使用 altBeacon 库的 Android 中未显示所有信标

Question

我正在使用 AltBEacon Android library 为 Android 设备开发 iBeacon 应用程序。我正在扫描信标，但是，只找到了四个信标中的两个（有时是 1/4）。

我将mBeaconManager.setForegroundScanPeriod(5000l);增加到 5 秒，但结果仍然相同。我不确定我用于绑定详细信息以查看的 CustomAdapter 是否有误，或者问题出在移动设备上（我使用的是 Galaxy Note II - Android 4.4.2 (KitKat)）？ 谁能找出我的错误？

另一个问题是从设备到信标的距离计算返回不正确（当我距离它大约 0.5 米时，它 returns 在 3-6 米之间）

我做错了什么？

注：Beacon的UUID、Major、Minors我都检查过有没有错误。我增加了扫描时间。 None 其中有效。

这里是开始监听测距的Fragment：

public class FragmentScanBeacons extends Fragment implements BeaconConsumer{ public static Region mRegion = new Region("Server", Identifier.parse("Here is my UUID"), null, null); private BeaconManager mBeaconManager; private BeaconBaseAdapter beaconBaseAdapter; private ListView beaconsListLv; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mBeaconManager = BeaconManager.getInstanceForApplication(getActivity()); //BEACON PARSER mBeaconManager.getBeaconParsers().add(new BeaconParser().setBeaconLayout("m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24")); //mBeaconManager.debug = true; beaconBaseAdapter = new BeaconBaseAdapter(getActivity()); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_beacons, container, false); //UI beaconsListLv = (ListView) view.findViewById(R.id.beaconsListView); //Set Adapter beaconsListLv.setAdapter(beaconBaseAdapter); //Check for bluetooth and Scan for Beacon verifyBluetooth(); //Start Monitoring and Ranging mBeaconManager.bind(this); return view; } @Override public void onResume() { super.onResume(); if(mBeaconManager.isBound(this)){ mBeaconManager.setBackgroundMode(false); } } @Override public void onPause() { super.onPause(); if(mBeaconManager.isBound(this)){ mBeaconManager.setBackgroundMode(true); } } @Override public void onDestroy() { super.onDestroy(); mBeaconManager.unbind(this); } @Override public void onBeaconServiceConnect() { try { //Scan lasts for SCAN_PERIOD time mBeaconManager.setForegroundScanPeriod(1000l); //mBeaconManager.setBackgroundScanPeriod(0l); //Wait every SCAN_PERIOD_INBETWEEN time mBeaconManager.setForegroundBetweenScanPeriod(0l); //Update default time with the new one mBeaconManager.updateScanPeriods(); } catch (RemoteException e){ e.printStackTrace(); } //Set Monitoring mBeaconManager.setMonitorNotifier(new MonitorNotifier() { @Override public void didEnterRegion(Region region) { Log.d("TEST", "ENTERED beacon region"); //Start Raning as soon as you detect a beacon try { mBeaconManager.startRangingBeaconsInRegion(mRegion); } catch (RemoteException e) { e.printStackTrace(); } } @Override public void didExitRegion(Region region) { Log.d("TEST", "EXITED beacon region"); } @Override public void didDetermineStateForRegion(int state, Region region) { Log.d("TEST", "SWITCHED from seeing/not seeing beacon to state " + state); } }); //Set Ranging mBeaconManager.setRangeNotifier(new RangeNotifier() { @Override public void didRangeBeaconsInRegion(final Collection<Beacon> beacons, Region region) { if (beacons != null && beacons.size() > 0) { getActivity().runOnUiThread(new Runnable() { @Override public void run() { beaconBaseAdapter.initAll(beacons); } }); } } }); try { //Start Monitoring mBeaconManager.startMonitoringBeaconsInRegion(mRegion); } catch (RemoteException e) { e.printStackTrace(); } } @Override public Context getApplicationContext() { return getActivity().getApplicationContext(); } @Override public void unbindService(ServiceConnection serviceConnection) { getActivity().unbindService(serviceConnection); } @Override public boolean bindService(Intent intent, ServiceConnection serviceConnection, int mode) { return getActivity().bindService(intent, serviceConnection, mode); } }

这里是自定义适配器：

public class BeaconBaseAdapter extends BaseAdapter { private Context myContext; private LayoutInflater inflater; public static ArrayList<Beacon> beacons; public BeaconBaseAdapter(Context context) { this.myContext = context; this.inflater = LayoutInflater.from(context); this.beacons = new ArrayList<Beacon>(); } public void initAll(Collection<Beacon> newBeacons) { this.beacons.clear(); this.beacons.addAll(newBeacons); notifyDataSetChanged(); } @Override public int getCount() { return beacons.size(); } @Override public Beacon getItem(int position) { return beacons.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { if (convertView == null) { convertView = inflater.inflate(R.layout.beacon_list_row, null); convertView.setTag(new ViewHolder(convertView)); } bind(getItem(position), position, convertView); return convertView; } private void bind(Beacon beacon, int position, View view) { ViewHolder holder = (ViewHolder) view.getTag(); holder.manufacturerTextView.setText("Manufacturer: " + beacon.getManufacturer()); holder.idOneTextView.setText("UUID: " + beacon.getId1()); holder.idTwoTextView.setText("Major: " + beacon.getId2()); holder.idThreeTextView.setText("Minor: " + beacon.getId3()); holder.txPowerTextView.setText("TX-Power: " + beacon.getTxPower()); holder.rssiTextView.setText("RSSI: " + beacon.getRssi()); holder.distanceTextView.setText(String.format("DISTANCE: (%.2f m)", beacon.getDistance())); holder.nameTextView.setText("Bluetooth Name: " + beacon.getBluetoothName()); holder.addressTextView.setText("Bluetooth Adrs: " + beacon.getBluetoothAddress()); } static class ViewHolder { final TextView nameTextView; final TextView manufacturerTextView; final TextView idOneTextView; final TextView idTwoTextView; final TextView idThreeTextView; final TextView txPowerTextView; final TextView rssiTextView; final TextView distanceTextView; final TextView addressTextView; ViewHolder(View view) { nameTextView = (TextView) view.findViewWithTag("name"); manufacturerTextView = (TextView) view.findViewWithTag("manufacturer"); idOneTextView = (TextView) view.findViewWithTag("id_one"); idTwoTextView = (TextView) view.findViewWithTag("id_two"); idThreeTextView = (TextView) view.findViewWithTag("id_three"); txPowerTextView = (TextView) view.findViewWithTag("tx_power"); rssiTextView = (TextView) view.findViewWithTag("rssi"); distanceTextView = (TextView) view.findViewWithTag("distance"); addressTextView = (TextView) view.findViewWithTag("address"); } } }

Answer 1

一些想法：

尝试使用现成的信标检测程序，例如 Locate，它在后台使用相同的 Android 信标库。如果程序可靠地检测到您的信标，则可能是您提到的自定义代码中的问题。
确保您的信标传输频率足够高。基线传输频率为 10 赫兹，但具有默认设置的库将可靠地拾取传输频率至少为 1 赫兹的信标。按照您的描述增加 mBeaconManager.setForegroundScanPeriod(); 应该会有所帮助，但是如果信标仅以 0.1 Hz 的频率传输，那么您仍然会遇到您描述的问题。
一些 Android 设备有一个组合的 Wi-Fi/Bluetooth 芯片，可以防止这两种无线电同时可靠运行。尝试禁用 Wi-Fi，看看是否会得到相同的结果。

Answer 2

好的，我终于解决了。我是按照航标MAC address点的。所以代替：

public void initAll(Collection<Beacon> newBeacons) {
    this.beacons.clear();
    this.beacons.addAll(newBeacons);
}

我做到了：

public void initAll(Collection<Beacon> newBeacons) {

    this.beacons.clear();
    this.beacons.addAll(newBeacons);

    //Sort
    Collections.sort(this.beacons, new Comparator<Beacon>() {
        @Override
        public int compare(Beacon b1, Beacon b2) {
            String mac1 = b1.getBluetoothAddress();
            String mac2 = b2.getBluetoothAddress();

            return mac1.compareTo(mac2);
        }
    });
}

使用 altBeacon 库的 Android 中未显示所有信标

All beacons are not shown in Android using altBeacon library

android

baseadapter

ibeacon-android

android-ibeacon

altbeacon