android-beacon-library: java.lang.IllegalStateException in android.bluetooth.le.BluetoothLeUtils.checkAdapterStateOn

Expected behavior

Exception to be caught by library, in event of unusual IllegalStateException

Actual behavior

Exception not caught and causes app crash.

java.lang.IllegalStateException: BT Adapter is not turned ON
at android.bluetooth.le.BluetoothLeUtils.checkAdapterStateOn(BluetoothLeUtils.java:136)
at android.bluetooth.le.BluetoothLeScanner$1.handleMessage(BluetoothLeScanner.java:85)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:168)
at android.app.ActivityThread.main(ActivityThread.java:5885)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:797)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:687)

Steps to reproduce this behavior

Exact sequence not found but appears to be happening predominantly on HTC devices on app start. This has been reported from two apps we are involved with. Additionally, found the same issue reported on http://stackoverflow.com/q/37965687/5580666

Mobile device model and OS version

Description from one of the app teams:

"It seems that there is some problem with some new HTC phones (like htc one_e8 dual sim) that are running latest Android 6.0. Possibly this is bug in their firmware. This bug is on the 6th place with total crashes of 147.

It probably causes app to crash on start, so It’s not possible for users to use the app when bluetooth is turned on. It’s reported even in Google Play."

Android Beacon Library version

Seen in version 2.6.1 in the two apps we are involved with and also reported in version 2.7 on http://stackoverflow.com/q/37965687/5580666

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