java - 我的应用程序中的 ListenOrderService（通知）中的错误

Question

我正在测试一个交付 android 应用程序，我在通知系统中有一个错误。当它只有一家餐厅时，一切都运行良好，但是当我更改为多家餐厅时，它停止出现通知，无论是客户端下订单时的服务器端，还是服务器更新订单时的客户端。查看我的订单状态服务（服务器端）：

public class OrderStatusService extends Service {

    FirebaseDatabase firebaseDatabase;
    DatabaseReference databaseReference;

    public OrderStatusService() {
    }

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onCreate() {
        super.onCreate();
        firebaseDatabase = FirebaseDatabase.getInstance();
        databaseReference = firebaseDatabase.getReference("Restaurants").child(Common.restaurantSelected)
                .child("Request");
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        databaseReference.addChildEventListener(new ChildEventListener() {
            @Override
            public void onChildAdded(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {

            }

            @Override
            public void onChildChanged(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {
                Request request = dataSnapshot.getValue(Request.class);
                assert request != null;
                if(request.getPhone().equals(Common.currentUser.getPhone()))
                    showNotification(dataSnapshot.getKey(), request);
            }

            @Override
            public void onChildRemoved(@NonNull DataSnapshot dataSnapshot) {

            }

            @Override
            public void onChildMoved(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {

            }

            @Override
            public void onCancelled(@NonNull DatabaseError databaseError) {

            }
        });
        return super.onStartCommand(intent, flags, startId);
    }

    //Helper method
    private void showNotification(String key, Request request) {
        Intent intent = new Intent(getBaseContext(), OrderStatusActivity.class);
        intent.putExtra("phone", request.getPhone());
        PendingIntent pendingIntent = PendingIntent.getActivity
                (getBaseContext(), 0,  intent, PendingIntent.FLAG_UPDATE_CURRENT);

        NotificationCompat.Builder builder = new NotificationCompat.Builder(getBaseContext());
        builder.setDefaults(Notification.DEFAULT_ALL)
                .setWhen(System.currentTimeMillis())
                .setTicker("ParisCart")
                .setContentTitle("Pedido Atualizado")
                .setContentText("Pedido #" + key + " foi atualizado para " + Common.getStatus(request.getStatus()))
                .setContentIntent(pendingIntent)
                .setSmallIcon(R.drawable.ic_access_time_black_24dp);

        NotificationManager notificationManager = (NotificationManager) getBaseContext().getSystemService(NOTIFICATION_SERVICE);
        assert notificationManager != null;
        notificationManager.notify(1, builder.build());
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        firebaseDatabase = null;
        databaseReference = null;
    }
}

订单侦听服务的客户也是如此：

public class OrderListenService extends Service {

    FirebaseDatabase firebaseDatabase;
    DatabaseReference databaseReference;

    public OrderListenService() {
    }

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onCreate() {
        super.onCreate();
        firebaseDatabase = FirebaseDatabase.getInstance();
        databaseReference = firebaseDatabase.getReference("Restaurants").child(Common.restaurantSelected)
                .child("Request");
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        databaseReference.addChildEventListener(new ChildEventListener() {
            @Override
            public void onChildAdded(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {
                Request request = dataSnapshot.getValue(Request.class);
                assert request != null;
                if(request.getStatus().equals("0") && request.getPhone().equals(Common.currentUser.getPhone()))
                    showNotification(dataSnapshot.getKey(), request);
            }

            @Override
            public void onChildChanged(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {
            }

            @Override
            public void onChildRemoved(@NonNull DataSnapshot dataSnapshot) {

            }

            @Override
            public void onChildMoved(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {

            }

            @Override
            public void onCancelled(@NonNull DatabaseError databaseError) {

            }
        });
        return super.onStartCommand(intent, flags, startId);
    }

    //Helper method
    private void showNotification(String key, Request request) {
        Intent intent = new Intent(getBaseContext(), OrderStatusActivityServer.class);
        intent.putExtra("phone", request.getPhone());
        PendingIntent pendingIntent = PendingIntent.getActivity
                (getBaseContext(), 0,  intent, PendingIntent.FLAG_UPDATE_CURRENT);

        NotificationCompat.Builder builder = new NotificationCompat.Builder(getBaseContext());
        builder.setDefaults(Notification.DEFAULT_ALL)
                .setWhen(System.currentTimeMillis())
                .setTicker("ParisCart")
                .setContentTitle("Pedido Novo")
                .setContentText("Pedido #" + key + " adicionado")
                .setContentIntent(pendingIntent)
                .setSmallIcon(R.drawable.ic_access_time_black_24dp);

        NotificationManager notificationManager = (NotificationManager) getBaseContext().getSystemService(NOTIFICATION_SERVICE);
        assert notificationManager != null;
        notificationManager.notify(2, builder.build());
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        firebaseDatabase = null;
        databaseReference = null;
    }
}

我不知道这是 Firebase 的东西，还是一件小事，比如 currentUser、restaurantSelected 等......

标签： javaandroid