How to notify foreground activiy with event from background activity?
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I have background activity in which I'm listening to Gps Location. Above it I have map activity.  
How can I notify the map activity when an event occurred in the background after the activity already started?

* I guess that this kind of question already been answered, but I tried googeling with many key words with no success, so sorry if it is duplicate. I'll appreciate references to other answer as well.  

Thanks. 


