EventBus is an open-source library for Android using the publisher/subscriber pattern to solve the problem of loose coupling. EventBus enables central communication to decoupled classes with just a few lines of code – simplifying the code, removing dependencies, and speeding up app development.
EventBus is an open-source library for Android using the publisher/subscriber pattern to solve the problem of loose coupling. EventBus enables central communication to decoupled classes with just a few lines of code – simplifying the code, removing dependencies, and speeding up app development.
Benefits using EventBus: It…
- 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
- is fast; specifically optimized for high performance
- is tiny (<50k jar)
- is proven in practice by apps with 100,000,000+ installs has advanced features like delivery threads, subscriber priorities, etc.
Further EventBus Features
- Convenient Annotation based API: Convenient Annotation based API: Simply put the @Subscribe annotation to your subscriber methods. Because of a build time indexing of annotations, EventBus does not need to do annotation reflection during your app’s run time.
- Android main thread delivery: When interacting with the UI, EventBus can deliver events in the main thread regardless how an event was posted.
- Background thread delivery: If your subscriber does long running tasks, EventBus can also use background threads to avoid UI blocking.
- Event & Subscriber inheritance: In EventBus, the object oriented paradigm apply to event and subscriber classes. Let’s say event class A is the superclass of B. Posted events of type B will also be posted to subscribers interested in A. Similarly the inheritance of subscriber classes are considered.
- Jump start: You can get started immediately – without the need to configure anything – using a default EventBus instance available from anywhere in your code.
- Configurable: To tweak EventBus to your requirements, you can adjust its behavior using the builder pattern.
