Book Image

Kotlin Programming By Example

By : Iyanu Adelekan
Book Image

Kotlin Programming By Example

By: Iyanu Adelekan

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.

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Table of Contents (12 chapters)
Preface
Preface
Who this book is for
What this book covers
To get the most out of this book
Get in touch
Free Chapter
1
The Fundamentals
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
2
Building an Android Application – Tetris
Building an Android Application – Tetris
Android – an overview
Understanding Tetris
Creating the user interface
The app manifest
Summary
3
Implementing Tetris Logic and Functionality
Implementing Tetris Logic and Functionality
Implementing the Tetris gameplay
Introduction to Model-View-Presenter (MVP)
Summary
4
Designing and Implementing the Messenger Backend with Spring Boot 2.0
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
5
Building the Messenger Android App – Part I
Building the Messenger Android App – Part I
Developing the Messenger app
Summary
6
Building the Messenger Android App – Part II
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
7
Storing Information in a Database
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
8
Securing and Deploying an Android App
Securing and Deploying an Android App
Securing an Android application
Launching and publishing your Android application
Summary
9
Creating the Place Reviewer Backend with Spring
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
10
Implementing the Place Reviewer Frontend
Implementing the Place Reviewer Frontend
Creating views with Thymeleaf
Spring application testing
Summary
What next?
11
Other Books You May Enjoy
Other Books You May Enjoy
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The app manifest

The app manifest is an XML file that is present in every Android application. It is located in the manifests of an application's root folder. The manifest file holds crucial information pertaining to an application on the Android operating system. The information contained in an application's androidManifest.xml must be read by the Android system before an application can be run. Some of the information that must be registered in the app manifest are:

  • The Java package name for the application
  • The activities present in the application
  • Services that are used in the application
  • Intent filters that direct implicit intents to an activity
  • Descriptions of the broadcast receivers used in the application
  • Data pertaining to content providers present in the application
  • The classes that implement the various application components
  • The permissions that are required...
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