进程内发送消息 强制接收到消息的顺序和发送顺序一致 @param value 发送的消息

return an iterator with additions.

determine when the observer is active, means the observer can receive message the default value is CREATED, means if the observer's state is above cre

determine when the observer is active, means the observer can receive message the default value is CREATED, means if the observer's state is above cre

determine when the observer is active, means the observer can receive message the default value is CREATED, means if the observer's state is above cre

Called when the number of active observers change to 1 from 0. <p> This callback can be used to know that this LiveData is being used thus should be k

Called when the number of active observers change from 1 to 0. <p> This does not mean that there are no observers left, there may still be observers b

进程内发送消息 @param value 发送的消息

进程内发送消息 @param value 发送的消息

Removes the given observer from the observers list. @param observer The Observer to receive events.