android 蓝牙hfp client实现简介

首先确认配置文件是否开启hfp profile功能。根据设备的角色（hfp client / hfp server）来配置hfp profile.
profile 配置文件路径：
       alps/packages/apps/Bluetooth/res/values/config.xml
       alps/device/${customer}/${ProjectName}/overlay/packages/apps/Bluetooth/res/values/config.xml 


e.g.  设备的角色定义为hfp client,需做如下配置：
    <bool name="profile_supported_hs_hfp">false</bool>
    <bool name="profile_supported_hfpclient">true</bool>

接下来看一下hfp client的实现，以accept call为例
//3步获取hfp client service
1)BluetoothAdapter mAdapter = BluetoothAdapter.getDefaultAdapter();


2)mAdapter.getProfileProxy(getApplicationContext(),new MServerListener(), BluetoothProfile.HEADSET_CLIENT);


3)public class MServerListener implements ServiceListener {
@Override
public void onServiceConnected(int profile, BluetoothProfile proxy) { <