Reactive Programming on Android with RxJava_468 x 60 copy 2.png

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RxJava

Since its inception in 2012, RxJava has slowly gained in popularity for enabling reactive programming on Android. It is now deemed as the go-to and leading reactive library. Many companies have adopted the reactive way of programming, including Google, with its release of Android Architecture Components, which has many reactive elements in its design.

In this course, you will learn the fundamental principles of RxJava which will serve as a foundation for experienced Android developers who are new to the library and want to start integrating it into their apps.

Reactive Programming with RxJava

## Disposable
So far, we have overlooked a key component in a reactive stream: the `Disposable`. A `Disposable` is returned as a result from a subscription so that we can control when to unsubscribe. This is so that the underlying `Observable` can stop emitting events. Failure to do so can cause unwanted memory leaks that are hard to trace.

When dealing with the `Activity` or `Fragment` lifecycle, a good place to unsubscribe would be when the `Activity` or `Fragment` is no longer needed—that is, in the `.onDestroy()` lifecycle.

# Disposable
So far, we have overlooked a key component in a reactive stream: the `Disposable`. A `Disposable` is returned as a result from a subscription so that we can control when to unsubscribe. This is so that the underlying `Observable` can stop emitting events. Failure to do so can cause unwanted memory leaks that are hard to trace.

When dealing with the `Activity` or `Fragment` lifecycle, a good place to unsubscribe would be when the `Activity` or `Fragment` is no longer needed—that is, in the `.onDestroy()` lifecycle.

Take a look at various libraries used to unsubscribe from an Observable.

Getting Started

Part 1: RxJava Basics

Reactive Programming

RxJava Core Components

Operators

Multithreading

Part 2: RxJava Advanced

Reactive Modeling on Android

Backpressure

Error Handling

Conclusion

Disposable and the Activity/Fragment Lifecycle

Disposable