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我想在一天内显示随机通知，所以我设置了一个警报，通过我的共享首选项将触发时间作为一个值，默认值为 10。代码如下：

    Calendar calendar;

    SharedPreferences prefs = PreferenceManager
            .getDefaultSharedPreferences(getBaseContext());
    int nextAlarm = prefs.getInt("nextAlarm", 10);

    Intent i = new Intent(this, NotificationBarAlarm.class);
    i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

    PendingIntent pi = PendingIntent.getBroadcast(this, 0, i,
            PendingIntent.FLAG_UPDATE_CURRENT);


    calendar = Calendar.getInstance();
    calendar.set(Calendar.HOUR_OF_DAY, nextAlarm);
    calendar.set(Calendar.MINUTE, 00);
    calendar.set(Calendar.SECOND, 00);

    long alarmmills = calendar.getTimeInMillis();

    AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
    am.set(AlarmManager.RTC_WAKEUP, alarmmills, pi);

警报正在发送未决意图以激活我的通知过程。每当调用通知时，我都会计算当前时间毫秒加上随机的毫秒数，然后将它们转换为小时并将时间存储在我的共享首选项中，以便将其用于我的下一个警报。最后，我向我的警报服务发送了一个意图，以便对其进行更新。代码如下：

NotificationManager notifyManager;

@Override
public void onReceive(Context context, Intent intent) {


    Time time = new Time();
    long currenttimeMilliseconds = System.currentTimeMillis();
    time.set(currenttimeMilliseconds);
    int t = time.hour;

    //Random time 

     Random rand=new Random();
    int min = 1, max = 2;
    int randomNum = rand.nextInt(max - min + 1) + min;
    long randomMilli=randomNum *60*60*1000;

      long updatedTime= currenttimeMilliseconds + 10800000 +randomMilli;

        Time nextalarmmill = new Time();
        nextalarmmill.set(updatedTime);
        int nextalarm = nextalarmmill.hour;

    SharedPreferences prefs =  PreferenceManager.getDefaultSharedPreferences(context);
    SharedPreferences.Editor editor = prefs.edit();
    editor.putInt("nextAlarm", nextalarm);
    editor.commit();


    if (t >= 10 && t <= 22) {           

        notifyManager = (NotificationManager) context
                .getSystemService(Context.NOTIFICATION_SERVICE);
        Intent notificationIntent = new Intent(context,
                AlarmReceiverActivity.class);
        PendingIntent contentIntent = PendingIntent.getActivity(context, 0,
                notificationIntent, 0);
        Notification notif = new Notification(R.drawable.ic_launcher,
                "A new notification just popped in!",
                System.currentTimeMillis());
        Uri alarmSound = RingtoneManager
                .getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        notif.sound = alarmSound;
        notif.setLatestEventInfo(context, "Notification",
                "A new notification", contentIntent);
        notifyManager.notify(1, notif);

    }

     Intent serviceIntent = new Intent(context, AlarmService.class);
     context.startService(serviceIntent);


}

它工作正常，直到天变。例如，在 27/07 下午 21:00 我打电话通知下一个警报设置为激活（在 4 或 5 小时后随机）让我们说在上午 01:00。警报不明白 01:00 不是指今天 (27/07) 而是指下一天 (28/7)。结果，它立即触发了我的通知接收器，这又再次激活了我的警报服务，从而创建了一个循环。

我如何设置闹钟以便了解这一天的变化？

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1 回答 1

0

尝试添加：

if (nextAlarm < calendar.HOUR_OF_DAY)
    calendar.add(Calendar.DATE, 1);

后 

calendar = Calendar.getInstance();
于 2013-07-29T10:22:19.913 回答