如何在告警管理器中清除以前的告警？

Question

我正在开发一个警报应用程序，因为我正在使用警报管理器的概念，用户可以选择否。我写了一些代码，它的工作问题是，当用户更改警报的剩余天数(例如3天而不是5天)之前设置(5天)警报不清楚总共8个警报来(5+3)请任何人解决我的问题。

dbcal.set(currentcal.get(Calendar.YEAR), mnth,dt);
Log.e("dbCal Alarm","first"+dbcal.getTime());
if(!dbcal.getTime().before(currentcal.getTime())){
    uniqueno++;
    alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
    Intent intent = new Intent(SampledateActivity.this,AlarmReceiver.class);
    PendingIntent pi = PendingIntent.getBroadcast(SampledateActivity.this, uniqueno, intent, 0);
    alarmManager.set(AlarmManager.RTC_WAKEUP, dbcal.getTimeInMillis(), pi);
}
for(int k = 1 ; k <= time ;k++){
   Log.e("Entered to alarm","yes");
   dbcal.add(Calendar.HOUR, -24);
   if(!dbcal.getTime().before(currentcal.getTime())){
        uniqueno++;
        Intent intentlocal = new Intent(SampledateActivity.this,AlarmReceiver.class);
        PendingIntent pilocal = PendingIntent.getBroadcast(SampledateActivity.this, uniqueno, intentlocal, 0);
        alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
        alarmManager.set(AlarmManager.RTC_WAKEUP, dbcal.getTimeInMillis(), pilocal);
        Log.e("dbCal Alarm","k: "+"k value:"+k+(time*i+k)+":"+dbcal.getTime());
  }
}

Answer 1

使用您用来创建PendingIntent以启动PendingInent的相同requestCode创建Alarm。

Intent intentlocal = new Intent(SampledateActivity.this,AlarmReceiver.class);
PendingIntent pilocal = PendingIntent.getBroadcast(SampledateActivity.this,
                                                       uniqueno, intentlocal, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.cancel(pilocal);
pilocal.cancel();

Answer 2

我找到了我的问题的解决方案。每次我刷新我的活动。即，当我点击中的set alarm按钮时，我已经刷新了我的活动。因此，在设置之前，将删除报警并创建新输入的报警。