AltBeacon不稳定用于OnyxBeacons，通过didEnterRegion和didExitRegion反复循环

Question

我正在构建一个使用AltBeacon库来支持Onyx信标(信标一号)和万向节信标(系列21)的应用程序

我的测试设备是Nexus 7,2013年，配备了Android4.4.4 KitKat和Onyx信标。灯塔就在我的设备旁边不到一米的地方，我不会移动它。该信标被检测到并到达didEnterRegion，然后在大约一分钟后到达didExitRegion，然后循环重复。

我们还用不同的(Onyx)信标在不同的设备(三星手机)上测试了这一点。问题仍在发生。请注意，这只发生在Onyx信标(信标一号)上。万向节信标(系列21)只在范围内触发一次。

我用的是正确的灯塔分析器字符串吗？我是否正确地实现了这一点？我真的没有主意了，我想支持这两个信标。

BaseApplication

public class BaseApplication extends Application {

    @Override
    public void onCreate() {
        super.onCreate();
        startService(new Intent(this, BeaconMonitoringService.class));
    }

}

BeaconMonitoringService

public class BeaconMonitoringService extends Service implements BeaconConsumer{

    private Context context;

    private BeaconService service;
    private BeaconManager beaconManager;
    private NotificationCompat.Builder notifBuilder;

    @Override
    public void onCreate(){
        super.onCreate();
        context = getBaseContext();
        beaconManager = BeaconManager.getInstanceForApplication(this);
        beaconManager.setBackgroundMode(true);

        beaconManager.setBackgroundScanPeriod(1100l);
        beaconManager.setBackgroundBetweenScanPeriod(15000l);

        String[] beaconParsers = new String[] { "m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24", "m:2-3=beac,i:4-19,i:20-21,i:22-23,p:24-24,d:25-25", "m:2-3=0203,i:14-19l,d:10-13,p:9-9" };

        for(String beacon : beaconParsers){
            Log.i("BeaconService","layout: "+beacon);
            beaconManager.getBeaconParsers().add(new BeaconParser().setBeaconLayout(beacon));           
        }
        beaconManager.bind(this);
    }

    @Override
    public void onBeaconServiceConnect() {
        beaconManager.setMonitorNotifier(new MonitorNotifier() {

            private String log;

            @Override
            public void didEnterRegion(Region region) {
                Beacon beacon = service.getBeacon(region.getId1().toString(), region.getId2().toString(), region.getId3().toString());
                log = "I just saw a beacon for the first time! "+region.getId1()+" "+region.getId2()+" "+region.getId3();
                Log.i("BeaconService", log);   
                sendNotification(beacon);
            }

            @Override
            public void didExitRegion(Region region) {
                Beacon beacon = service.getBeacon(region.getId1().toString(), region.getId2().toString(), region.getId3().toString());
                log = "I no longer see a beacon";
                Log.i("BeaconService", log);
            }

            @Override
            public void didDetermineStateForRegion(int state, Region region) {

            }
        });

        List<BackendRegion> regionList = Util.getRegionList();  
        for(BackendRegion region : regionList){
            ArrayList<Beacon> beaconList = region.getBeacons();
            for(Beacon beacon : beaconList){
                try {
                    String beaconString = region.getUuid().toLowerCase() + " " + beacon.getMajor() + " " + beacon.getMinor();
                    service.addBeacon(beacon);
                    beaconManager.startMonitoringBeaconsInRegion(new Region(beacon.getIdentifier(), Identifier.parse(region.getUuid()),Identifier.parse(beacon.getMajor()),Identifier.parse(beacon.getMinor())));
                } catch (RemoteException e) {    }
            }
        }

    }


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

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

    private void sendNotification(Beacon beacon, InteractiveImage interactiveImage) {
        this.notifBuilder =  new NotificationCompat.Builder(this)
                .setAutoCancel(true)
                .setContentTitle("Sample Beacon")
                .setContentText("A beacon was detected")
                .setSmallIcon(R.drawable.ic_launcher);

        Intent notifyIntent = new Intent(this, NotificationActivity.class);
        notifyIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_MULTIPLE_TASK);

        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notifyIntent, 0);
        notifBuilder.setContentIntent(pendingIntent);

        NotificationManager notificationManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.notify(Integer.parseInt(beacon.getId()), notifBuilder.build());

