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Answer : I've finally fixed this issue myself, after struggling for a couple of hours (but felt a lot longer!). The breakthrough came when I actually cloned the Flutter Plugins Github repository that contains android_alarm_manager and poked around the example code and looked at how it was laid out in an IDE, rather than looking at isolated files online. The Readme is not very clear on what exactly to do, if you're not versed in Android Java development, but it becomes clear when you look at the working example code. You need to drop in the Application.java file they give you in the example directory into your actual project, in the same folder as your existing MainActivity.java file. The contents should look like this: package io.flutter.plugins.androidalarmmanagerexample; import io.flutter.app.FlutterApplication; import io.flutter.plugin.common.PluginRegistry; import io.flutter.plugin.common.PluginRegistry.PluginRegistrantCallback; import io.flutter.plugins.Genera...

Answer : if you are canceling previous alarms then in PendingIntent your flag should be PendingIntent.FLAG_CANCEL_CURRENT . It will prevent generating a new PendingIntent if it is already created. And make sure that before setting in alarm just cancel that same PendingIntent and after that set your alarm. You should try like this: AlarmManager 2AlarmsInWeekAlarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); PendingIntent pendingIntent = PendingIntent.getService/getActivity(context, int, intent, PendingIntent.FLAG_CANCEL_CURRENT); 2AlarmsInWeekAlarmManager.cancel(pendingIntent); and then you may use set or setRepeating method. In your case it should be 2AlarmsInWeekAlarmManager.setRepeating(AlarmManager.RTC_WAKEUP, "timeInMillis", "repetitionTimeInMillis", pendingintent); This guarantees that before setting an alarm will cancel all previously alarm with the same PendingIntent . Hope you got this! I think you could get an ...

Answer : Adding an intent Flag FLAG_RECEIVER_FOREGROUND https://developer.android.com/reference/android/content/Intent#FLAG_RECEIVER_FOREGROUND prior to calling the broadcast receiver should do the trick Intent intent = new Intent(context, ScheduleAllReceiver.class); intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND); PendingIntent scheduleAllPendingIntent = PendingIntent.getBroadcast(context, SCHEDULER_DAILY_ALL, intent, PendingIntent.FLAG_UPDATE_CURRENT); I have faced the similar problems. I tried with work manager but the result was same. When phone is locked and is in doze mode the event are not triggered. But for triggering event at exact time you need to use alarm manager only. It should work even in doze mode. Method to register alarm manger (use set exact time instead of repeating) public static void registerAlarm(Context context){ final int FIVE_MINUTES_IN_MILLI = 300000; final int THIRTY_SECOND_IN_MILLI = 30000; long launchTime = System.currentTimeMill...