EventBus 学习
官方网址：http://greenrobot.org/eventbus/
Github网址：https://github.com/greenrobot/EventBus
介绍：
EventBusis an open-source library for Android using thepublisher/subscriberpattern for loose coupling（松耦合）. EventBus enables central communication to decoupled classes with just a few lines of code – simplifying the code（简化代码）, removing dependencies（解除依赖）, and speeding up app development.
Github：Android optimized event bus that simplifies communication betweenActivities,Fragments,Threads,Services,etc. Less code, better quality.
EventBus Benfit：
simplifies the communication between components
decouples（解耦） 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（优化） for high performance
is tiny (<50k jar)
isproven in practice by apps with 100,000,000+ installs
has advanced features like delivery threads, subscriber priorities（优先）, etc.
Further EventBus Features
Simple yet powerful:EventBus is a tiny library with an API that is super easy to learn. Nevertheless, your software architecture may great benefit by decoupling（解耦） components: Subscribers do not have know about senders, when using events.
Battle tested:EventBus is one of the most used Android libraries: thousands of apps use EventBus including very popular ones. Over a billion app installs speak for themselves.
High Performance:Especially on Android, performance matters（性能问题）. EventBus was profiled and optimized（优化） a lot; probably making it the fastest solution of its kind.
Convenient（方便的） 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（分发）:When interacting with the UI（当和UI交互）, 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（继承）: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（可配置）:To tweak EventBus to your requirements, you can adjust its behavior using the builder pattern.
EventBus Documentation
链接：http://greenrobot.org/eventbus/documentation/how-to-get-started/
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