Android alarmmanger gets called in different time?

Question

I am working on Android AlarmManager and i found one issue in my code. The Alarm manager gets called in different time as well , i don't find what's the reason , i gave alarm at 7:10 AM but it gets called whenever i open the app in different time like 3:10 PM , 4:30 PM etc.

MyCode :

public void setAlarm(){



     Calendar calendar = Calendar.getInstance();

      calendar.setTimeInMillis(System.currentTimeMillis());

      calendar.set(Calendar.HOUR_OF_DAY, 7);

      calendar.set(Calendar.MINUTE, 10);

      calendar.set(Calendar.AM_PM,Calendar.AM);



    Intent intent = new Intent(appContext, MyAlarmManager.class);

    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

    PendingIntent pendingIntent = PendingIntent.getBroadcast(appContext, 0, intent, 0);



    AlarmManager alarmManager = (AlarmManager) appContext.getSystemService(Context.ALARM_SERVICE);

    alarmManager.setInexactRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),  AlarmManager.INTERVAL_DAY, pendingIntent);

}

MyAlarmManager.java

public class MyAlarmManagerextends BroadcastReceiver {



@Override

public void onReceive(final Context context, Intent intent) {



    setAlarm();



 } }

So , this is the above code , please let me know what's wrong in the code and suggest me some solution.

Answer 1

This is happening because the alarm is set in the past (when you set it anytime after 07:10 AM) So, you have to add 1 day if it is past 07:10 AM today.

Explanation -

Suppose it is 8 AM today and you are setting an alarm for 07:10, it sets an alarm for the same day 07:10 AM which is already past, hence it goes off whenever you open the app

Solution -

Option 1 - Either set date, month and year too like -

calendar.set(Calendar.DATE, date);
calendar.set(Calendar.MONTH, month);

Option 2 - Check what is the current time, if current time > the alarm time, add one day to the alarm

//If you are past 07:10 AM then 
    calendar.add(Calendar.DATE,1);

Android alarmmanger gets called in different time?

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