java - 如果应用程序在前台，通知不会显示在通知抽屉中

Question

我正在使用 Firebase 云消息向我的应用程序发送通知，它工作正常。但是，当我发送通知并且我的应用程序在前台时，通知将不会显示在通知托盘中。如果我的应用程序在后台，通知只会显示在通知托盘中。

下面是我的代码：

public class Notifications extends FirebaseMessagingService {

    @ServerTimestamp
    Date time;
    private FirebaseFirestore mFirestore;
    private boolean isNotificationMatching = false;

    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {

        super.onMessageReceived(remoteMessage);

        mFirestore = FirebaseFirestore.getInstance();

        if (remoteMessage.getData() != null) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
                sendNotificationAPI26(remoteMessage);

            else
                sendNotification(remoteMessage);
        }
    }

    private void sendNotification(RemoteMessage remoteMessage) {

        isNotificationMatching = false;
        Intent intent = new Intent(this, Dashboard.class);
        intent.putExtra("notificationFragment", "showNotifications");
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

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


        final Map<String, String> data = remoteMessage.getData();

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

        mFirestore.collection("notifications").get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
            public void onComplete(@NonNull Task<QuerySnapshot> task) {
                if (task.isSuccessful()) {
                    for (QueryDocumentSnapshot document : task.getResult()) {
                        if (document.getData().get("id").equals(id)) {
                            isNotificationMatching = true;
                            break;
                        }
                    }

                    if (!isNotificationMatching) {
                        postDataToFirebaseServer(data);
                    }

                } else {
                    Log.d(TAG, "Error getting documents: ", task.getException());
                }
            }
        });


        Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
                .setSmallIcon(R.drawable.app_logo)
                .setContentText(description)
                .setAutoCancel(true)
                .setSound(defaultSoundUri);
        builder.setContentIntent(pendingIntent);

        NotificationManager noti = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        noti.notify(new Random().nextInt(), builder.build());
    }

    private void postDataToFirebaseServer(Map<String, String> data) {

        Map<String, Object> postDataMap = new HashMap<>();
        postDataMap.put("title", data.get("title"));

        postDataMap.put("timestamp", FieldValue.serverTimestamp());


        mFirestore.collection("notifications").add(postDataMap).addOnSuccessListener(new OnSuccessListener<DocumentReference>() {
            @Override
            public void onSuccess(DocumentReference documentReference) {
//                Toast.makeText(getA.this, "Success", Toast.LENGTH_SHORT);
            }
        }).addOnFailureListener(new OnFailureListener() {
            @Override
            public void onFailure(@NonNull Exception e) {
                String error = e.getMessage();
//                Toast.makeText(Testing.this, "Failed", Toast.LENGTH_SHORT);
            }
        });

    }

    private void sendNotificationAPI26(RemoteMessage remoteMessage) {
        Intent intent = new Intent(this, Dashboard.class);
        intent.putExtra("notificationFragment", "showNotifications");
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

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

        final Map<String, String> data = remoteMessage.getData();

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

        mFirestore.collection("notifications").get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
            public void onComplete(@NonNull Task<QuerySnapshot> task) {
                if (task.isSuccessful()) {
                    for (QueryDocumentSnapshot document : task.getResult()) {
                        if (document.getData().get("id").equals(id)) {
                            isNotificationMatching = true;
                            break;
                        }
                    }

                    if (!isNotificationMatching) {
                        postDataToFirebaseServer(data);
                    }

                } else {
                    Log.d(TAG, "Error getting documents: ", task.getException());
                }
            }
        });

        NotificationHelper helper;
        Notification.Builder builder;

        Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        helper = new NotificationHelper(this);
        builder = helper.getLootBoxNotification(title, defaultSoundUri);
        helper.getManager().notify(new Random().nextInt(), builder.build());
        builder.setContentIntent(pendingIntent);

    }
}

标签： javaandroidfirebase-cloud-messaging

Answer 1

这是你的代码

NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
                .setSmallIcon(R.drawable.app_logo)
                .setContentText(description)
                .setAutoCancel(true)
                .setSound(defaultSoundUri);
        builder.setContentIntent(pendingIntent);

在这里你已经设置为

setAutoCancel(true);

当您的应用程序处于前台时，此方法将取消所有通知。将其设置为假。