Notifications That Open By Themselves

the notifications of my app open without a logical sense than the code that I wrote. I should receive a notification every day at the same time but if I open the app I get the same

Solution 1:

The service runs when you register it, so what you need to do is pass a boolean value with the intent when registering the service to prevent it from running when the application runs, but to run periodically thereafter.

In your activity add:

intent.putExtra("run", false);

Then in MyAlarmService:

privatebooleanrun=true;
// ...
action.getBooleanExtra("run", run);
if(run) {
    // notifications code
} else {
    run = true;
}

Solution 2:

Actually it works exactly as code is written. The cause of that behavior is your startAt parameter in setRepeating method.

 am.setRepeating(AlarmManager.RTC_WAKEUP,
                 calendar.getTimeInMillis(),
                 24*60*60*1000,
                 pendingIntent);

calendar.getTimeInMillis() time in milliseconds that the alarm should first go off, using the appropriate clock (depending on the alarm type).

For example :

//send first alarm after 1 second and repeat it every 24 hours
am.setRepeating(AlarmManager.RTC_WAKEUP,
                 1000,
                 24*60*60*1000,
                 pendingIntent);

//send first alarm after 10 second and repeat it every 24 hours
am.setRepeating(AlarmManager.RTC_WAKEUP,
                 10000,
                 24*60*60*1000,
                 pendingIntent);

UPDATE :

You need to save your last update time :

publicclassMyAlarmServiceextendsBroadcastReceiver {

 NotificationManager nm;

 @OverridepublicvoidonReceive(Context context, Intent intent) {
  //send alarm here//...SharedPreferencesmPref= context.getSharedPreferences("pref_name", Context.MODE_PRIVATE);
    SharedPreferences.EditormEditor= mPref.edit();
    mEditor.putLong("UPDATE_TIME", time);
    mEditor.commit();
 }
}

Then you can make your setRepeatingAlarm method like this :

publicvoidsetRepeatingAlarm() {
         Intentintent=newIntent(this, MyAlarmService.class);
         PendingIntentpendingIntent= PendingIntent.getBroadcast(this, 0,
         intent, PendingIntent.FLAG_CANCEL_CURRENT);

         long startAt;
         long period;

         SharedPreferencesmPref= context.getSharedPreferences("pref_name", Context.MODE_PRIVATE);

         longdif= System.currentTimeMillis() - mPref.getLong("UPDATE_TIME", 0);

         if (dif >= UPDATE_PERIOD) {
           startAt = 0;
           period = UPDATE_PERIOD;
         } else {
           startAt = dif;
           period = dif;
         }

         am.setRepeating(
               AlarmManager.RTC_WAKEUP,
               startAt,
               period,
               pendingIntent);
}