how to find Bluetooth audio devices in iOS
问题 Okay, I\'m working on a fun project that has a hurdle where I need to enable Bluetooth audio support for my iOS app. The hurdle I\'m at is that I simply can\'t even begin to get a list of connected Bluetooth audio devices. Even though my iPhone 5S recognizes my earpiece (a ~3 - 4 year old LG HBM-230, to be precise) and plays audio through it for phone calls, BOTH External Accessory and CoreBluetooth are giving me nothing useful when I query both. I\'m basing my own code off questions &