无法增加信标扫描周期- Altbeacon库

Question

当我启动应用程序时，扫描开始，onBeaconServiceConnect()函数在2-3秒内触发。我需要增加它。我还使用后台信标扫描另一个类。我使用了另一个beaconManager object.Though，我使用setForegroundBetweenScanPeriod()函数来做这件事，它不起作用。onBeaconServiceConnect()函数在2-3秒内触发。我该怎么解决它呢？我的函数如下：

-我检测前台信标的主类

private void generateBeaconOptions() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        if (this.checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            final AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setTitle("This app needs location acces");
            builder.setMessage("Please grat location acces so this app can detect beacons");
            builder.setPositiveButton(android.R.string.ok, null);

            builder.setOnDismissListener(new DialogInterface.OnDismissListener() {
                @Override
                public void onDismiss(DialogInterface dialogInterface) {
                    requestPermissions(new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, PERMISSION_REQUEST_COARSE_LOCATION);
                }
            });
        }
    }
    beaconManager = 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,d:25-25"));

    region = new Region("com.example.myapp.boostrapRegion", null, null, null);
    beaconManager.setForegroundScanPeriod(1100l);
    beaconManager.setForegroundBetweenScanPeriod(30000l);
    beaconManager.bind(this);
}

@Override
public void onBeaconServiceConnect() {
    if(!ConfigFile.isDemo()) {
        beaconManager.setRangeNotifier(new RangeNotifier() {
            @Override
            public void didRangeBeaconsInRegion(Collection<Beacon> beacons, Region region) {
                if (beacons.size() > 0) {
                    UniPromClient.setIsInAnyBeaconRegion(true);
                    for (Beacon beacon : beacons) {
                        logToDisplay("Detected " + beacon.toString() + " with UUID " + beacon.getId1().toString() + " and Major ID " + beacon.getId2().toString() + " and Minor ID " + beacon.getId3().toString());
                        UniPromClient.setUniPromBeacon(new UniPromBeacon(beacon.getId1().toString(),
                                beacon.getId2().toString(),
                                beacon.getId3().toString()));
                        Handler handler = new Handler(Looper.getMainLooper());
                        handler.post(new Runnable() {

                            @Override
                            public void run() {
                                updateUserScoreAsUserStaying();
                            }
                        });

                        break;
                    }
                } else {
                    UniPromClient.setIsInAnyBeaconRegion(false);
                    UniPromClient.setUniPromBeacon(null);
                    logToDisplay("No iBeacons detected");
                }

                if (UniPromClient.isPrevIsAnyBeaconInRegion() != UniPromClient.isInAnyBeaconRegion()) {
                    if (UniPromClient.isInAnyBeaconRegion()) {
                        showMainActivityAlert("Uni Promotion alanına girdiniz :)");
                    } else if (!UniPromClient.isInAnyBeaconRegion() && UniPromClient.isPrevIsAnyBeaconInRegion()) {
                        showMainActivityAlert("Uni Promotion alanından çıktınız :(");
                    }
                    UniPromClient.setPrevIsAnyBeaconInRegion(UniPromClient.isInAnyBeaconRegion());
                    generateDrawerList();
                }
            }

        });

        try {
            beaconManager.startRangingBeaconsInRegion(region);
        } catch (RemoteException e) {
        }
    }
}

@Override
public void onCreate() {
    super.onCreate();
    BeaconManager beaconManager = BeaconManager.getInstanceForApplication(this);
    //BeaconManager.setsManifestCheckingDisabled(true);
    //beaconManager = 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,d:25-25"));
    beaconManager.setBackgroundScanPeriod(1000l);
    beaconManager.setBackgroundBetweenScanPeriod(5000l);
    Region region = new Region("com.example.myapp.boostrapRegion", null, null, null);
    regionBootstrap = new RegionBootstrap(this, region);
    //backgroundPowerSaver = new BackgroundPowerSaver(this);
}

Answer 1

如果在更改扫描周期时已经开始扫描，则必须调用beaconManager.updateScanPeriods()才能使更改生效。

此外，注意tgat要让前台/后台扫描周期自动切换，您必须使用显示为注释掉的BackgroundPowerSaver。如果启用，它将监视正在暂停和恢复的活动，并在看不到任何活动时将扫描速率设置为后台设置。

如果您不想使用BackgroundPowerSaver，则必须调用beaconManager.setBackgroundMode(true);来激活后台扫描速率。