java - Alarm Manager and system time -


i want time time picker comparing system time. if both times compared , equal want show toast "time reached". have tried code. not working. calling toast before time reached. plus not working when app closed. suggestions or approach?

    if(code.contentequals("1")) {         toast.maketext(getapplication(), "before hour: " +    calendar.get(calendar.hour_of_day), toast.length_long ).show();        toast.maketext(getapplication(), "befor min: " + calendar.get(calendar.minute), toast.length_long ).show();        toast.maketext(getapplicationcontext(), "am pm "+ calendar.get(calendar.am_pm), toast.length_short).show();         done.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view v) {                  if (build.version.sdk_int >= build.version_codes.m) {                     hour = timepicker.gethour();                     toast.maketext(getapplicationcontext(), "if hour:" + hour, toast.length_short).show();                 } else {                     hour = timepicker.getcurrenthour();                     toast.maketext(getapplicationcontext(), "else hour:" + hour, toast.length_short).show();                 }                 if (build.version.sdk_int >= build.version_codes.m) {                     min = timepicker.getminute();                 } else                     min = timepicker.getcurrentminute();                  if (hour < calendar.get(calendar.hour_of_day)) /// selected hour < current hour put am_pm = else am_pm=pm                 {                     am_pm = 0;                     am_pm = "am";                  } else {                     am_pm = 1;                     am_pm = "pm";                 }                 toast.maketext(getapplicationcontext(), "hour:" + hour, toast.length_short).show();                 calendar mycalendar = calendar.getinstance();                 /// toast.maketext(getapplicationcontext(), "hour:"calendar.set(calendar.hour_of_day, hour), toast.length_short).show()                   /// mycalendar.set(calendar.hour_of_day, hour);                 mycalendar.set(calendar.minute, min);                 mycalendar.set(calendar.second, 00);                 mycalendar.set(calendar.am_pm, am_pm);                 mycalendar.set(calendar.hour_of_day, hour);                      toast.maketext(getapplication(), "selected hour: " + mycalendar.get(calendar.hour_of_day), toast.length_long).show();                     toast.maketext(getapplication(), "selected min: " + mycalendar.get(calendar.minute), toast.length_long).show();                     toast.maketext(getapplication(), "selected pm " + mycalendar.get(calendar.am_pm), toast.length_long).show();                     intent intent = new intent(getapplicationcontext(), timereciver.class);                     pendingintent pendingintent = pendingintent.getbroadcast(getapplicationcontext(), 234324243, intent, pendingintent.flag_update_current);                     alarmmanager alarmmanager = (alarmmanager) getapplicationcontext().getsystemservice(activity.alarm_service);                     alarmmanager.set(alarmmanager.rtc_wakeup,                             calendar.gettimeinmillis(),                              pendingintent);                       if (hour > 12)                         time1 = hour - 12 + ":" + min + " " + am_pm;                     else                         time1 = hour + ":" + min + " " + am_pm;                      sharedpreferences.editor time1 = sharedpreferences.edit();                     time1.putstring("time1", time1);                     time1.apply();                     time1.commit();                     toast.maketext(getapplication(), "you selected: " + time1, toast.length_long).show();                   }          });          }


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