Sending data from service to activity?

Question

I want to schedulers background service to run a scan method. so the service will update the number of scanned file. how can i handle the case that i closed the app schedulers run the service, the update ui method will crash and stop running the service.

Answer 1

According to my case

I changed the structure to let the service to send a broadcast and receive it in the activity.

Answer 2

See this link. Its a very good example of Service. It illustrates both way communication.