如果我设置的触发时间是过去的时间，如何让AlarmManager不执行我的通知？

Question

在这本section的有关安排重复警报的Android开发文档中，“如果您指定的触发时间是过去的时间，则警报将立即触发”。因此，如果现在是上午9点，并且我将AlarmManager设置为在上午8点执行我的每日通知，则它不会等到明天上午8点执行通知，它会立即弹出。如何使其不弹出？

这是我的评论代码：

/**
* Show alertDialog to pick time
* @param v
*/
@Override
public void onClick(View v){
   Calendar c=Calendar.getInstance();
   mHour=c.get(Calendar.HOUR_OF_DAY);
   mMinute=c.get(Calendar.MINUTE);
   TimePickerDialog timePickerDialog=new TimePickerDialog(this,
        new TimePickerDialog.OnTimeSetListener() {
            @Override
            public void onTimeSet(TimePicker timePicker, int hour, int 
              minute) {
                timeSet.setText(hour+":"+minute);
                //storing the inputted hour and time, so they reappear when 
                //app reopens
                editor.putInt("Hour",hour);
                editor.putInt("Minute",minute);
                editor.apply();

                scheduleNotification(hour,minute);
            }
        },mHour,mMinute,true);
   timePickerDialog.show();
}

/**
*Building Intent for AlarmReceiver and PendingIntent.
* Give PendingIntent to AlarmManager
* @param hour user-inputted hour of day
* @param minute user-inputted minute of day
*/
public void scheduleNotification(int hour, int minute){
 Intent intent1=new Intent(this,AlarmReceiver.class);
 //FLAG_UPDATE_CURRENT: if the described PendingIntent already exists,
 //keep it but replace its extra data with what is in this new Intent.
 PendingIntent pendingIntent=PendingIntent.getBroadcast(this
        ,0
        ,intent1
        ,PendingIntent.FLAG_UPDATE_CURRENT);
 AlarmManager am=(AlarmManager)this.getSystemService(this.ALARM_SERVICE);
 Calendar calendar=Calendar.getInstance();

 calendar.set(Calendar.HOUR_OF_DAY,hour);
 calendar.set(Calendar.MINUTE,minute);
 //RTC_WAKEUP: wake up the device when it goes off.
 am.setRepeating(AlarmManager.RTC_WAKEUP
        , calendar.getTimeInMillis()
        ,AlarmManager.INTERVAL_DAY
        ,pendingIntent);
  }

AlarmReceiver.class用于在接收电话时发出通知，并接收未决的Intent并使用它来调用AlarmReceiver.class（以进行通知）。

Answer 1

您可以添加带有您的特定时间和当前时间的校验码：

    Calendar calendar = Calendar.getInstance();
    calendar.set(Calendar.HOUR_OF_DAY,hour);
    calendar.set(Calendar.MINUTE,minute);

    long _alarm = 0;
    Calendar now = Calendar.getInstance();
    if(calendar.getTimeInMillis() <= now.getTimeInMillis())
        _alarm = calendar.getTimeInMillis() + (AlarmManager.INTERVAL_DAY+1);
    else
        _alarm = calendar.getTimeInMillis();

    am.setRepeating(AlarmManager.RTC_WAKEUP
    , _alarm 
    ,AlarmManager.INTERVAL_DAY
    ,pendingIntent);