How to send a message from one service to two or more activities?

Question

Java

There is a service, it sends to activation through Message and
Handler. If I add a second activity and try to send a message through the same service to the first and second activities, the whole phone dies and it can only be revived after a reboot. I am making a second Handler. Is it possible to send a message from one service to different activities and how do normal people do it?)

Answer 1

Why send messages to two activities? It is visible and works at one point in time, after all, only one activity ?! In general, to send messages to more than one recipient, there is a sendBroadcast () method and, accordingly, BroadcastReceiver