要在后台使用前台服务扫描beacons并使RegionBootstrap / BootstrapNotifier正常工作，您可以按照以下步骤进行操作：

1. 确保您的应用程序已正确配置AltBeacon库。您可以在build.gradle文件中添加以下依赖项：

implementation 'org.altbeacon:android-beacon-library:2.16.3'

2. 在AndroidManifest.xml文件中添加以下权限：

3. 创建一个带有前台服务的Service类。这个服务类将用于扫描beacons并与RegionBootstrap / BootstrapNotifier进行通信。以下是一个示例代码：

import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.graphics.Color;
import android.os.Build;
import android.os.IBinder;
import android.support.v4.app.NotificationCompat;
import android.util.Log;

import org.altbeacon.beacon.Beacon;
import org.altbeacon.beacon.BeaconConsumer;
import org.altbeacon.beacon.BeaconManager;
import org.altbeacon.beacon.Region;

public class BeaconService extends Service implements BeaconConsumer, BootstrapNotifier {
    private static final String TAG = "BeaconService";
    private BeaconManager beaconManager;

    @Override
    public void onCreate() {
        super.onCreate();

        // 初始化BeaconManager
        beaconManager = BeaconManager.getInstanceForApplication(this);
        beaconManager.getBeaconParsers().add(new BeaconParser().setBeaconLayout(BeaconParser.EDDYSTONE_UID_LAYOUT));

        // 设置前台服务通知
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            String channelId = "beacon_scanning_channel";
            NotificationChannel channel = new NotificationChannel(channelId, "Beacon Scanning", NotificationManager.IMPORTANCE_DEFAULT);
            channel.setDescription("Scanning for Beacons");
            channel.enableLights(false);
            channel.setLightColor(Color.BLUE);
            channel.enableVibration(false);
            NotificationManager notificationManager = getSystemService(NotificationManager.class);
            notificationManager.createNotificationChannel(channel);

            NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, channelId);
            Notification notification = notificationBuilder.setOngoing(true)
                    .setSmallIcon(R.mipmap.ic_launcher)
                    .setContentTitle("Beacon Scanning")
                    .setContentText("Scanning for Beacons")
                    .setContentIntent(getMainActivityIntent())
                    .build();

            startForeground(1, notification);
        } else {
            NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, channelId);
            Notification notification = notificationBuilder.setOngoing(true)
                    .setSmallIcon(R.mipmap.ic_launcher)
                    .setContentTitle("Beacon Scanning")
                    .setContentText("Scanning for Beacons")
                    .setPriority(NotificationCompat.PRIORITY_DEFAULT)
                    .setContentIntent(getMainActivityIntent())
                    .build();

            startForeground(1, notification);
        }

        // 设置BeaconConsumer
        beaconManager.bind(this);
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        return START_STICKY;
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        beaconManager.unbind(this);
        stopForeground(true);
    }

    @Override
    public void onBeaconServiceConnect() {
        // 定义要扫描的Region
        Region region = new Region("all-beacons-region", null, null, null);

        // 设置BootstrapNotifier
        beaconManager.addBootstrapNotifier(this);

        try {
            // 启动Beacon扫描
            beaconManager.startMonitoringBeaconsInRegion(region);
        } catch (RemoteException e) {
            Log.e(TAG, "Error starting beacon monitoring", e);
        }
    }

    @Override
    public Context getApplicationContext() {
        return this;
    }

    @Override
    public void didEnterRegion(Region region) {
        Log.d(TAG, "Entered region: " + region.getUniqueId());
    }

    @Override
    public void didExitRegion(Region region) {
        Log.d(TAG, "Exited region: " + region.getUniqueId());
    }

    @Override
    public void didDetermineStateForRegion(int state, Region region) {
        Log.d(TAG, "Region state changed: " + state);
    }

    private PendingIntent getMainActivityIntent() {
        Intent intent = new Intent(this, MainActivity.class);
        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
        return PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG