Notification at Specific Time using BroadcastReceiver and AlarmManager

Question

I want to send notification at specific time using broadcast receiver. many tutorials videos and also answers has been read in this regard and all of them was clear. but I c

Answer 1

If you wish to have a timer expire at an exact time, then you can configure the timer as follows.

Calendar alarmFor = Calendar.getInstance();
alarmFor.set(Calendar.HOUR_OF_DAY, 7);
alarmFor.set(Calendar.MINUTE, 45);
alarmFor.set(Calendar.SECOND, 0);

Intent MyIntent = new Intent(getApplicationContext(), BroadcastNotification.class);
PendingIntent MyPendIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, MyIntent, PendingIntent.FLAG_CANCEL_CURRENT);

AlarmManager MyAlarm = (AlarmManager) getSystemService(ALARM_SERVICE);
MyAlarm.setAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, alarmFor.getTimeInMillis(), MyPendIntent);

In this example, onReceive() is as follows:

@Override
public void onReceive(Context context, Intent intent) {
    Log.d("MyAPP", "onReceive() called");
}

When I run this, the following is logged at the the exact time requested:

11-22 07:45:00.730 5833-5833/com.sap.myapplication D/MyAPP: onReceive() called