aman
5/3/2019 - 5:42 PM

Observer Pattern - Using Event Bus

Readme.md
content_copyfile_download
  • Rendered
  • Source

EventBus is a singleton

Every Event bus has event emitters which emit events and there are event Subscribers that actually listen to particular events based on the type of data they are expecting

Event Emitter --> EventBus --> Event Subscribers

subscriber.kt
content_copyfile_download
class SubscriberClass {
  fun onStart(){
    EventBus.getDefault().register(this)
  }
  
  @Subscribe(ThreadMode = ThreadMode.MAIN)
  fun onEvent(event:CustomEvent){
    Log.i(event.message)
  }
}
CustomEvent.kt
content_copyfile_download
data class CustomEvent(val message:String)
Emitter.kt
content_copyfile_download
class EmitterClass {
  fun createEvent(){
    EventBus.getDefault().post(CustomEvent("This is the sample message))
  }
}