您可能要考虑使用事件驱动的模型，例如GreenRobot.

You may want to consider using an Event driven model such as GreenRobot.

http://greenrobot.org/eventbus/

这将使您能够有效地处理您描述的情况.

This would allow you to efficiently handle the scenario you describe.

或者，您可以使用LocalBroadcastManager在应用程序的不同部分之间进行通信.

Alternatively, you can use the LocalBroadcastManager to communicate between different parts of your app.

例如，当您要显示对话框并在所有活动中处理该消息时，发送广播消息

e.g Send a broadcast message when you want to display a dialog and handle that message in all of your Activities