If that code is everything your Service does you can completely get rid of the Service.
The only thing the service does is schedule a Broadcast once a day on the alarm manager, why not do this schedule directly from the Activity?
edit:
Given your comment, my original answer remains:
The Alarm set on the AlarmManager is permanent until the device is turned off or rebooted.
So you can set the first alarm via Activity
and mark it as active on the SharedPreferences
. Create a BroadcastReceiver
to receive onBoot events, this receiver will check the SharedPreferences
for if the alarm is active and in case it is, re-register it on the AlarmManager.
Your service still does the same ContentObserver stuff, but have no association with the recurring AlarmManager event.
I reckon that would be cleanest solution.
Alternatively (but I don't think it's a good/clean solution), you can use the AlarmManager.cancel()
to remove the existing PendinIntent, and then re-trigger it