引起扫描计划任务的android altbeacon

我正在使用AltBeacon库中的测距通知程序对信标进行30秒的测距。范围通知程序在应用程序类中,没有实现引导通知程序或beaconconsumer。程序在前台运行时会生成下面的代码,它不应该到达后台。

如果应用程序在前台运行,为什么会发生这种情况?

关于手机:Android 9.0谷歌像素2 图书馆版本:AltBeacon 2.15.2

11-28 16:43:44.052 13258-13258/com.testapp.app W/JobInfo: Requested interval +5m0s0ms for job 208352940 is too small; raising to +15m0s0ms
Requested flex 0 for job 208352940 is too small; raising to +5m0s0ms
 11-28 16:44:24.276 13258-13258/com.testapp.app W/JobInfo: Requested interval +5m0s0ms for job 208352940 is too small; raising to +15m0s0ms
Requested flex 0 for job 208352940 is too small; raising to +5m0s0ms
11-28 16:44:24.332 13258-13258/com.testapp.app W/JobInfo: Requested interval +5m0s0ms for job 208352940 is too small; raising to +15m0s0ms
11-28 16:44:24.426 13258-13258/com.testapp.app W/JobInfo: Requested interval +5m0s0ms for job 208352940 is too small; raising to +15m0s0ms
Requested flex 0 for job 208352940 is too small; raising to +5m0s0ms
11-28 16:44:25.010 13258-13258/com.testapp.app W/JobInfo: Requested interval +5m0s0ms for job 208352940 is too small; raising to +15m0s0ms
Requested flex 0 for job 208352940 is too small; raising to +5m0s0ms

下面是我认为与AltBeacon库相关的代码。

代码上下文:我在一个扩展应用程序的类中实现了范围通知程序和引导通知程序。当调用引导通知程序方法或从有问题的活动调用StartRanging方法时。当用户点击另一个活动的按钮时,就会调用该活动,用户可以随时返回到旧的活动。一旦它们在这两个活动之间进行,上面的日志就会生成。我的范围只有30秒,一旦超过30秒,就会调用停止范围。

扩展应用程序的类:

Oncreate:

    beaconManager = BeaconManager.getInstanceForApplication(this);

    //Set the time the app last scanned
    scanningTime = 0;
    backgroundPowerSaver = new BackgroundPowerSaver(this);

    beaconManager.getBeaconParsers().add(new BeaconParser().setBeaconLayout("m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24")); //iBeacon

    Region beaconRegion1 = new Region("Beacon1", Identifier.parse("HidingUUID1"), null, null);
    Region beaconRegion2 = new Region("Beacon2", Identifier.parse("HidingUUID2"), null, null);
    Region beaconRegion3 = new Region("Beacon3", Identifier.parse("HidingUUID3"), null, null);
    Region beaconRegion4 = new Region("Beacon4", Identifier.parse("HidingUUID4"), null, null);
    Region beaconRegion5 = new Region("Beacon5", Identifier.parse("HidingUUID5"), null, null);

    rangingRegion = new Region("RangingRegion", null, null, null);
    regionBootstrap = new RegionBootstrap(this, beaconRegion1);
    regionBootstrap.addRegion(beaconRegion2);
    regionBootstrap.addRegion(beaconRegion3);
    regionBootstrap.addRegion(beaconRegion4);
    regionBootstrap.addRegion(beaconRegion5);

引导通知程序方法:

@Override
public void didEnterRegion(Region region) {
    beaconRegionEvent = true;
    StartRanging();
}

@Override
public void didExitRegion(Region region) {
    beaconRegionEvent = true;
    StartRanging();
}

@Override
public void didDetermineStateForRegion(int i, Region region) {
    if (i == 1) {
        beaconRegionEvent = true;
        StartRanging();
    }
}

开始测距:检查测距是否发生,如果没有,则开始测距。

public boolean StartRanging() {

    long now = System.currentTimeMillis();
    if (now - scanningTime <= Globals.MAX_RANGING_PERIOD * 1000 && scanningTime != 0) {
        Timber.e("Minimum time since previous scan has not passed");
        return false;
    }
    try {
        beaconManager.startRangingBeaconsInRegion(rangingRegion);
        Timber.e("Starting Range");

        //Scanning is about to happen so set the scan time
        scanningTime = System.currentTimeMillis();

    } catch (RemoteException e) {
        Timber.e("Unable to initialize ranging");
        e.printStackTrace();
        return false;
    }

    //Add this range notifier to the beacon manager
    if (beaconManager.getRangingNotifiers().size() < 1) {
        beaconManager.addRangeNotifier(this);
    }

    return true;
}

StopRanging:

public void StopRanging() {
    try {
        //Remove the regions being ranged
        beaconManager.stopRangingBeaconsInRegion(rangingRegion);
    } catch (RemoteException e) {
        e.printStackTrace();
        Timber.e("Cant stop ranging  " + e.toString());
    }
    Timber.d("Stopped Beacon Ranging");
}

区域范围指示灯

@Override
public void didRangeBeaconsInRegion(Collection<Beacon> beacons, Region region) {
    long now = System.currentTimeMillis();
    if (now - scanningTime > Globals.MAX_RANGING_PERIOD * 1000 && scanningTime != 0) {
        StopRanging();
    }

}

扫描太频繁的活动在代码中发生:每秒打开此活动,我们称之为startranging方法。

在onCreate()中调用runnable

Runnable ScanTimer = new Runnable() {
    @Override
    public void run() {
        Timber.d("In Runnable");
        handler.postDelayed(ScanTimer, 1000);

        Timber.d("Checks were good starting ranging");

        App.getInstance().StartRanging();

    }
};