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我正在尝试在通知上添加计时器.计时器是一项服务.每一行调用此行(继续Thread是一个"running"布尔值,timeString是精心设计的String,显示时间):

NotificationChrono.updateNotification(getApplicationContext(), continueThread, 
NOTIF_ID, timeString, "Chronometer", notificationManager);

这是NotificationChrono类:

public class NotificationChrono {

    static public void updateNotification(Context context, boolean running,
        int id, String title, String text,
        NotificationManager notificationManager) {

        Intent stopIntent = new Intent("com.corsalini.david.barcalc.STOP");
        PendingIntent stopPendingIntent = PendingIntent.getBroadcast(context,
            0, stopIntent, 0);

    Intent startIntent = new Intent(
            "com.corsalini.david.barcalc.STARTPAUSE");
    PendingIntent startPendingIntent = PendingIntent.getBroadcast(context,
            0, startIntent, 0);

    NotificationCompat.Builder builder = new NotificationCompat.Builder(
            context)

            .setContentText(context.getString(R.string.notif_text))

            .setContentTitle(title)

            .setSmallIcon(R.drawable.ic_action_alarm_2)

            .setAutoCancel(false)

            .setOngoing(running)

            .setOnlyAlertOnce(true)

            .setContentIntent(
                    PendingIntent.getActivity(context, 10, new Intent(
                            context, FrontActivity.class)
                            .addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP), 0))
            .addAction(
                    running ? R.drawable.ic_action_pause
                            : …

我有一个通知,每隔三秒刷新一次(即发送).我已经设置了FLAG_ONGOING_EVENT标志和FLAG_NO_CLEAR标志,以便始终显示.问题是,如果例如下载处于活动状态(在通知区域中显示进度条),则两个通知都会不断切换位置,因为它们每隔几秒刷新一次.

如何将我的通知固定到列表顶部(或某个静态位置),以便每次通过调用更新它时它都会停止跳转NotificationManager.notify()？

编辑:这是更新通知的代码.它每三秒钟运行一次.

Notification notification = new Notification();
notification.contentView = appBarNotification; // this sets the changed notification content
notification.flags |= Notification.FLAG_ONGOING_EVENT;  
notification.flags |= Notification.FLAG_NO_CLEAR; 

Intent notificationIntent = new Intent();
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
notification.contentIntent = contentIntent;
notification.icon = R.drawable.icon;

nm.notify(APP_BAR_NOTIFICATION, notification);