Question

我正在根据某些条件尝试Notify用户。 Multiple Notifications中显示Status Bar，但我想Group the notification in single notification，当用户点击Status Bar时，我想要检索该群组中的所有通知。那可能吗？或者我必须保留PendingIntents这些通知？任何帮助将不胜感激。例如，如果两个朋友的生日在同一天出现，则应显示2个通知。我想组合这些通知，即在状态栏中不是2个通知，我想要一个，当用户点击它时，它应该有关于2个通知的信息。有可能吗？

请参阅以下代码以显示通知。

public void displayNotification(BirthdayDetail detail)
    {
        NotificationCompat.Builder builder = new NotificationCompat.Builder(this.context);
        builder.setSmallIcon(R.drawable.ic_launcher);
        builder.setContentTitle(detail.getContactName());
        builder.setContentText(detail.getContactBirthDate());

        Intent resultIntent =  new Intent(this.context, NotificationView.class);
        resultIntent.putExtra("name", detail.getContactName());
        resultIntent.putExtra("birthdate", detail.getContactBDate());
        resultIntent.putExtra("picture_path", detail.getPicturePath());
        resultIntent.putExtra("isContact", detail.isFromContact());
        resultIntent.putExtra("notificationId", notificationId);

        if(detail.isFromContact())
        {
            resultIntent.putExtra("phone_number", detail.getPhoneNumber());
        }

        PendingIntent resultPendingIntent = PendingIntent.getActivity(this.context, requestCode++,
                resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);
        builder.setContentIntent(resultPendingIntent);

        notificationManager 
                    = (NotificationManager) this.context.getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.notify(notificationId, builder.build());
        notificationId++;
    }

Answer 1

当您需要为同一类型多次发出通知时对于事件，您应该避免发出全新的通知。相反，您应该考虑更新以前的通知通过改变它的一些值或添加它，或两者兼而有之。

您可以使用以下内容：

mNotificationManager =
        (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// Sets an ID for the notification, so it can be updated
int notifyID = 1;
mNotifyBuilder = new NotificationCompat.Builder(this)
    .setContentTitle("New Message")
    .setContentText("You've received new messages.")
    .setSmallIcon(R.drawable.ic_notify_status)
numMessages = 0;
// Start of a loop that processes data and then notifies the user
...
    mNotifyBuilder.setContentText(currentText)
        .setNumber(++numMessages);
    // Because the ID remains unchanged, the existing notification is
    // updated.
    mNotificationManager.notify(
            notifyID,
            mNotifyBuilder.build());

来源：http://developer.android.com/training/notify-user/managing.html

Android：多个通知作为状态栏中的单个列表

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