FCM App在后台没有通知声音和图标不显示

Question

目前我发送通知为：

    {
        "data" : {
            "sound": "default",
            "icon": "ic_app_launcher",
            "..." : "..."
            .
            .
            .
         }
    }

E/fcmbundle：倾倒意图开始

E/fcmbundle：[google.sent_time=...]

E/fcmbundle：[来自=...]

E/fcmbundle：[icon=ic_app_launcher]

E/fcmbundle：[声音=默认]

E/fcmbundle：[google.message_id=0:...]

E/fcmbundle：[collapse_key=...]

E/fcmbundle：倾倒意图结束

这是当应用程序在后台运行时记录我从 FCM 获得的数据，点击通知时它将打开启动器 Activity。

我已经阅读了许多与同一问题相关的答案，但对我不起作用。我正在发送数据消息，并在其中收到了该消息。声音和图标也。但不工作。没有通知声音，图标显示为正方形。

I have also tried the single notification in json as:
{
    "to" : "...",
    "notification" : {
        "sound": "default",
        "icon" : "myicon"
    },
    "data" : {}
}

但这也不能正常工作。

通知在后台出现，但不发出声音，也不显示图标。

当应用程序处于前台时，通知会正常显示图标，并根据需要发出声音通知。

谁能帮我解决这个问题？

Answer 1

对于前台和后台的通知，请考虑仅使用data 有效负载。然后override onMessageReceived 方法在你的custom MessageService class 下面是一个适合我的解决方案。 notificationPayload = {"data": { "title": "your title" ,"body": "Your body"}}

public class CustomFirebaseMessagingService extends FirebaseMessagingService {
    final String CHANNEL_ID = "YOUR_CHANNEL_ID";//when targeting android-o

@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
    super.onMessageReceived(remoteMessage);
    if (remoteMessage.getData().size() > 0) {
        sendNotification(remoteMessage);
    }
}


private void sendNotification(RemoteMessage remoteMessage) {
    Map<String, String> data = remoteMessage.getData();

    String title = data.get("title");
    String message = data.get("body");

    Intent resultIntent = new Intent(this, YOUR_TARGET_ACTIVITY.class);

    resultIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
            | Intent.FLAG_ACTIVITY_CLEAR_TASK);

    PendingIntent resultPendingIntent = PendingIntent.getActivity(
            this,
            0,
            resultIntent,
            PendingIntent.FLAG_ONE_SHOT
    );


    Uri alarmSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this, CHANNEL_ID)
            .setSmallIcon(R.mipmap.ic_launcher_round)
            .setContentTitle(title)
            .setStyle(new NotificationCompat.BigTextStyle()
                    .bigText(message))
            .setPriority(NotificationCompat.PRIORITY_DEFAULT)
            .setDefaults(NotificationCompat.DEFAULT_ALL)
            .setAutoCancel(true);


    int notificationId = (int) System.currentTimeMillis();
    mBuilder.setSound(alarmSound);
    mBuilder.setContentIntent(resultPendingIntent);


    NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

    if (manager != null) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel = new NotificationChannel(CHANNEL_ID,
                    "Human Readable channel id",
                    NotificationManager.IMPORTANCE_DEFAULT);
            channel.setShowBadge(true);
            manager.createNotificationChannel(channel);

        }

        manager.notify(notificationId, mBuilder.build());
    }
}

}

Answer 2

试试这个：

@Override
    public void onMessageReceived(RemoteMessage remoteMessage) {

        if (remoteMessage != null && remoteMessage.getData().size() > 0) {

            try {
                JSONObject json = new JSONObject(remoteMessage.getData().toString());
                sendPushNotification(json);
            } catch (Exception e) {
                Log.e(TAG, "Exception: " + e.getMessage());
            }
        }
      }

sendPushNotification 方法

 private void sendPushNotification(JSONObject json) {
        try {
            //getting the json data
            JSONObject data = json.getJSONObject("data");

               //creating MyNotificationManager object
            MyNotificationManager mNotificationManager = new MyNotificationManager(getApplicationContext());

