Hi!
When You pass a PendingIntent to the AlarmManager, if there is already
one with the same Intent already registered the former will be
canceled and the last will be the active one. Two pending intent is
the same (in the case of an explicit intent) if the context and the
target class is the same. Extras do not count. So You can't register
the same pending intent more than once.
I've browsed through the code of the stock AlarmClock which can use
multiple alarms to see how it handles more than one alarm.
It always registers the next alarm which should be fired with
AlarmManager, and every time there is a change in the alarms or if one
is fired it recalculates which alarm comes next and registers it. So
it always uses only one PendingIntent which targets a
BroadcastReceiver which in turn fires the appropriate alarm.
I hope this helps.
Zod.
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