/**
* Posts the given event to the event bus. post 函数会首先得到当前线程的 post
* 信息PostingThreadState，其中包含事件队列，将当前事件添加到其事件队列中，然后循环调用 postSingleEvent 函数发布队列中的每个事件。
*/
public void post(Object event) {
PostingThreadState postingState =
currentPostingThreadState.get(); // 得到当前线程的 post 信息PostingThreadState
List<Object> eventQueue = postingState.eventQueue;
eventQueue.add(event); // 将当前事件添加到其事件队列中
if (!postingState.isPosting) {
postingState.isMainThread = Looper.getMainLooper() == Looper.myLooper();
postingState.isPosting = true;
if (postingState.canceled) {
throw new EventBusException("Internal error. Abort state was not reset");
}
try {
while (!eventQueue.isEmpty()) { // 循环调用 postSingleEvent 函数发布队列中的每个事件
postSingleEvent(eventQueue.remove(0), postingState);
}
} finally {
postingState.isPosting = false;
postingState.isMainThread = false;
}
}
}
