如何处理app在后台时的fcm，以及在颤动中通知到达时播放声音

public class MyFirebaseMessagingService extends FirebaseMessagingService {

    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        // 处理接收到的消息
        if (remoteMessage.getNotification() != null) {
            // 构建通知
            NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
                    .setContentTitle(remoteMessage.getNotification().getTitle())
                    .setContentText(remoteMessage.getNotification().getBody())
                    .setSmallIcon(R.drawable.notification_icon)
                    .setVibration(new long[]{1000, 1000, 1000, 1000}) // 设置振动模式
                    .setSound(Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.notification_sound)); // 设置通知到达时播放的声音

            // 显示通知
            NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
            notificationManager.notify(0, builder.build());
        }
    }
}