[EventBus] Help

1. Add dependencies: compile 'org.greenrobot:eventbus:3.1.1'

 

2. Create a message class

 

3.

override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate (savedInstanceState)
        setContentView(R.layout.activity_event_bus)

        EventBus.getDefault().register(this)

        btn_eventbus.onClick {
            startActivity<MainActivity>()
        }
    }


    override fun onDestroy() {
        super.onDestroy ()
        EventBus.getDefault().unregister(this)

    }

    @Subscribe(threadMode = ThreadMode.MAIN)
    fun onMessageEvent(event: MessageEvent) {
        Toast.makeText(this,"test received event message", Toast.LENGTH_LONG)
        btn_eventbus.text = event.message
        Log.d("test", "test")
    }

 The process is registration--->accept--->logout

Note that where you register, you need @Subscribe or will you report an error

 

4. Send information:

class EventPresent {

    fun sendMessage(){
        println("================")
        EventBus.getDefault().post(MessageEvent("test event send"))
    }
}

 In this way, the Activity of EventBus can receive the information of the post

 

refer to:

1.http://blog.csdn.net/itachi85/article/details/52205464