Its not a stupid question. Other people also stumbled upon this. On your EventBus a PlaceChangeEvent is fired when you want to switch places. The ActivityManager listens for this event and calls Activity.start() on the new activity. That means Activity.start() is called inside an event dispatch and while the SimpleEventBus dispatches events all newly added handlers are queued until the SimpleEventBus is done. When all events are done SimpleEventBus merges the queue of newly added handlers into the list of all handlers. Then these newly added handlers can be considered "active" and they will start receiving events.
So when you add handlers to the SimpleEventBus inside Activity.start() these handlers are active AFTER Activity.start() returns and all other events have been dispatched by the SimpleEventBus. When you use a deferred command all code inside that command is delayed until the regular code completes. In that case your command will be executed after Activity.start() has returned and the event dispatch of PlaceChangeEvent is done. Thus the handlers are active now and the code inside your command "suddenly" works. -- J. -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit+unsubscr...@googlegroups.com. To post to this group, send email to google-web-toolkit@googlegroups.com. Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. For more options, visit https://groups.google.com/groups/opt_out.