After some time, sound module has no sound. Once i find out the cause, the solution is easy. Why it takes me 6 months to find the cause?
Solve on 280515.
At first, i see the service does not run. I see wrongly. Kill task needs to be real time to see it is running. Then i used debug to know it goes to play. It does but no sound. Then i see that the sp is link to the mainactivity.
The problem is not service does not start but the sp is linked to the app. Once i know the cause, i only need to create sp in the service.