ble-test-peripheral-android | A BLE Peripheral Simulator App | iOS library

Two things may be causing this:

• Setting such short scan periods can be problematic unless you are positive that the beacon you are testing with is transmitting at 10Hz or more. This is because 500ms is not much time to detect a packet, and the radio is off for some time when you cycle between scanning on and off. I would make the scan period longer (at least 1100ms) to see if the problem goes away.

• A bug was introduced in library version 2.10 which can cause region exits in the background. I doubt it would solve the problem with such short scan periods. Try targeting library version 2.9, or you can use the instructions to try 2.11-beta1.

Some other tips:

• There is no reason to call bind() when using RegionBootstrap, and it can cause problems with background mode switching if you do. You can put your customized scan period code next to where you set your BeaconParser, and then simply take out the call to updateScanPeriods() as it is only needed if you change scan periods after scanning starts.

• Background scanning periods are not used unless you activate the BackgroundPowerSaver class or programmatically change the background mode of the beaconManager. Unless you do one of these things, foreground scan periods will always be used.