android - Difference between AlarmManager and ScheduledExecutorService -


besides setting , exact time (i.e. midnight) versus setting delay (i.e. 24 hours), what's difference between using alarmmanager , scheduledexecutorservice run task periodically?

in case, need run little bit of code check new data every night , create new notification if there new data.

thanks!

scheduledexecutorservice runs in application process. if application process dies, none of scheduled tasks run. hence need service (so process lives beyond activities active part of lifecycle).

while alarmmanager critical system service runs time. , if application scheduled , killed, alarmmanager may start application again (via pendingintent).

and last major difference no 1 mentioned here alarmmanager knows wakelocks , power management. means alarmmanager may wake android device @ specified time run scheduled task. while scheduledexecutorservice knows nothing power management , start task when device not in deep sleep (i.e. can miss time).


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