android - Pending Intent causes delay -


trying set multiple alarms using pending intent, alarms not broadcast in correct time. might causing ? 

public void clicker (view view) {     calendar calendar = calendar.getinstance();     int hour = calendar.get(calendar.hour_of_day);     int minute = calendar.get(calendar.minute);     timepickerdialog mtimepicker;     mtimepicker = new timepickerdialog(addalarm.this,             new timepickerdialog.ontimesetlistener() {                 @override                 public void ontimeset(timepicker timepicker,                                       int selectedhour, int selectedminute) {                     calendar calendar = calendar.getinstance();                     calendar.set(calendar.hour_of_day, selectedhour);                     calendar.set(calendar.minute, selectedminute);                      int c_hour,c_min;                     string format;                     c_hour=selectedhour;                     c_min=selectedminute;                      if (c_hour == 0) {                         c_hour += 12;                         format = "am";                     } else if (c_hour == 12) {                         format = "pm";                     } else if (c_hour > 12) {                         c_hour -= 12;                         format = "pm";                     } else {                         format = "am";                     }                      string formattime = string.format("%02d : %02d %s", c_hour, c_min, format);                      textview dimple = (textview)findviewbyid(r.id.timetext);                     dimple.settext(formattime);                     setalarm(calendar);                  }             }, hour, minute, false);// yes 24 hour time     mtimepicker.settitle("select time");     mtimepicker.show();  }  private void setalarm(calendar targetcal) {       intent alarmintent = new intent(addalarm.this, alarmreceiver.class);     pendingintent sender = pendingintent.getbroadcast(addalarm.this, pen, alarmintent, pendingintent.flag_one_shot);     alarmmanager alarmmanager = (alarmmanager)getsystemservice(alarm_service);     alarmmanager.set(alarmmanager.rtc_wakeup, targetcal.gettimeinmillis(), sender);   }

this how set alarm, pending intents uniquely set system time in ms, there no warning or error in logcat, alarms work fine, problem not in time, expected 1 or 2 mins of delay? suggestions ?

after using calendar.getinstance(); in ontimeset use calendar.settimeinmillis(system.currenttimemillis());

maybe help. make sure use different requestcodes pending intents in case of multiple alarms


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