问题描述
是否可以检测并从iOS上的HFP蓝牙设备的接听/结束通话按钮presses回应？有没有人见过这个？我应该在哪里寻找答案？我明白，如果你注册设备制造商（MFI）计划人能拿获得较低水平的蓝牙，但我希望我没有潜水这个深。我也知道，你可以到AVRCP响应命令，但我不想使用此选项。谁能帮助？
Is it possible to detect and respond to the answer/end-call button presses from an HFP Bluetooth device on iOS? Has anyone seen this? Where should I look for answers? I understand one could get access to lower level bluetooth if you register for the device manufacturer (MFI) program but I'm hoping I don't have to dive this deep. I also know that you can respond to AVRCP commands but I am not wanting to use this option. Can anyone help?
推荐答案
UIResponder有一个 -remoteControlReceivedWithEvent：你可以用它来接收来自外部设备的事件，可能包括方法蓝牙耳机。从文档：
UIResponder has a -remoteControlReceivedWithEvent: method that you can use to receive events from external devices, possibly including Bluetooth headsets. From the docs:
远程控制事件起源来自外部配件，包括耳机的命令。应用程序通过控制psented用户音频或视频媒体$ P $响应这些命令。接收响应对象应检查事件的子类型来确定预期的命令 - 例如，播放（UIEventSubtypeRemoteControlPlay） - 然后执行相应的操作。
要允许远程控制事件的传递，必须调用的UIApplication的beginReceivingRemoteControlEvents方法;关闭远程控制的事件，呼吁endReceivingRemoteControlEvents的交付。
To allow delivery of remote-control events, you must call the beginReceivingRemoteControlEvents method of UIApplication; to turn off delivery of remote-control events, call endReceivingRemoteControlEvents.
目前还不清楚在耳机上的接听/结束按钮是否被视为等同于播放/暂停按钮，也就是说，耳塞远程，但是这可能是值得一试。
It’s not clear whether the answer/end button on a headset is considered equivalent to the play/pause button on, say, the earbuds’ remote, but this might be worth a try.
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