EventBus

EventBus is a publish/subscribe event bus optimized for Android.

EventBus...

simplifies the communication between components
- decouples event senders and receivers
- performs well with Activities, Fragments, and background threads
- avoids complex and error-prone dependencies and life cycle issues
makes your code simpler
is fast
is tiny (~50k jar)
is proven in practice by apps with 100,000,000+ installs
has advanced features like delivery threads, subscriber priorities, etc.

EventBus in 3 steps

Define events:
public class MessageEvent { /* Additional fields if needed */ }
Prepare subscribers
Register your subscriber (in your onCreate or in a constructor):
eventBus.register(this);

Declare your subscribing method:
@Subscribe
public void onEvent(AnyEventType event) {/* Do something */};
Post events:
eventBus.post(event);

This getting started guide shows these 3 steps in more detail.

Please ensure that you are using the latest version by checking here

Gradle:

    compile 'org.greenrobot:eventbus:3.0.0'

Maven:

<dependency>
    <groupId>org.greenrobot</groupId>
    <artifactId>eventbus</artifactId>
    <version>3.0.0</version>
</dependency>

For more details on EventBus please check EventBus' website. Here are some direct links you may find useful:

How does EventBus compare to other solutions, like Otto from Square? Check this comparison.

EventBus binaries and source code can be used according to the Apache License, Version 2.0.

greenrobot-common is a set of utility classes and hash functions for Android & Java projects.

greenDAO is an ORM optimized for Android: it maps database tables to Java objects and uses code generation for optimal speed.

Follow us on Google+ or check our homepage to stay up to date.