bluetooth - Xamarin iOS External Accessory: check whether hands free device (car) is available -


i want app detect hands-free built in car. don't need communicate device, need check if available.

ex: want send notification when hands-free available on vehicle.

i got working corebluetooth works bt4/ble. need use eaaccessorymanager old bluetooth devices (version 2.0)? how can implement this? did try code below not work:

var _accessorylist = eaaccessorymanager.sharedaccessorymanager.connectedaccessories;  foreach (eaaccessory acc in _accessorylist) {     // devices }

the list _accessorylist empty.

the info.plist contains background mode external accessory communication , key uisupportedexternalaccessoryprotocols not sure should value put in.

any help? missing? thanks


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