            //creating an intent for the notification

            mNotificationManager.showSmallNotification(title, message, intent);
            OR
            mNotificationManager.showBigNotification(title, message, imageUrl, intent);

        } catch (JSONException e) {
            Log.e(TAG, "Json Exception: " + e.getMessage());
        } catch (Exception e) {
            Log.e(TAG, "Exception: " + e.getMessage());
        }
}

MyNotificationManager 类：

public class MyNotificationManager {

    public int ID_BIG_NOTIFICATION = 234;
    public int ID_SMALL_NOTIFICATION = 235;

    private Context mCtx;

    public MyNotificationManager(Context mCtx) {
        this.mCtx = mCtx;
        ID_BIG_NOTIFICATION = getRandom();
        ID_SMALL_NOTIFICATION = getRandom();
    }

    private int getRandom() {
        Random random = new Random();

        return random.nextInt(99999) + 1;
    }

    //the method will show a big notification with an image
    //parameters are title for message title, message for message text, url of the big image and an intent that will open
    //when you will tap on the notification
    public void showBigNotification(String title, String message, String url, Intent intent) {
        PendingIntent resultPendingIntent =
                PendingIntent.getActivity(
                        mCtx,
                        ID_BIG_NOTIFICATION,
                        intent,
                        PendingIntent.FLAG_UPDATE_CURRENT
                );
        NotificationCompat.BigPictureStyle bigPictureStyle = new NotificationCompat.BigPictureStyle();
        bigPictureStyle.setBigContentTitle(title);
        bigPictureStyle.setSummaryText(Html.fromHtml(message).toString());
        bigPictureStyle.bigPicture(getBitmapFromURL(url));
        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(mCtx);
        Notification notification;
        notification = mBuilder.setSmallIcon(R.mipmap.ic_launcher).setTicker(title).setWhen(0)
                .setAutoCancel(true)
                .setContentIntent(resultPendingIntent)
                .setContentTitle(title)
                .setStyle(bigPictureStyle)
                .setDefaults(Notification.DEFAULT_VIBRATE|Notification.DEFAULT_SOUND|Notification.DEFAULT_LIGHTS)
                .setSmallIcon(R.drawable.ic_app_icon)
                .setLargeIcon(BitmapFactory.decodeResource(mCtx.getResources(), R.drawable.ic_app_icon))
                .setContentText(message)
                .build();

        notification.flags |= Notification.FLAG_AUTO_CANCEL;

        NotificationManager notificationManager = (NotificationManager) mCtx.getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.notify(ID_BIG_NOTIFICATION, notification);
    }

    //the method will show a small notification
    //parameters are title for message title, message for message text and an intent that will open
    //when you will tap on the notification
    public void showSmallNotification(String title, String message, Intent intent) {
        PendingIntent resultPendingIntent =
                PendingIntent.getActivity(
                        mCtx,
                        ID_SMALL_NOTIFICATION,
                        intent,
                        PendingIntent.FLAG_UPDATE_CURRENT
                );


        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(mCtx);
        Notification notification;
        notification = mBuilder.setSmallIcon(R.mipmap.ic_launcher).setTicker(title).setWhen(0)
                .setAutoCancel(true)
                .setContentIntent(resultPendingIntent)
                .setContentTitle(title)
                .setSmallIcon(R.drawable.ic_app_icon)
                .setLargeIcon(BitmapFactory.decodeResource(mCtx.getResources(), R.drawable.ic_app_icon))
                .setContentText(message)
                .build();

        notification.flags |= Notification.FLAG_AUTO_CANCEL;

        NotificationManager notificationManager = (NotificationManager) mCtx.getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.notify(ID_SMALL_NOTIFICATION, notification);
    }

    //The method will return Bitmap from an image URL
    private Bitmap getBitmapFromURL(String strURL) {
        try {
            URL url = new URL(strURL);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setDoInput(true);
            connection.connect();
            InputStream input = connection.getInputStream();
            Bitmap myBitmap = BitmapFactory.decodeStream(input);
            return myBitmap;
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }
}