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)

Working with content providers

We spoke briefly about content providers as Android components in Chapter 2, Building an Android Application - Tetris. While doing so, we established the fact that content providers help an application control access to data resources stored either within the application or within another app. In addition, we established that a content provider facilitates the sharing of data with another application via an exposed application programming interface.

A content provider behaves in a way that is similar to the behavior of a database. A content provider permits the insertion, deletion, editing, updating, and querying of content. These abilities are permitted by the use of methods such as insert(), update(), delete(), and query(). In many cases, data controlled by a content provider exists in a SQLite database.

A content provider for your application...