如何在后台每天触发通知

Question

我努力让通知在我的应用中发挥作用。我能够设置一个按钮onclicklistener来触发通知，但现在我想在下午3点设置自动通知。问题是我应该在哪里放置通知代码和告警管理员代码？因为我不再使用按钮触发器了。另外，是否有一种简单的方法可以让它在后台运行，就像服务一样，即使应用程序未打开，它也会在特定时间每天通过触发通知自动提醒用户？感谢

通知

    Intent intent = new Intent(this, GFXSurface.class);
    PendingIntent pi2 = PendingIntent.getActivity(this, 0, intent, 0);
    String body = "This is a message from the Health Effect";
    String title = "The Health Effect";
    Notification n = new Notification(R.drawable.notification, body,
            System.currentTimeMillis());
    n.setLatestEventInfo(this, title, body, pi2);
    n.defaults = Notification.DEFAULT_ALL;
    nm.notify(uniqueID, n);
    finish();

闹铃跳虎

    calendar.set(Calendar.HOUR_OF_DAY, 15);
    calendar.set(Calendar.MINUTE,0);
    calendar.set(Calendar.SECOND, 0);
    AlarmManager am = (AlarmManager) this
            .getSystemService(this.ALARM_SERVICE);
    PendingIntent pi = PendingIntent.getService(this, 0, new Intent(this,
            StatusBar.class), PendingIntent.FLAG_UPDATE_CURRENT);
    am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
            AlarmManager.INTERVAL_DAY, pi);