Develop Reference

Android AlarmManager not cancelling alarms correctly

I'm working on an app which will allow users to set multiple notifications, and cancel any notification they choose.
The problem I have is that when I cancel a pending intent using the AlarmManager it is cancelling all alarms. Each of my pending intents has it's own unique request code.
For instance I would call this to create the alarm and then delete:
setAlarm(5062, 1453269670) // Set alarm 1
setAlarm(5063, 1453774418) // Set alarm 2
cancelAlarm(5062) // Cancel alarm 1
cancelAlarm(5063) // Cancel alarm 2
Setting mutiple alarms always works, I can set as many as I like and they all produce the notification. However if I was to cancel alarm 1, it also cancels alarm 2.
I know that the pending intent has to be the same when setting and cancelling, and each pending intent has it's own unique request code, so I don't know why it's not working. I've spent many hours googling, but none of the suggested answers have helped me.
void setAlarm(int request_code, long alarm_time) {
Intent intent = new Intent(context, NotificationReceiver.class);
intent.putExtra("request_code", request_code);
PendingIntent pendingIntent = PendingIntent.getService(context, request_code, intent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
alarmManager.setExact(AlarmManager.RTC_WAKEUP, alarm_time, pendingIntent);
}
void cancelAlarm(int request_code) {
Intent intent = new Intent(context, NotificationReceiver.class);
intent.putExtra("request_code", request_code);
PendingIntent pendingIntent = PendingIntent.getService(context, request_code, intent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
pendingIntent.cancel();
alarmManager.cancel(pendingIntent);
}

The answer is simple
Intent firstIntent = new Intent(this, Receiver.class);
intent.setAction("action 1");
intent.putExtra("extra", "extra1");
firstPendingIntent = PendingIntent.getBroadcast(this, 0, firstIntent, 0);
Intent secondIntent = new Intent(this, Receiver.class);
intent.setAction("action 2");
intent.putExtra("extra", "extra2");
secondPendingIntent = PendingIntent.getBroadcast(this, 0, secondIntent, 0);
if you compare two PendingIntents created in ABOVE code they are NOT EQUAL
But in code BELOW:
Intent firstIntent = new Intent(this, Receiver.class);
intent.setAction("action 1");
intent.putExtra("extra", "extra1");
firstPendingIntent = PendingIntent.getBroadcast(this, 0, firstIntent, 0);
Intent secondIntent = new Intent(this, Receiver.class);
intent.setAction("action 1");
intent.putExtra("extra", "extra2");
secondPendingIntent = PendingIntent.getBroadcast(this, 0, secondIntent, 0);
if you compare two PendingIntents they gonna be EQUAL, so doesn't matter what you pass in putExtra method

Cancel alarm with notification android when app is closed

I have implemented a reminder system into my application which uses the AlarmManager provided by android. I have initialized notifications to trigger, once the alarm sets off (when the app is open or closed) but i cannot seem to switch the alarm off in either state.
I cannot seem to find my answer anywhere. Is this possible?

AlarmManager alarmManager = (AlarmManager)
getSystemService(Context.ALARM_SERVICE);
Intent myIntent = new Intent(getApplicationContext(), YourService.class);
PendingIntent pendingIntent =
PendingIntent.getBroadcast(getApplicationContext(), 1, myIntent,
PendingIntent.FLAG_UPDATE_CURRENT);
alarmManager.cancel(pendingIntent);

Stopping alarm and alarm ringtone together

I am developing an alarm app.
When it fires an alarm it throws notification with a disable button.
So when i click on the disable button it should stop the alarm ringtone and the alarm also.
so when i click on disable button it call the below method.
It stops the alarm.
But i want to know will this ringtone alive for next date with same time or it will remove the alarm forgood?
public void dismissRingtone() {
// stop the alarm rigntone
Intent i = new Intent(this, RingtonePlayingService.class);
stopService(i);
// also dismiss the alarm to ring again or trigger again
AlarmManager aManager = (AlarmManager) getSystemService(ALARM_SERVICE);
Intent intent = new Intent(getBaseContext(), AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
aManager.cancel(pendingIntent);
// Canceling the current notification
NotificationManager notificationManager =
(NotificationManager)getSystemService(getApplicationContext().NOTIFICATION_SERVICE);
notificationManager.cancel(321);
}

Try, it will cancel future alarms.
Intent intentAlarm = new Intent(this, AlarmReceiver.class);
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
// Set the alarm for a particular time.
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 1, intentAlarm, PendingIntent.FLAG_UPDATE_CURRENT);
try {
pendingIntent.cancel();
alarmManager.cancel(pendingIntent);
} catch (Exception e) {
e.printStackTrace();
}

issue while canceling the notification via alarmManger

I have a Notification that is triggered by an AlarmManager. This is my code:
notification = new NotificationCompat.Builder(getActivity());
AlarmManager alarmManager = (AlarmManager) getActivity().getSystemService(Context.ALARM_SERVICE);
Intent notificationIntent = new Intent("android.media.action.DISPLAY_NOTIFICATION");
notificationIntent.addCategory("android.intent.category.DEFAULT");
PendingIntent broadcast = PendingIntent.getBroadcast(getContext(), 5000, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
alarmManager.setExact(AlarmManager.RTC_WAKEUP, 10000, broadcast);
alarmManager.cancel(broadcast);
// here am trying to cancel the notification with PendingIntent but its not working
EDIT:
by working i meant its not canceling the notification at is supposed to

use
PendingIntent.getBroadcast(getContext(), 5000, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT).cancel();
instead of alarmManager.cancel(broadcast)
thanks to these post Cancelling a PendingIntent

Cancel alarm with different context

I've a alarm created in an OnBootReceiver like this:
public class OnBootReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Calendar cal = Calendar.getInstance();
cal.add(Calendar.SECOND, 10);
Intent i = new Intent(context, AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, i, PendingIntent.FLAG_CANCEL_CURRENT);
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), savedIntervalAutomaticMilisInt, pendingIntent);
}
}
But to cancel it, I use this code in an Activity:
Intent intent = new Intent(this, AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.cancel(pendingIntent);
scManager.clearErrors();
So to set it up I use the context from the BroadcastReceiver's Context parameter, but to cancel it I use the this context from the Activity. My question: Will the alarm still be cancelled, even though the context is slightly different?

Will the alarm still be cancelled, even though the context is slightly different?
Context does not matter in this case -- it is merely a way to get to an AlarmManager.
Your choice of PendingIntent.FLAG_CANCEL_CURRENT in your cancel-the-alarm logic may cause a problem. If you run into difficulties (e.g., adb shell dumpsys alarm indicates your alarm survived the cancel), try replacing PendingIntent.FLAG_CANCEL_CURRENT with 0.

Give this a try for a global (application-wide) context object: android.content.ContextWrapper.getApplicationContext()