要将Android Beacon库作为前台服务正常运行，您可以使用以下代码示例：

1. 创建一个名为BeaconService的前台服务类：

public class BeaconService extends Service {
    private static final int NOTIFICATION_ID = 1;

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        startForeground(NOTIFICATION_ID, createNotification());
        // 开始Beacon扫描逻辑
        return START_STICKY;
    }

    @Override
    public void onDestroy() {
        stopForeground(true);
        // 停止Beacon扫描逻辑
        super.onDestroy();
    }

    private Notification createNotification() {
        NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "channel_id")
                .setSmallIcon(R.drawable.ic_notification)
                .setContentTitle("Beacon Service")
                .setContentText("Running in foreground")
                .setPriority(NotificationCompat.PRIORITY_DEFAULT);

        return builder.build();
    }

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

2. 在您的MainActivity中启动BeaconService：

public class MainActivity extends AppCompatActivity {
    private static final int PERMISSION_REQUEST_FINE_LOCATION = 1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // 检查位置权限
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                requestPermissions(new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, PERMISSION_REQUEST_FINE_LOCATION);
            } else {
                startBeaconService();
            }
        } else {
            startBeaconService();
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        if (requestCode == PERMISSION_REQUEST_FINE_LOCATION) {
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                startBeaconService();
            } else {
                // 处理未授予位置权限的情况
            }
        }
    }

    private void startBeaconService() {
        Intent serviceIntent = new Intent(this, BeaconService.class);
        ContextCompat.startForegroundService(this, serviceIntent);
    }
}

在这个示例中，我们创建了一个名为BeaconService的前台服务，该服务在前台运行时显示一个通知。在MainActivity中，我们检查位置权限并启动BeaconService。

请注意，您还需要在AndroidManifest.xml文件中添加以下权限和服务声明：

这样，Android Beacon库将作为前台服务正常运行，并且用户将在通知栏中看到一个显示服务正在运行的通知。