Android:管理多个通知

我正在尝试在应用程序中创建多个通知。为了唯一地标识每个通知,我为它们提供了唯一的标识ID。以下是我的代码:

private void updateNotification(int notificationId, int clockStatusID, CharSequence text) {
 //notificationManager.cancel(notificationId);
// throws up an ongoing notification that the timer is running
Log.i("TIMERCOUNT", "Notification id: " + notificationId);
Notification not = new Notification(clockStatusID, // the
    // icon
    // for
    // the
    // status
    // bar
    text, // the text to display in the ticker
    System.currentTimeMillis() // the timestamp for the
    // notification to appear
);
Intent intent = new Intent();
intent.putExtra("notificationID", notificationId);
intent.setAction("actionstring" + System.currentTimeMillis());
intent.setClassName("com.chander.time.android.activities",
"com.chander.time.android.activities.Tabs");


not.setLatestEventInfo(self,
    getText(R.string.timer_notification_title),
    getText(R.string.timer_on_notification_text), PendingIntent
    .getActivity(this, 0, intent,
        PendingIntent.FLAG_UPDATE_CURRENT));

not.flags += Notification.FLAG_ONGOING_EVENT;
not.flags += Notification.FLAG_NO_CLEAR;
notificationManager.notify(notificationId, not);
}

问题: 选择通知后,将调用选项卡活动传递意图。我要访问在选项卡中选择的通知的唯一通知ID。我尝试了intent.putextra()来保存intent中的notificationID。但是,对于多个通知,它会覆盖notificationID并返回最新的通知。我不明白为什么会发生这种情况,我如何才能避免这种覆盖性的通知ID。

谢谢, 钱德尔