AltBeacon api 在测距信标时返回空集合

Posted 2023-03-05

【中文标题】AltBeacon api 在测距信标时返回空集合

【英文标题】：AltBeacon api return empty collection while ranging beacons

【发布时间】：2018-01-30 13:44:11

【问题描述】：

我正在尝试对信标进行测距，并且正在按照此处所写的内容进行操作： http://altbeacon.github.io/android-beacon-library/samples.html

didRangeBeaconsInRegion 方法正在触发，但集合始终为空。

我已经通过 altbeacon 安装了“定位”，它找到了 3 个信标。

这是我的代码：我错过了什么吗？

public  class BeaconSingletone implements BeaconConsumer 

    private static BeaconSingletone instance;

    private final org.altbeacon.beacon.BeaconManager beaconManager2;
    private  ArrayList<BeaconThin> listNearBeacons = new ArrayList<>();




    BeaconRegion region = new BeaconRegion("ranged region",
                              UUID.fromString("B9407F30-F5F8-466E-AFF9-25556B57FE6D"), null, null);

    private List<EventInterface> listeners = new ArrayList<EventInterface>();

    private BeaconSingletone()
    

        beaconManager2 = org.altbeacon.beacon.BeaconManager.getInstanceForApplication(ar_activity.get());
        // To detect proprietary beacons, you must add a line like below corresponding to your beacon
        // type.  Do a web search for "setBeaconLayout" to get the proper expression.
         beaconManager2.getBeaconParsers().add(new BeaconParser().
                setBeaconLayout("m:2-3=beac,i:4-19,i:20-21,i:22-23,p:24-24,d:25-25"));
        beaconManager2.bind(this);



    public static BeaconSingletone getInstance() 
        if(instance == null) 
            instance = new BeaconSingletone();
        
        return instance;
    
    private void showNotification(Region region, final List<Beacon> list) 
        listNearBeacons.clear();
        listNearBeacons.add(new BeaconThin(3514,7580,-1));
        for (Iterator<EventInterface> i = listeners.iterator(); i.hasNext(); ) 
            EventInterface item = i.next();
            //item.NewBeaconFound(list.get(0).getMajor(),list.get(0).getMinor(),Utils.computeAccuracy(list.get(0)));
            item.NewBeaconsFound(listNearBeacons);
        
        return;




    



    @Override
    public void onBeaconServiceConnect() 
        beaconManager2.addRangeNotifier(new RangeNotifier() 
            @Override
            public void didRangeBeaconsInRegion(Collection<org.altbeacon.beacon.Beacon> beacons, org.altbeacon.beacon.Region region) 
                if (beacons.size() > 0) 
                    Log.i("BeaconManager", "The first beacon I see is about "+beacons.iterator().next().getDistance()+" meters away.");
                
            
        );
        try 
            beaconManager2.startRangingBeaconsInRegion(new org.altbeacon.beacon.Region("mybeacons", null, null, null));
         catch (RemoteException e)     


    

    

    @Override
    public Context getApplicationContext() 
        return ar_activity.get();
    

    @Override
    public void unbindService(ServiceConnection serviceConnection) 
        ar_activity.get().unbindService(serviceConnection);
    

    @Override
    public boolean bindService(Intent intent, ServiceConnection serviceConnection, int i) 
        return ar_activity.get().bindService(intent, serviceConnection, i);
    

【参考方案1】：

您需要为您正在使用的信标类型添加信标布局（iBeacon？）。替换这一行：

beaconManager2.getBeaconParsers().add(new BeaconParser(). setBeaconLayout("m:2-3=beac,i:4-19,i:20-21,i:22-23,p:24-24,d:25-25"));

从这里使用正确的布局： https://beaconlayout.wordpress.com

【讨论】：

是的，这正是问题所在。我不得不将其更改为：""m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24" 谢谢