Subscribe to different event bus in same class

Question

I am using the GreenRobot Event Bus 3.0 as an event bus and I have 2 publishers:

 private static final EventBus EVENT_BUS = new EventBus();

//Publish event to the event bus
public static void sendEvent(LoggingEvent event){
    LogPublisher.EVENT_BUS.post(event);
}

//Publish event to the event bus
public static void sendEvent(OtherLoggingEvent event){
    LogPublisher.EVENT_BUS.post(event);
}

I have 2 subscribers:

 @Subscribe(threadMode = ThreadMode.ASYNC)
    public void onEvent(LoggingEvent event){
        logEvent( event);
    }

 @Subscribe(threadMode = ThreadMode.ASYNC)
    public void onEvent(OtherLoggingEvent event){
        logEvent( event);
    }

The issue is when make a call like:

MyPublisher.sendEvent(new OtherLoggingEvent(varA, varB, varC));

Both subscribers are called and I can't figure out why. I think it might have something to do with the fact that OtherLoggingEvent is a subclass of LoggingEvent, but I'm not sure. My question then becomes how do I maintain a 1-1 relationship with the publisher and subscriber. I want to call:

MyPublisher.sendEvent(new OtherLoggingEvent(varA, varB, varC));

and have the subscriber public void onEvent(OtherLoggingEvent event) called and when I call:

MyPublisher.sendEvent(new LoggingEvent(varD, varE, varF));

the subscriber:

 public void onEvent(LoggingEvent event)

will be called? Will this work as is, but have to make sure that the classes are unique, and not a subclass of each other? Do I have to create a new EventBus object?

I suggest you to create a new instance of EventBus while posting updates as : **EventBus.getDefault().post(something_here)**. — Sanjog Shrestha, Apr 07 '17 at 05:34

score 4 · Accepted Answer · edited Apr 07 '17 at 08:54

4

Both subscribers calling because of the event class inheritance. But you can switch off this eventInheritance feature in EventBus itself. By using this method:

EventBus BUS = EventBus.builder().eventInheritance(false).installDefaultEventBus();

edited Apr 07 '17 at 08:54

BlackHatSamurai

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answered Apr 07 '17 at 08:17

Krish

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This is perfect! Thank you! I thought it might have something to do with the fact that one of the subscribing classes inherited from the other. This worked like a charm, just the way I need it to. – BlackHatSamurai Apr 07 '17 at 08:30

Subscribe to different event bus in same class

1 Answers1