重置收件箱样式通知的邮件编号

Question

编辑：它不会允许我接受我自己的答案2天，但我想通了。如果你有类似的问题，请看我下面的回答

我正在努力堆叠应用程序中的推送通知，并使用InboxStyle将其与摘要文本一起显示。目前，我最多显示3个通知，如果需要，后面会显示一个“+x more”消息。要做到这一点，我要跟踪消息的数量；但是，我不确定当用户点击通知时如何重置消息数量。例如，如果用户收到3个通知，然后点击推送通知进入应用程序，我希望下一个通知显示为单个通知，但它当前显示的是“消息a消息b消息c+1更多。”当用户取消通知时，是否有某种类型的监听器可以用来将消息号重置为0？以下代码供参考：

 public class GCMPushReceiverService extends GcmListenerService {

private static final String TAG = "GCMPushReceiverService";
private int objectTypeCode; //DLS
private String contentText;
private String objectKeyGUID; //DLG
private String alert;
private String sound;
private boolean vibrate;
private String contentTitle;
private String collapse_key;
private String tickerText;
private static int message_number = 0;
private static ArrayList<String> messages = new ArrayList<String>();

private static final String MY_GROUP  = "my_group";

//with every new message
@Override
public void onMessageReceived(String from, Bundle data){
    this.objectTypeCode =  Integer.parseInt(data.getString("objectTypeCode"));
    this.contentText = data.getString("contentText");
    this.objectKeyGUID = data.getString("objectKeyGUID");
    this.alert = data.getString("alert");
    this.sound = data.getString("sound");
    this.vibrate = Boolean.parseBoolean(data.getString("vibrate"));
    this.contentTitle = data.getString("contentTitle");
    this.collapse_key = data.getString("collapse_key");
    this.tickerText = data.getString("ticker_Text");

    messages.add(message_number, contentTitle +": " + contentText);
    message_number++;

    Log.d(TAG, "From: " + from);
    sendNotification();
}

private void sendNotification() {
    Intent intent;


   if (objectKeyGUID != null && !objectKeyGUID.equals("")) intent = deepLink();
   else  intent = new Intent(this, LogInPage.class);

    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

    int requestCode = 0;
    PendingIntent pendingIntent =
            PendingIntent.getActivity(this, requestCode, intent, PendingIntent.FLAG_ONE_SHOT);




    Uri sound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.Builder noBuilder = new NotificationCompat.Builder(this);
    noBuilder.setSmallIcon(R.drawable.icon);
    noBuilder.setContentText(contentText);
    noBuilder.setTicker(tickerText);
    noBuilder.setContentIntent(pendingIntent);
    noBuilder.setSound(sound);
    noBuilder.setGroup(MY_GROUP);
    noBuilder.setAutoCancel(true);

    Bitmap largeIcon = BitmapFactory.decodeResource(getResources(),
            R.drawable.icon);
    noBuilder.setLargeIcon(largeIcon);



    //if we have more than one message, we want to display them in one notification, inbox style
    //if it's more than 3, display the first three and have a "+ x more" message
    //TODO: reset the message_number when we click the notification 
    if (message_number > 1) {
        noBuilder.setContentTitle(message_number + " messages");

        NotificationCompat.InboxStyle inboxStyle = new NotificationCompat.InboxStyle();
        for (int i = 0; i < message_number && i < 3; i++)
            inboxStyle.addLine(messages.get(i));
        if (message_number > 3)
            inboxStyle.setSummaryText("+ " + (message_number - 3) + " more");
        inboxStyle.setBigContentTitle(message_number + " Notifications");
        //noBuilder.setContentTitle(message_number + " Notifications");
        noBuilder.setStyle(inboxStyle);
    }

    else {
        noBuilder.setContentTitle(contentTitle);
    }

    NotificationManager notificationManager =
            (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.notify(0, noBuilder.build()); //0 = ID of notification
}

Answer 1

最后，我使用了一个Singleton类来解决这个问题--我在Singleton类中存储了消息的ArrayList以及message_number值。我在onMessageRecieved中调用了getMessageNumber和getMessages，然后在sendNotification方法的末尾再次设置新值。然后，在主活动的onResume侦听器中将message_number的值分别重置为0和ArrayList的值为null，这样，每当打开应用程序时，通知就会被刷新。我发现了如何跟踪通知以知道何时显示摘要通知是有帮助的--希望这篇文章和那篇文章能帮助其他遇到类似问题的人