Users appreciate the convenience of wireless headsets, such as Bluetooth A2DP devices.
用户很喜欢无线耳机的便捷，比如蓝牙A2DP系列。
If you have a bluetooth connection in your car that doesn't support A2DP, you'll only hear phone calls.
如果您有蓝牙连接你的车中不支持的A2DP，您只能听到电话。
API support for Bluetooth A2DP and HSP profiles lets applications query Bluetooth profiles for connected devices, audio state, and more, then notify the user.
API对蓝牙A2DP和HSP配置的支持使得应用可以查询连接的蓝牙设备所提供的蓝牙协定、音频栈等，并通知用户。
Note that when the currently active audio output device does not support volume control (such as an A2DP device), the volume slider is replaced by the appropriate device name.
注意如果当前的声音输出设备不支持音量控制(就像设备A2DP)，音量滑块就不会显示，取而代之的是设备名称。
Note that when the currently active audio output device does not support volume control (such as an A2DP device), the volume slider is replaced by the appropriate device name.
注意如果当前的声音输出设备不支持音量控制(就像设备A2DP)，音量滑块就不会显示，取而代之的是设备名称。
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