Develop Reference

Delete Alarm with a unique ID

I do have a NoteApp, where you can set reminder.
I want to implement that you can cancel the alarm.
My problem is I cant find any tutorial how to do this.
I've set an unique ID and saved it into the SQLite Database.
So when I click on Dialog "Yes" it should cancel the Alarm.
Here I set the alarm:
Intent i = new Intent(NeueNotiz.this,NoteNotification.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(NeueNotiz.this, (int) System.currentTimeMillis(),i,0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
isAlarmSet(true,String.valueOf(cal_new.getTimeInMillis()));
alarmManager.setExact(AlarmManager.RTC_WAKEUP,cal_new.getTimeInMillis(),pendingIntent);
I have absolutely no clue.
Help please

AlarmManager alarmManager = (AlarmManager)
getSystemService(Context.ALARM_SERVICE);
Intent myIntent = new Intent(getApplicationContext(),
SessionReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(
getApplicationContext(), 1, myIntent, 0);
alarmManager.cancel(pendingIntent);
See How to cancel alarm from AlarmManager link for more info.

How to set an alarm for every 1 minute, for same say only in android?

I made one application with Android native. I'm using AlarmManager for achieving every 1-minute track data.
AlarmManager alarmManager=(AlarmManager) getApplicationContext().getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(getApplicationContext(), AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, intent, 0);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,System.currentTimeMillis(),100000,pendingIntent);
But I want that it must stop on specific time like today 12 P.M. or whatever time I want.
How can I achieve it by making another AlarmManager Service, or is there any other option for this?

Just check in service launched by Alarm that current time early than your specific time
if (isTimeExpired) {
AlarmManager alarmManager=(AlarmManager) getApplicationContext().getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(getApplicationContext(), AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, intent, 0);
alarmManager.cancel(pendingIntent);
}

cancel the scheduled android notification

I have scheduled android notifications using alarm manager but I couldn't cancel the notification where I tried to cancel it using this notificationManager.cancelAll(); does not work and then I tried to cancel alarm manager itself, unfortunately, does not work.
Does anyone know how to cancel scheduled notification?
This is how I set alarm manager for notification:
Intent myIntent = new Intent(DirctActivityfinal3.this, MyReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(DirctActivityfinal3.this, 0, myIntent, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, timeOff9.getTimeInMillis(), pendingIntent);
I tried this code to cancel alarm manager, but not working I still get notified
Intent intent = new Intent(ViewTicketActivity.this, DeleteNotification.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(ViewTicketActivity.this,0, intent, 0);
AlarmManager alarmManager = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
alarmManager.cancel(pendingIntent);

Your PendingIntents are not the same.
To cancel an alarm, the pending intent that you created to cancel the alarm with must be the same as the one you created the alarm with.
e,g in your example, You are passing different classes into each.
Intent myIntent = new Intent(DirctActivityfinal3.this, MyReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(DirctActivityfinal3.this, 0, myIntent, 0);
is not the same as
Intent intent = new Intent(ViewTicketActivity.this, DeleteNotification.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(ViewTicketActivity.this,0, intent, 0);
Complete Sample:
Intent myIntent = new Intent(myContext, MyReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(myContext, 0, myIntent, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
then either
alarmManager.set(AlarmManager.RTC_WAKEUP, timeOff9.getTimeInMillis(), pendingIntent);
or
alarmManager.cancel(pendingIntent);

Declare Intent, PendingIntent and AlarmManager as global variables
to cancel the scheduled
pendingIntent = PendingIntent.getBroadcast(ViewTicketActivity.this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
alarmManager.cancel(pendingIntent);

Run Broadcastreceiver for specified time

I am new to android, I want to run a task only for a specific duration, how can I do this?
I tried using broadcast receiver and AlarmManager but the broadcastreceiver continuously runs even after specified time.
long timetorun= calendarcurrent.getTimeInMillis() - calendar.getTimeInMillis();
Intent c = new Intent(getApplicationContext(),
Phonecallreceiver.class);
pintent = PendingIntent.getBroadcast(getApplicationContext(), 0, c, 0);
AlarmManager alarm = (AlarmManager) getSystemService(ALARM_SERVICE);
alarm.set(AlarmManager.RTC_WAKEUP, timetorun, pintent);

You can stop it by canceling the alarm, using the same PendingIntent like the below:
Intent c = new Intent(getApplicationContext(), Phonecallreceiver.class);
pintent = PendingIntent.getBroadcast(getApplicationContext(), 0, c, 0);
AlarmManager alarm = (AlarmManager) getSystemService(ALARM_SERVICE);
alarm .cancel(pintent);
Do not forget to make sure that the PendingIntent is not NULL.
Hope that I helped you.

How do i know if my alarm manager timer is on?

I'm using this code (from my activity) to start a periodic timer in the application:
Intent intent = new Intent(this, MyBroadcastReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this.getApplicationContext(), 234324243, intent, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(),(i * 1000), pendingIntent);
Toast.makeText(this, "Alarm set in " + i + " seconds",
Toast.LENGTH_SHORT).show();
I want to know how can i know (from a different activity) is the timer is running?

One possibility I can think of is to check if the pending Intent is defined.
You can call
PendingIntent pendingIntent = PendingIntent.getBroadcast(this.getApplicationContext(), 234324243, intent, PendingIntent.FLAG_NO_CREATE);
this will give you the pending Intent, or null if the Intent was not specified. This will not guarantee that the alarm was set but it is an easy way to check if the set alarm code was called before.
Another possibility is to save all set alarms in a SharedPreferences file. In this way you can look for all alarms set by your app in the shared prefs file.
As far as I can see there is no way to get a list of set alarms for your application from the AlarmManager

in stop function
Intent intent = new Intent(this, LocaitonSampleBroadcaseReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast( this.getApplicationContext(), 234324243, intent, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE); alarmManager.cancel(pendingIntent);
just add this:
pendingIntent.cancel();
so you can use the string wrote comment Janusz
PendingIntent pendingIntent = PendingIntent.getBroadcast(this.getApplicationContext(), 234324243, intent, PendingIntent.FLAG_NO_CREATE);