programming By Example

3.3 (4)

By: Iyanu Adelekan

Buy this Book

Overview of this book

Kotlin greatly reduces the verbosity of source code. With Google having announced their support for Kotlin as a first-class language for writing Android apps, now's the time learn how to create apps from scratch with Kotlin Kotlin Programming By Example takes you through the building blocks of Kotlin, such as functions and classes. You’ll explore various features of Kotlin by building three applications of varying complexity. For a quick start to Android development, we look at building a classic game, Tetris, and elaborate on object-oriented programming in Kotlin. Our next application will be a messenger app, a level up in terms of complexity. Before moving onto the third app, we take a look at data persistent methods, helping us learn about the storage and retrieval of useful applications. Our final app is a place reviewer: a web application that will make use of the Google Maps API and Place Picker. By the end of this book, you will have gained experience of of creating and deploying Android applications using Kotlin.

Preface

Who this book is for

What this book covers

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Free Chapter

The Fundamentals

Getting started with Kotlin

The fundamentals of the Kotlin programming language

Advantages of Kotlin

Developing Android applications with Kotlin

Fundamentals of the web

Summary

Building an Android Application – Tetris

Android – an overview

Understanding Tetris

Creating the user interface

The app manifest

Summary

Implementing Tetris Logic and Functionality

Implementing the Tetris gameplay

Introduction to Model-View-Presenter (MVP)

Summary

Designing and Implementing the Messenger Backend with Spring Boot 2.0

Designing the messenger API

Implementing the messenger backend

Deploying the messenger API to AWS

Summary

Building the Messenger Android App – Part I

Developing the Messenger app

Summary

Building the Messenger Android App – Part II

Creating the Main UI

Creating the Chat UI

Creating the application's settings activity

Android application testing

Performing background operations

Summary

Storing Information in a Database

Working with internal storage

Working with external storage

Network storage

Working with a SQLite database

Working with content providers

Summary

Securing and Deploying an Android App

Securing an Android application

Launching and publishing your Android application

Summary

Creating the Place Reviewer Backend with Spring

The MVC design pattern

Designing and implementing the Place Reviewer backend

Managing Spring application logs with ELK

Summary

Implementing the Place Reviewer Frontend

Creating views with Thymeleaf

Spring application testing

Summary

What next?

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Building an Android Application – Tetris

In the previous chapter, we took a concise look at crucial topics pertaining to the core Kotlin language. These topics took us through the fundamentals of Kotlin as well as the powerful object-oriented programming approach to software development it puts at our disposal. In this chapter, we will put the knowledge we gained from the previous chapter to good use by developing an Android application.

In this chapter, you will learn about the following topics:

Android application components
Views
View groups
Layout constraints
Implementing layouts with XML
String and dimension resources
Handling input events

We will learn these topics through a hands-on approach by implementing the layouts and components of a classic game, Tetris, in the form of an Android application. As we are developing the game in the form of an Android application...