Question

Android的初学者，现在已经在这个问题上苦苦挣扎了一段时间。有一个正在进行的通知，我想经常更新。可能每一秒。我知道这应该是可能的，因为我看过其他应用程序就像Toggle一样。但无论何时更新并且页面上还有其他通知，他们都会继续互相争斗。我已经研究过，但没有找到任何能够帮助我的东西。

我相信我一直遵循这些规则，希望避免这个问题：

使用相同的通知对象，而不是每次更新的新通知对象
在每个notify（）
使用其他帖子推荐的.setwhen

Video to the problem

private NotificationManager mNotificationManagerupdate;
private NotificationCompat.Builder mBuilderupdate;

/**
 * Notification system that is used for this app. All we need to do is call this function
 * when we need to trigger a notification.
 */
private void notification() {
    times = System.currentTimeMillis();

    Uri soundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    Bitmap icon = BitmapFactory.decodeResource(context.getResources(),
            R.drawable.iss_2011);
    NotificationCompat.Builder mBuilder =
            new NotificationCompat.Builder(this)
                    .setAutoCancel(false)
                    .setOnlyAlertOnce(true)
                    .setOngoing(true)
                    .setContentTitle("ISS Tracker")
                    .setContentText("ISS is about an hour away!")
                    .setSmallIcon(R.drawable.iss_2011)
                    .setLargeIcon(icon)
                    .setSound(soundUri)
                    .setWhen(times);

    Intent resultIntent = new Intent(context, Locations.class);

    TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);

    stackBuilder.addParentStack(Locations.class);

    stackBuilder.addNextIntent(resultIntent);
    PendingIntent resultPendingIntent =
            stackBuilder.getPendingIntent(
                    0,
                    PendingIntent.FLAG_UPDATE_CURRENT
            );
    mBuilder.setContentIntent(resultPendingIntent);

    NotificationManager mNotificationManager =
            (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    mNotificationManager.notify(1234, mBuilder.build());
    mBuilderupdate = mBuilder;
    mNotificationManagerupdate = mNotificationManager;
}

/**
 * Continuously updates a notification that will display live results.
 *
 * @param time The difference between ISS' location to user's location
 */
private void updatemanager(final long time) {
    timerupdate = new Timer();
    timerupdate.scheduleAtFixedRate(new TimerTask() {
        @Override
        public void run() {
            notificationupdate(time);
        }
    }, 0, 1000);
}

/**
 * Updates the manager and finishes off when time reaches zero.
 *
 * @param time The difference between ISS' location to user's location
 */
private void notificationupdate(long time) {
    int finalseconds = (int) (time / 1000) - loop++;

    if (finalseconds > 0) {
        mBuilderupdate.setContentText("ISS is about " + finalseconds + " seconds away!");
    } else if (finalseconds > -11) {
        mBuilderupdate.setContentText("ISS is at your location! Ending in (" + (10 - Math.abs(finalseconds)) + ")");
    } else {
        timerupdate.cancel();
        timerupdate.purge();
        timerupdate = null;
        loop = 0;
        endnotification = true;
    }
    mBuilderupdate.setWhen(times);
    Log.d(TAG, "When = " + times);
    mNotificationManagerupdate.notify(1234, mBuilderupdate.build());
    if (endnotification) {
        String ns = Context.NOTIFICATION_SERVICE;
        NotificationManager nMgr = (NotificationManager) context.getSystemService(ns);
        nMgr.cancel(1234);
    }
}

为什么我的通知不断被推到顶端？

0 个答案: