How to set multiple alarms using alarm manager in android
From the docs:
If there is already an alarm for this Intent scheduled (with the equality of two intents being defined by filterEquals(Intent), then it will be removed and replaced by this one
Multiple AlarmManagers
would not resolve your issue. If they have multiple different alarms (different times and different days), then you would need to set the alarm within the BroadcastReceiver
every time you fire off a previous alarm.
You would also need to hold RECEIVE_BOOT_COMPLETED
and have a BroadcastReceiver
to receive the boot so that if the phone is rebooted you can re-schedule your alarms.
To set multiple alarms you need to define your Intent
each time so that it is distinguishable from the others. The easiest way I find to do this is to set the data
field of your Intent
something as follows:
// give your alarm an id and save it somewhere
// in case you want to cancel it in future
String myAlarmId = ...;
// create your Intent
Intent intent = new Intent(AlarmList.this, AlarmReceiver.class);
intent.setData(Uri.parse("myalarms://" + myAlarmId));
...
The rest of your code @Hassy31 is fine as is and remains unchanged.
Note that the requestCode
parameter in the PendingIntent.getBroadcast()
method (as suggested by @parag) is unused according to the documentation so this ain't the right way to go about it.
You need to use different Broadcast id's
for the pending intents
. Something like
this:
Intent intent = new Intent(load.this, AlarmReceiver.class);
final int id = (int) System.currentTimeMillis();
PendingIntent appIntent = PendingIntent.getBroadcast(this, id, intent, PendingIntent.FLAG_ONE_SHOT);
Using the system time should be a unique identifier for every pending intent you fire.
set Broadcast id
for pendingIntent
for (int id = 0; id < 3; id++) {
// Define pendingintent
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, id,ntent, 0);
// set() schedules an alarm
alarmManager.set(AlarmManager.RTC_WAKEUP, alertTime, pendingIntent);
}