Beacon scanning stops after 10 minutes when app is on foreground and enableForegroundServiceScanning is used.

[elican-doenyas]

Expected behavior

Beacon scanning should continue as usual independent of the time app is used.

Actual behavior

Beacon scanning stops after ~10 minutes while app is on foreground and enableForegroundServiceScanning is called. This is also reproducible in the AltBeaconReference application.

Steps to reproduce this behavior

• Call beaconManager.enableForegroundServiceScanning
• Start ranging beacons with call to beaconManager.startRangingBeacons()
• Open the app and leave it on foreground for 10+ minutes
• Observe that beacon scanning halts after ~10 minutes

Mobile device model and OS version

Samsung S23 - Android 14

Android Beacon Library version

org.altbeacon:android-beacon-library:2.20.5 & org.altbeacon:android-beacon-library:2.20

[elican-doenyas]

@davidgyoung I have pinpointed the reason for this issue, the DEFAULT_SCAN_TIMOUT_MILLIS was reduced from 30 minutes to 10 minutes in the Android OS with the following commit;

https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2237636/1/android/app/src/com/android/bluetooth/btservice/AdapterService.java

So the variable in the CycledLeScanner class to restart scanning and enforce long scans below;

public static final long ANDROID_N_MAX_SCAN_DURATION_MILLIS = 30 * 60 * 1000l; // 30 minutes

should be switched to 10 minutes.

Also, as far as I understand, in order to enforce long scans we need to set the mLongScanForcingEnabled parameter of CycledLeScanner, but I could not find where we can set this as an integrator of the library.