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.
- 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>
Or download EventBus from Maven Central
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.
Copyright (C) 2012-2016 Markus Junginger, greenrobot (http://greenrobot.org)
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.
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