Firebase通知未显示在我的模拟器中

Question

我正在尝试使用Firebase在模拟器中显示通知。通知显示在logcat视图中，但是，模拟器显示消息“无法在通道notify_001上发布通知” 引用的问题对我不起作用。我发布了一个新问题，因此列出了我的确切代码。 我的SDK compileSdkVersion 26 minSdkVersion 18 targetSdkVersion 26

代码：

public class MyAndroidFirebaseMsgService extends FirebaseMessagingService {
    private static final String TAG = "MyAndroidFCMService";
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        //Log data to Log Cat
        Log.d(TAG, "From: " + remoteMessage.getFrom());
        Log.d(TAG, "Notification Message Body: " + remoteMessage.getNotification().getBody());
        Log.i(TAG, "instance id " + FirebaseInstanceId.getInstance().getId());
        //create notification
        createNotification(remoteMessage.getNotification().getBody());
    }

    private void createNotification( String messageBody) {
        Intent intent = new Intent( this , ResultActivity. class );
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent resultIntent = PendingIntent.getActivity( this , 0, intent,
                PendingIntent.FLAG_ONE_SHOT);

        Uri notificationSoundURI = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder mNotificationBuilder = new NotificationCompat.Builder
                ( this, "Notify_001")
                .setSmallIcon(R.mipmap.ic_launcher)
                .setContentTitle("Android Tutorial Point FCM Tutorial")
                .setContentText(messageBody)
                .setAutoCancel( true )
                .setSound(notificationSoundURI)
                .setContentIntent(resultIntent);

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

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel = new NotificationChannel("notify_001",
                    "Channel human readable title",
                    NotificationManager.IMPORTANCE_DEFAULT);
            notificationManager.createNotificationChannel(channel);
        }

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