The meaning of "_subscriptions.add(tapEventEmitter.connect());"?

[fantianwen]

this is a segment of class RxBusDemo_Bottom3Fragment appears about line 77

and ,I want to know why it wrote like that,and whether that:

could

_subscriptions.add(tapEventEmitter.connect());

be replaced by only

tapEventEmitter.connect();

as I only want to emmit the items to its subscribers

Thank you very much ! :)

[Kaushik Gopal]

why it wrote like that,
_subscriptions.add(tapEventEmitter.connect());

the advantage with adding it to _subscriptions is so that, when we exit the fragment/activity we can dispose off the subscriptions by unsubscribing. Have a look at line 84 where we do this onStop.

as I only want to emmit the items to its subscribers

I don't entirely understand what you mean here, but you technically are only emitting the "event"s to your subscribers. So that shouldn't be an issue.

Glad to help. I'm closing this issue, feel free to re-open if you have clarifications. Cheers!