EAAccessoryManager是否列出已连接的蓝牙耳机？

Question

根据标题，iOS会调用EAAccessoryManager.connectedAccessories返回连接的蓝牙耳机（包括未为iPhone进行注册的蓝牙耳机吗？不需要连接，但想知道我是否可以使用设备附近的位置来触发事件。

Answer 1

No. It will only return EAAccessory instances representing Made for iPod devices that publish a protocol. From the External Accessory Programming Topics:

Communicating with an external accessory requires you to work closely with the accessory manufacturer to understand the services provided by that accessory. Manufacturers must build explicit support into their accessory hardware for communicating with iOS. As part of this support, an accessory must support at least one command protocol, which is a custom scheme for sending data back and forth between the accessory and an attached application.