Question

如何在 FirebaseMessagingService 中合并推送通知。我几乎尝试了一切，但似乎没有任何工作。对于每个新的Data对象，它都会发出新通知。我打印通知数量的日志打印为0.

是否有任何方法可以跟踪通知抽屉中是否有任何未读通知具有相同的notificationId，因此我可以将新的通知与它合并？

任何帮助将不胜感激。

public class MyFirebaseMessagingService extends FirebaseMessagingService {

    private static final String TAG = "MyFirebaseMsgService";
    private static final String actionLiked = "liked";
mNumber=0;
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {

           ArrayList<String>notificationString= new ArrayList<>();


        Log.d(TAG, "From: " + remoteMessage.getFrom());

        // Check if message contains a data payload.
        if (remoteMessage.getData().size() > 0) {
            Log.d(TAG, "Message data payload: " + remoteMessage.getData());
            Log.d(TAG, "Number of notifications" +mNumber);

            Map<String, String> dataFromCloud =  remoteMessage.getData();
            String action = dataFromCloud.get("action");
            switch (action) {
                case actionLiked:
                notificationString.add(action);
                    Intent intent = new Intent(this, MainActivity.class);
                    sendNotification(action, intent);
                    break;
                default:
                    break;
            }
        }
    }

    private void sendNotification(String messageTitle, Intent intent) {

        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent,
                PendingIntent.FLAG_ONE_SHOT);

                        String[] events = new String[6];


        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
                .setSmallIcon(R.mipmap.ic_launcher)
                .setAutoCancel(true)
                .setContentIntent(pendingIntent)
                .setNumber(++numMessages);

    NotificationCompat.InboxStyle inboxStyle = new NotificationCompat.InboxStyle();
      for (int i=0; i < notificationString.size(); i++) {
      inboxStyle.addLine(notificationString.get(i));
           }

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

        notificationManager.notify(0, notificationBuilder.build());
        }}

Answer 1

由于没有人发布这个问题的答案，我自己想出了答案。这可能不是合并通知的最优化方式，但它对我来说就像一个魅力。看看my blog post。

这是我的FirebaseMessagingService类：

public class MyFirebaseMessagingService extends FirebaseMessagingService {
    private static final String TAG = "MyFirebaseMsgService";
    private static final String actionLiked = "liked";
    private static final int NOTIFICATION_ID = 1593;
    private final String GROUP_KEY = "GROUP_KEY_RANDOM_NAME";
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        ArrayList<String> notificationString = new ArrayList<>();
        if (remoteMessage.getData().size() > 0) {
            Map<String, String> dataFromCloud = remoteMessage.getData();
            String action = dataFromCloud.get("action");
            String userName = dataFromCloud.get("userName");
            switch (action) {
                case actionLiked:
                    notificationString.add(action);
                    Intent intent = new Intent(this, LikeActivity.class);
                    String message = userName + " liked your photo.";
                    sendNotification(message, intent);
                    break;
                default:
                    break;
            }
        }
    }
    @TargetApi(Build.VERSION_CODES.M)
    private void sendNotification(String messageBody, Intent intent) {
        NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
        Intent onCancelNotificationReceiver = new Intent(this, CancelNotificationReceiver.class);
        PendingIntent onCancelNotificationReceiverPendingIntent = PendingIntent.getBroadcast(this.getApplicationContext(), 0,
                onCancelNotificationReceiver, 0);
        String notificationHeader = this.getResources().getString(R.string.app_name);
        NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        StatusBarNotification[] notifications = manager.getActiveNotifications();
        for (int i = 0; i < notifications.length; i++) {
            if (notifications[i].getPackageName().equals(getApplicationContext().getPackageName())) {
                Log.d("Notification", notifications[i].toString());
                Intent startNotificationActivity = new Intent(this, NotificationCenterActivity.class);
                startNotificationActivity.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, startNotificationActivity,
                        PendingIntent.FLAG_ONE_SHOT);
                Notification notification = new NotificationCompat.Builder(this)
                        .setSmallIcon(R.mipmap.ic_launcher)
                        .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher))
                        .setContentTitle(notificationHeader)
                        .setContentText("Tap to open")
                        .setAutoCancel(true)
                        .setStyle(getStyleForNotification(messageBody))
                        .setGroupSummary(true)
                        .setGroup(GROUP_KEY)
                        .setContentIntent(pendingIntent)
                        .setDeleteIntent(onCancelNotificationReceiverPendingIntent)
                        .build();
                SharedPreferences sharedPreferences = getSharedPreferences("NotificationData", 0);
                SharedPreferences.Editor editor = sharedPreferences.edit();
                editor.putString(String.valueOf(new Random(NOTIFICATION_ID)), messageBody);
                editor.apply();
                notificationManager.notify(NOTIFICATION_ID, notification);
                return;
            }
        }
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent,
                PendingIntent.FLAG_ONE_SHOT);
        Notification notificationBuilder = new NotificationCompat.Builder(this)
                .setSmallIcon(R.mipmap.ic_launcher)
                .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher))
                .setContentTitle(notificationHeader)
                .setContentText(messageBody)
                .setAutoCancel(true)
                .setGroup(GROUP_KEY)
                .setContentIntent(pendingIntent)
                .setDeleteIntent(onCancelNotificationReceiverPendingIntent)
                .build();
        SharedPreferences sharedPreferences = getSharedPreferences("NotificationData", 0);
        SharedPreferences.Editor editor = sharedPreferences.edit();
        editor.putString(String.valueOf(new Random(NOTIFICATION_ID)), messageBody);
        editor.apply();
        notificationManager.notify(NOTIFICATION_ID, notificationBuilder);
    }
    private NotificationCompat.InboxStyle getStyleForNotification(String messageBody) {
        NotificationCompat.InboxStyle inbox = new NotificationCompat.InboxStyle();
        SharedPreferences sharedPref = getSharedPreferences("NotificationData", 0);
        Map<String, String> notificationMessages = (Map<String, String>) sharedPref.getAll();
        Map<String, String> myNewHashMap = new HashMap<>();
        for (Map.Entry<String, String> entry : notificationMessages.entrySet()) {
            myNewHashMap.put(entry.getKey(), entry.getValue());
        }
        inbox.addLine(messageBody);
        for (Map.Entry<String, String> message : myNewHashMap.entrySet()) {
            inbox.addLine(message.getValue());
        }
        inbox.setBigContentTitle(this.getResources().getString(R.string.app_name))
                .setSummaryText("Tap to open");
        return inbox;
    }
}

当用户点击通知或删除通知时，清除共享首选项中保存的数据。为此，请创建一个广播接收器，它将清除您保存的所有数据。在onCreate中调用可以从通知中打开的活动。

广播接收器的代码如下

public class CancelNotificationReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
    SharedPreferences sharedPreferences = context.getSharedPreferences("NotificationData", 0);
    SharedPreferences.Editor editor = sharedPreferences.edit();
    editor.clear();
    editor.apply();
}}

请随时提出任何修改建议，以便我可以进一步优化。如果有更好的方法，请在下面写下来。希望这会对某人有所帮助。

如何在FirebaseMessagingService中合并whatsapp等推送通知

1 个答案: