java - 将我的 Android 设备变成信标并进行检测

Question

这是正确的做法吗？ AM 使用此示例 https://altbeacon.github.io/android-beacon-library/samples.html

   public class App extends Application
    implements BootstrapNotifier, BeaconConsumer, RangeNotifier {
private final String TAG = "Application ";
protected static final Region beaconRegion = new Region("2f234454-cf6d-4a0f-adf2-f4911ba9ffa6", null, null, null);
protected BeaconManager beaconManager = null;
private RegionBootstrap regionBootstrap;
private BackgroundPowerSaver backgroundPowerSaver;
protected static String sLog = "";
@Override
public void onCreate() {
    super.onCreate();
    logIt(TAG, beaconRegion.getId1()+"onCreate - In"+beaconRegion.getUniqueId());
    beaconManager = org.altbeacon.beacon.BeaconManager.getInstanceForApplication(this);
    beaconManager.getBeaconParsers().clear();
    beaconManager.getBeaconParsers().add(new BeaconParser().
            setBeaconLayout("m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24"));//iBeacon (tutti)
    //--- wake up the app when a beacon is seen
    regionBootstrap = new RegionBootstrap(this, beaconRegion);
    //--- activate power saver
    backgroundPowerSaver = new BackgroundPowerSaver(this);
    beaconManager.bind(this);
    logIt(TAG, "onCreate - Out");
}
private void logIt (String TAG, String msg) {
    sLog += TAG + msg + "\n";
    Log.w(TAG, msg);
}
//-------------------------//
//--- BootstrapNotifier ---//
//-------------------------//
@Override
public void didDetermineStateForRegion(int state, Region region) {
    String msg = "didDetermineStateForRegion ";
    switch(state) {
        case MonitorNotifier.INSIDE:
            msg +="(INSIDE)";
            break;
        case MonitorNotifier.OUTSIDE:
            msg +="(OUTSIDE)";
            break;
        default:
            msg +="(state=" +state +")";
            break;
    }
    logIt(TAG, msg);
}
@Override
public void didEnterRegion(Region arg0) {
    logIt(TAG, "didEnterRegion - In");
    try {
        beaconManager.startRangingBeaconsInRegion(beaconRegion);
        logIt(TAG,"dER - startRangingBeaconsInRegion OK");
    } catch (RemoteException e) {
        logIt(TAG, "dER - startRangingBeaconsInRegion Err " +e);
    }
    logIt(TAG, "didEnterRegion - Out");
}
@Override
public void didExitRegion(Region region) {
    logIt(TAG, "didExitRegion - In");
    try {
        beaconManager.stopRangingBeaconsInRegion(beaconRegion);
        logIt(TAG,"dXR - stopRangingBeaconsInRegion OK");
    } catch (RemoteException e) {
        logIt(TAG, "dXR - stopRangingBeaconsInRegion Err " +e);
    }
    logIt(TAG, "didExitRegion - Out");
}
//----------------------//
//--- BeaconConsumer ---//
//----------------------//
@Override
public void onBeaconServiceConnect() {
    logIt(TAG, "onBeaconServiceConnect - In");
    beaconManager.setRangeNotifier(this);
    logIt(TAG, "onBeaconServiceConnect - Out");
}
//---------------------//
//--- RangeNotifier ---//
//---------------------//
@Override
public void didRangeBeaconsInRegion(Collection<Beacon> beacons, Region region) {
    logIt(TAG, "didRangeBeaconsInRegion - " +beacons.size() +" beacons");
    Toast.makeText(getApplicationContext(), beaconRegion.getId1()+" beacon detected "+beacons.size(),
            Toast.LENGTH_SHORT).show();
    for(Beacon beac: beacons)
    {
        System.out.println(beac.getId1()+"id 1"+TAG);
       if(beac.getId1().equals("2f234454-cf6d-4a0f-adf2-f4911ba9ffa6")/send notification
    }
}
 }

所以基本上，扩展应用程序的类正在监听周围的信标。下面是如何将我的手机变成信标。我在单击按钮的 Activity 中执行此操作。因此，有两部手机都下载了应用程序，一旦他单击一个应用程序按钮，我希望另一部手机检测到它，因为我已经在扩展应用程序类中实现了。

将你的 android 转为信标代码。

              Beacon beacon = new Beacon.Builder()
                        .setId1("2f234454-cf6d-4a0f-adf2-f4911ba9ffa6") // UUID for beacon
                        .setId2("1") // Major for beacon
                        .setId3("5") // Minor for beacon
                        .setManufacturer(0x004C) // Radius Networks.0x0118  Change this for other beacon layouts//0x004C for iPhone
                        .setTxPower(-56) // Power in dB
                        .setDataFields(Arrays.asList(new Long[]{0l})) // Remove this for beacon layouts without d: fields
                        .build();
                BeaconParser beaconParser = new BeaconParser()
                        .setBeaconLayout("m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24");
                beaconTransmitter = new BeaconTransmitter(MenuActivity.this, beaconParser);
                beaconTransmitter.startAdvertising(beacon, new AdvertiseCallback() {
                    @Override
                    public void onStartFailure(int errorCode) {
                        Log.e("tag", "Advertisement start failed with code: " + errorCode);
                    }
                    @Override
                    public void onStartSuccess(AdvertiseSettings settingsInEffect) {
                        Log.i("tag", "Advertisement start succeeded.");
                        Toast.makeText(MenuActivity.this, "advertisement start succeeded",
                                Toast.LENGTH_SHORT).show();
                        System.out.println("startedddddddddddd");
                    }
                });
                //   beaconTransmitter.stopAdvertising();
            }
            catch(Exception o)
            {
                System.out.println("affda "+o.getMessage());
            }

我还遇到一个问题，didenterregion 和 didRangeBeaconsInRegion 被多次触发，因此我多次向用户发送许多通知。它对用户不友好。

Answer 1

didRangeBeaconsInRegion 回调应该被多次调用——这就是测距的工作原理。当检测到信标时，它大约每秒调用一次，告诉您它在那里并为您提供距离估计。

如果您只想在第一次调用此方法时触发一次通知，那么您可以为此特定信标设置一个标志。

以下是您可以用来执行此操作的一些代码示例:

// Add this to the top of your class
private HashMap<String,Boolean> mAlreadySentNotification = new HashMap<String,Boolean>();

...

// Add this to the inside of your didRangeBeaconsInRegion method
if (mAlreadySentNotification.get(beacon.toString())) {
  mAlreadySentNotification.put(beacon.toString(), true);
  // Send notification here.
}