    }

}

日志

12-11 15:45:24.103 I/BeaconService: I just saw a beacon for the first time! 20cae8a0-a9cf-11e3-a5e2-0800200c9a66 7 44512
12-11 15:45:24.784 D/BluetoothAdapter: stopLeScan()
12-11 15:45:39.698 D/BluetoothAdapter: startLeScan(): null
12-11 15:45:39.709 D/BluetoothAdapter: onClientRegistered() - status=0 clientIf=5
12-11 15:45:40.830 D/BluetoothAdapter: stopLeScan()
12-11 15:45:55.794 D/BluetoothAdapter: startLeScan(): null
12-11 15:45:55.804 D/BluetoothAdapter: onClientRegistered() - status=0 clientIf=5
12-11 15:45:56.985 D/BluetoothAdapter: stopLeScan()
12-11 15:46:11.920 D/BluetoothAdapter: startLeScan(): null
12-11 15:46:11.950 D/BluetoothAdapter: onClientRegistered() - status=0 clientIf=5
12-11 15:46:13.091 D/BluetoothAdapter: stopLeScan()
12-11 15:46:27.996 D/BluetoothAdapter: startLeScan(): null
12-11 15:46:28.016 D/BluetoothAdapter: onClientRegistered() - status=0 clientIf=5
12-11 15:46:29.147 D/BluetoothAdapter: stopLeScan()
12-11 15:46:29.227 I/BeaconService: I no longer see a beacon
12-11 15:46:44.121 D/BluetoothAdapter: startLeScan(): null
12-11 15:46:44.141 D/BluetoothAdapter: onClientRegistered() - status=0 clientIf=5
12-11 15:46:44.402 I/BeaconService: I just saw a beacon for the first time! 20cae8a0-a9cf-11e3-a5e2-0800200c9a66 7 44512
12-11 15:46:45.282 D/BluetoothAdapter: stopLeScan()
12-11 15:47:00.197 D/BluetoothAdapter: startLeScan(): null
12-11 15:47:00.197 D/BluetoothAdapter: onClientRegistered() - status=0 clientIf=5
12-11 15:47:01.328 D/BluetoothAdapter: stopLeScan()
12-11 15:47:16.343 D/BluetoothAdapter: startLeScan(): null
12-11 15:47:16.363 D/BluetoothAdapter: onClientRegistered() - status=0 clientIf=5
12-11 15:47:17.514 D/BluetoothAdapter: stopLeScan()
12-11 15:47:32.418 D/BluetoothAdapter: startLeScan(): null
12-11 15:47:32.428 D/BluetoothAdapter: onClientRegistered() - status=0 clientIf=5
12-11 15:47:33.540 D/BluetoothAdapter: stopLeScan()
12-11 15:47:48.494 D/BluetoothAdapter: startLeScan(): null
12-11 15:47:48.504 D/BluetoothAdapter: onClientRegistered() - status=0 clientIf=5
12-11 15:47:49.635 D/BluetoothAdapter: stopLeScan()
12-11 15:48:04.620 D/BluetoothAdapter: startLeScan(): null
12-11 15:48:04.630 D/BluetoothAdapter: onClientRegistered() - status=0 clientIf=5
12-11 15:48:05.771 D/BluetoothAdapter: stopLeScan()
12-11 15:48:20.706 D/BluetoothAdapter: startLeScan(): null
12-11 15:48:20.706 D/BluetoothAdapter: onClientRegistered() - status=0 clientIf=5
12-11 15:48:21.827 D/BluetoothAdapter: stopLeScan()
12-11 15:48:36.821 D/BluetoothAdapter: startLeScan(): null
12-11 15:48:36.831 D/BluetoothAdapter: onClientRegistered() - status=0 clientIf=5
12-11 15:48:37.962 D/BluetoothAdapter: stopLeScan()
12-11 15:48:52.917 D/BluetoothAdapter: startLeScan(): null
12-11 15:48:52.927 D/BluetoothAdapter: onClientRegistered() - status=0 clientIf=5
12-11 15:48:54.058 D/BluetoothAdapter: stopLeScan()
12-11 15:49:09.003 D/BluetoothAdapter: startLeScan(): null
12-11 15:49:09.003 D/BluetoothAdapter: onClientRegistered() - status=0 clientIf=5
12-11 15:49:10.154 D/BluetoothAdapter: stopLeScan()
12-11 15:49:10.214 I/BeaconService: I no longer see a beacon

Answer 1

以下是一些小窍门：

• 检查Onyx的广告率。为了获得最好的效果，信标应该在标准的10赫兹上做广告。为了节省电池寿命，一些制造商放慢了这一广告速度。如果你有一个以1Hz或更少频率做广告的信标，信标扫描器可能会周期性地错过它。(由于蓝牙无线电噪声，无法检测到100%的数据包。)
• 如果你发现广告的频率是1Hz或更低，会在可能的情况下提高的广告率，这个问题应该解决。
• 如果不能提高信标的广告率，则可以减慢 Android灯塔图书馆的扫描速率，使其有更多的时间收集信标数据包。默认情况下，它使用1.1秒的扫描周期。您可以像下面这样使用一行代码来将速度降低到5秒。这将更可靠地工作与信标，不经常做广告，但也会给你更慢的响应时间的区域入口/出口。beaconManager.setForegroundScanPeriod(5000l);