Android USB OOB feature available?

RE: Android USB OOB feature available?

Aleksander Nowakowski — Fri, 09 Sep 2022 07:48:17 GMT

Hi,

Some hidden methods are added to a greylist, which just prints a warning, but should work. For example, we're clearing the GATT cache or removing bond information this way, and it works.

We don't have any workaround for that. Also, I can't guarantee that the methods, even if reflections would work, will work.

RE: Android USB OOB feature available?

Matthew K — Mon, 05 Sep 2022 12:36:07 GMT

Thanks Aleksander. I searched in Stack Overflow that this "reflection" solution is blocked starting from Android 9 & above.
I tested with old Android and new devices and this was true.

Was Nordic able to find other workarounds with newer Android 9 & above devices for doing what I want to do?

RE: Android USB OOB feature available?

Aleksander Nowakowski — Mon, 05 Sep 2022 12:26:57 GMT

You may try using this method: https://cs.android.com/android/platform/superproject/+/master:packages/modules/Bluetooth/framework/java/android/bluetooth/BluetoothDevice.java;l=1761;bpv=0;bpt=1

It requires reflection, but should be accessible.

RE: Android USB OOB feature available?

Aleksander Nowakowski — Mon, 05 Sep 2022 12:05:29 GMT

Hello,

Bonding is handled by Android OS. As far as I know only NFC OOB data are supported. To my best knowledge, it is not possible to pass any OOB data from an app to the OS to perform bonding.