通知必须不得发送给未登录的用户

Question

我正在使用firebase消息发送通知。我想要的是，如果用户仅登录到该应用程序，那么她必须收到通知。但是，无论用户是否已登录应用程序，通知开始倾注用户下载应用程序的时刻。如何处理这种情况？

我没有从互联网上获得任何帮助。任何帮助都将不胜感激。

myfirebasemessagingservice.java

    FirebaseUser firebaseUser;
    private FirebaseAuth mAuth=FirebaseAuth.getInstance();
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
           String notificationTitle = null, notificationBody = null;
//shared preference to check if the user has logged in or not
SharedPreferences preferences=getSharedPreferences(LOGIN_PREF_NAME,MODE_PRIVATE);
        String login_status=preferences.getString("accepted",null);


           if (remoteMessage.getNotification() != null) {
                    Log.d(REGTAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
                    notificationTitle = remoteMessage.getNotification().getTitle();
                    notificationBody = remoteMessage.getNotification().getBody();
                }
    mAuthListener=new FirebaseAuth.AuthStateListener() {
    @Override
    public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
    if (firebaseAuth.getCurrentUser() != null && !TextUtils.isEmpty(login_status) && login_status.equals("true")) {
    PendingIntent pendingIntent=PendingIntent.getActivity(MyFirebaseMessagingService.this, INT, intent,
                        PendingIntent.FLAG_ONE_SHOT);
                final NotificationCompat.Builder notificationBuilder;
                notificationBuilder = (NotificationCompat.Builder) new NotificationCompat.Builder(this)
                        .setAutoCancel(true)   //Automatically delete the notification
                        .setSmallIcon(R.mipmap.ic_launcher) //Notification icon
                        .setContentIntent(pendingIntent)
                        .setContentTitle(notificationTitle)
                        .setContentText(notificationBody);
                mAuth = FirebaseAuth.getInstance();
                firebaseUser=mAuth.getCurrentUser();

                mAuthListener = new FirebaseAuth.AuthStateListener() {
                    @Override
                    public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {

                        if (firebaseUser != null ) {
                            NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
                            notificationManager.notify(INT, notificationBuilder.build());
                        }
                    }
                };
                mAuth.addAuthStateListener(mAuthListener);
        }
    }

Answer 1

当用户登录"保存用户名"one_answers"共享"偏好中的用户名和密码时

@Override
public void onMessageReceived(String from, Bundle data) {
    utils = new Utils(this);
    if (firebaseAuth.getCurrentUser() != null && login_status != null && login_status.equals("true")) {
        sendNotification1(data.getString("message"),data.getString("direction"),data.getString("title"));
    }
}