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.
Table of Contents (12 chapters)

Implementing Tetris Logic and Functionality

In the previous chapter, we embarked on the development of the classic game Tetris. We determined the layout requirements of our application and implemented the layout elements we identified. In the process, we created two activities for the application: MainActivity and GameActivity. We also implemented the basic characteristics and behaviors of the views, but nothing pertaining to the core gameplay of the app was done. In this chapter, we are going to implement this gameplay. Over the course of this chapter, you will learn about the following topics:

  • Exception handling
  • The Model-View-Presenter pattern