Book Image

Learning RxJava

By : Nield
Book Image

Learning RxJava

By: Nield

Overview of this book

RxJava is a library for composing asynchronous and event-based programs using Observable sequences for the JVM, allowing developers to build robust applications in less time. Learning RxJava addresses all the fundamentals of reactive programming to help readers write reactive code, as well as teach them an effective approach to designing and implementing reactive libraries and applications. Starting with a brief introduction to reactive programming concepts, there is an overview of Observables and Observers, the core components of RxJava, and how to combine different streams of data and events together. You will also learn simpler ways to achieve concurrency and remain highly performant, with no need for synchronization. Later on, we will leverage backpressure and other strategies to cope with rapidly-producing sources to prevent bottlenecks in your application. After covering custom operators, testing, and debugging, the book dives into hands-on examples using RxJava on Android as well as Kotlin.
Table of Contents (14 chapters)

Creating the Android project

We are going to use Android Studio for the examples in this chapter, with Android 5.1 Lollipop as our platform target. Launch Android Studio and create a new project, as shown in the following figure:

Figure 11.1: Creating a new Android project

In the next screen (shown in the following figure), name your project RxJavaApp with a Company domain of packtpub.com or whatever you prefer. Then, click on Next:

Figure 11.2

We are going to target Phone and Tablet. Since we may want our app to be compatible with devices running earlier versions of Android, let's select Android 5.1 (Lollipop) as our Minimum SDK. This will also give us an opportunity to practice using Retrolambda. After this, click on Next:

Figure 11.3

On the next screen, choose Empty Activity as our your template, as shown in the following figure. Then, click...