Android通知问题

Question

我正在尝试实现的是通知，即使用通知管理器的警报。我要求用户选择日期和时间，并设置alert.Set警报有一些值，如无，准时，前5分钟，前15分钟，前30分钟，因此on..Its工作良好，除了NONE..If用户选择无然后通知不应该go.But，而是它直接away.The代码，我已经做了下面。请为列表中的第一个选项it.Since提供建议，如果用户选择none.So，我不会做任何事情。

if(alert.equalsIgnoreCase("On Time"))
{
    Calendar cal=Calendar.getInstance();
    cal.set(Calendar.DAY_OF_MONTH,reminderday);
    cal.set(Calendar.MONTH,remindermonth);
    cal.set(Calendar.YEAR,reminderyear);
    cal.set(Calendar.HOUR_OF_DAY,hour);
    cal.set(Calendar.MINUTE,minute);
    starttime=cal.getTimeInMillis();
}
else if(alert.equalsIgnoreCase("5 Minutes Before"))
{
    Log.i("inside","5 mins before");
    Calendar cal=Calendar.getInstance();
    cal.set(Calendar.DAY_OF_MONTH,reminderday);
    cal.set(Calendar.MONTH,remindermonth);
    cal.set(Calendar.YEAR,reminderyear);
    cal.set(Calendar.HOUR_OF_DAY,hour);
    cal.set(Calendar.MINUTE,minute-5);
    starttime=cal.getTimeInMillis();
}

else if(alert.equalsIgnoreCase("15 Minutes Before"))
{
    Log.i("inside","15 mins before");
    Calendar cal=Calendar.getInstance();
    cal.set(Calendar.DAY_OF_MONTH,reminderday);
    cal.set(Calendar.MONTH,remindermonth);
    cal.set(Calendar.YEAR,reminderyear);
    cal.set(Calendar.HOUR_OF_DAY,hour);
    cal.set(Calendar.MINUTE,minute-15);
    starttime=cal.getTimeInMillis();
}
else if(alert.equalsIgnoreCase("30 Minutes Before"))
{
    Log.i("inside","30 mins before");
    Calendar cal=Calendar.getInstance();
    cal.set(Calendar.DAY_OF_MONTH,reminderday);
    cal.set(Calendar.MONTH,remindermonth);
    cal.set(Calendar.YEAR,reminderyear);
    cal.set(Calendar.HOUR_OF_DAY,hour);
    cal.set(Calendar.MINUTE,minute-30);
    starttime=cal.getTimeInMillis();
}
else if(alert.equalsIgnoreCase("1 Hour Before"))
{
    Log.i("inside","1 hr before");
    Calendar cal=Calendar.getInstance();
    cal.set(Calendar.DAY_OF_MONTH,reminderday);
    cal.set(Calendar.MONTH,remindermonth);
    cal.set(Calendar.YEAR,reminderyear);
    cal.set(Calendar.HOUR_OF_DAY,hour-1);
    cal.set(Calendar.MINUTE,minute);
    starttime=cal.getTimeInMillis();
}
else if(alert.equalsIgnoreCase("2 Hour Before"))
{
    Log.i("inside","2 hr before");
    Calendar cal=Calendar.getInstance();
    cal.set(Calendar.DAY_OF_MONTH,reminderday);
    cal.set(Calendar.MONTH,remindermonth);
    cal.set(Calendar.YEAR,reminderyear);
    cal.set(Calendar.HOUR_OF_DAY,hour-2);
    cal.set(Calendar.MINUTE,minute);
    starttime=cal.getTimeInMillis();
}
else if(alert.equalsIgnoreCase("1 Day Before"))
{
    Log.i("inside","1 day before");
    Calendar cal=Calendar.getInstance();
    cal.set(Calendar.DAY_OF_MONTH,reminderday-1);
    cal.set(Calendar.MONTH,remindermonth);
    cal.set(Calendar.YEAR,reminderyear);
    cal.set(Calendar.HOUR_OF_DAY,hour);
    cal.set(Calendar.MINUTE,minute);
    starttime=cal.getTimeInMillis();
}
else if(alert.equalsIgnoreCase("2 Day Before"))
{
    Log.i("inside","2 day before");
    Calendar cal=Calendar.getInstance();
    cal.set(Calendar.DAY_OF_MONTH,reminderday-2);
    cal.set(Calendar.MONTH,remindermonth);
    cal.set(Calendar.YEAR,reminderyear);
    cal.set(Calendar.HOUR_OF_DAY,hour);
    cal.set(Calendar.MINUTE,minute);
    starttime=cal.getTimeInMillis();
}
else if(alert.equalsIgnoreCase("1 Week Before"))
{
    Log.i("inside","1 week before");
    Calendar cal=Calendar.getInstance();
    cal.set(Calendar.DAY_OF_MONTH,reminderday-7);
    cal.set(Calendar.MONTH,remindermonth);
    cal.set(Calendar.YEAR,reminderyear);
    cal.set(Calendar.HOUR_OF_DAY,hour);
    cal.set(Calendar.MINUTE,minute);
    starttime=cal.getTimeInMillis();
}
else
        {
            starttime=-1;   
        }
PendingIntent pendingIntent = PendingIntent.getBroadcast(this,0,intent, PendingIntent.FLAG_UPDATE_CURRENT);
            am.set(AlarmManager.RTC_WAKEUP,starttime, pendingIntent);

我得到的问题是，因为starttime值将是0，如果它表示无。那么我应该为starttime设置什么值，这样它就不会发生。

Answer 1

if (starttime > 0){    
    PendingIntent pendingIntent = PendingIntent.getBroadcast(this,0,intent, PendingIntent.FLAG_UPDATE_CURRENT);
                am.set(AlarmManager.RTC_WAKEUP,starttime, pendingIntent);    
}

改用上面的代码。