connectedAccessories returns empty array but the bluetooth device is connected

Question

I'm trying to get the connected printer (Zebra QLn220, QLn320) through Bluetooth with the next snippet of code:

EAAccessoryManager *sam = [EAAccessoryManager sharedAccessoryManager];
NSArray * connectedAccessories = [sam connectedAccessories];

This works the 99% of times but after a lot of work printing through the method [ZebraPrinterConnection write:data error:error], the connectedAccessories starts failing and returns an empty array. This can't be solved even stopping the app and starting again. But if I turn off the printer and turn on it again, this code works again.

What can I do?

Answer 1

Updated the SDK and the problem was solved