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Android - Basic Steps (Alarms)

Alarms

  • Remain active even if the device is asleep
  • Are canceled on device shutdown/restart

AlarmManager

  • To get a reference use
    • getSystemService(Context.ALARM_SERVICE)

Methods

  • Create Alarm
    • set(...)
  • Repeat
    • setRepeating()
    • setInexactRepeating()

Alarm Type Constants

  • RTC_WAKEUP - Execute the task at specific wall clock time. Wake up the device
    • Use System.currentTimeMillis() to calculate the time
  • RTC - Execute the task at specific wall clock time. Not wake up the device
  • ELAPSE_REALTIME - (time since boot, including sleep)
    • Use SystemClock.elapsedRealtime() to calculate the time
  • ELAPSE_REALTIME_WAKEUP - 

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