Android Alarm Manager Start time

Question

I have this code, but the Alarm won't start from the beginning of time. I want myReceiver to start from the start of minutes and also repeat it from start of times . How can I achieve that?

PendingIntent pendingIntent3;
AlarmManager manager =(AlarmManager) getSystemService(Context.ALARM_SERVICE);


Intent alarmIntent3 = new Intent(getBaseContext(), myReceiver.class);
pendingIntent3 = PendingIntent.getBroadcast(getBaseContext(), 0, alarmIntent3, 0);


manager.setRepeating(AlarmManager.ELAPSED_REALTIME  _WAKEUP,
                SystemClock.currentThreadTimeMillis(),
                1*60*1000, pendingIntent3);

Answer 1

Use below code to set repeating alarm:

Intent alarmIntent3 = new Intent(getBaseContext(), myReceiver.class);
PendingIntent pendingIntent3 = PendingIntent.getBroadcast(getBaseContext(), 0, alarmIntent3, PendingIntent.FLAG_UPDATE_CURRENT);

// Current time
Calendar calendarNotifiedTime = Calendar.getInstance();
calendarNotifiedTime.setTimeInMillis(System.currentTimeMillis());
calendarNotifiedTime.set(Calendar.SECOND, 0);

// Set alarm
AlarmManager manager =(AlarmManager) getSystemService(Context.ALARM_SERVICE);
manager.setRepeating(AlarmManager.RTC_WAKEUP, calendarNotifiedTime.getTimeInMillis(), 1*60*1000, pendingIntent3);

Make sure you have declared myReceiver BroadcastReceiver in your AndroidManifest.xml.