AltBeacon shows previous beacon that is disconnected last time !! similar get Cached

[NimaaZx]

Expected behavior

iBeacon should not be detected when I disconnected .

Actual behavior

Altbeacon show iBeacon after I disconnected.

Steps to reproduce this behavior

Mobile device model and OS version

Android 9.0 Custom rom / Redmi note 3 pro

Android Beacon Library version

'org.altbeacon:android-beacon-library:2.17.1' Kotlin

Hey guys. I use altbeacon library for getting Ibeacon UUID. I use "beaconManager!!.addRangeNotifier " in onBeaconServiceConnect function. At first I launch my app and it can scan ibeacon correclty. for example 1 beacon is found. then after One time scan it is stopped. then I disconnect my Ibeacon power. it should not be found. but when I click on my Scan button, it still shows previous beacon. I must scan again and finally it is gone. It is something like get cached. I wanted and did it in fragment, it behaves similar. I write it in Activity again. nothing changed. I upload my code for you.

class RangingActivity : Activity(), BeaconConsumer {
    private var beaconManager: BeaconManager? = null
    val region = Region("myBeaons", null, null, null)
    var isScanFirstTime=true

    lateinit var imgScan: ImageView
    lateinit var progress: ProgressBar
    lateinit var homeRelative2: RelativeLayout

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_ranging)

        imgScan=findViewById(R.id.ImgScan)
        progress=findViewById(R.id.progressbarInsideHomeFragment)
        homeRelative2=findViewById(R.id.HomeRelativeLayout2)

        beaconManager = BeaconManager.getInstanceForApplication(this)

        beaconManager = BeaconManager.getInstanceForApplication(applicationContext)
        beaconManager!!.beaconParsers.add(BeaconParser().setBeaconLayout("m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24"))
        beaconManager!!.foregroundScanPeriod = 10000L
        beaconManager!!.foregroundBetweenScanPeriod=2000

        beaconManager!!.bind(this)

        imgScan.setOnClickListener {
            beaconManager!!.startRangingBeaconsInRegion(region)
            progress.visibility=View.VISIBLE
            homeRelative2.visibility=View.GONE
        }

        startScan()

    }

    override fun onDestroy() {
        super.onDestroy()
        beaconManager!!.unbind(this)
    }

    override fun onBeaconServiceConnect() {
        beaconManager!!.removeAllRangeNotifiers()
        beaconManager!!.addRangeNotifier { beacons, region ->
            stopScan()
            if (beacons.size > 0) {
                Log.d("BeaconList", "didRangeBeaconsInRegion called with beacon count:  " + beacons.size)
                for (beacon in beacons) {
                    Log.d("BeaconList", "uuid:  " + beacon.id1)

                }
                progress.visibility = View.GONE
                homeRelative2.visibility = View.VISIBLE
            }

            else if(beacons.size==0) {
                progress.visibility = View.GONE
                homeRelative2.visibility = View.VISIBLE
            }

        }

    companion object {
        protected const val TAG = "RangingActivity"
    }

    fun startScan() {
        try {
            if (isScanFirstTime and beaconManager!!.isBound(this)) {
                beaconManager!!.startRangingBeaconsInRegion(region)
                isScanFirstTime = false
            }

        } catch (e: RemoteException) {
            Log.d("startScanFunction", "Start scan beacon problem", e)
        }
    }

    fun stopScan() {
        try {
            if (beaconManager!!.isBound(this)) {
                beaconManager!!.stopRangingBeaconsInRegion(region)
            }

        } catch (e: RemoteException) {
            Log.d("startScanFunction", "Stop scan beacon problem", e)
        }
    }
}

[NimaaZx]

Hey and thanks to developers . is nobody know what the problem is? Any suggrstion?

[davidgyoung]

Sorry, this question is not appropriate for this forum. For help debugging your program you might try stackoverfow.com