[转载]BluetoothHeadsetClient

最新推荐文章于 2024-05-10 20:10:19 发布

zhangqqs

最新推荐文章于 2024-05-10 20:10:19 发布

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分类专栏： Android 文章标签： android 蓝牙

本文链接：https://blog.youkuaiyun.com/zhangqqs/article/details/114286384

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本文详细介绍了HFP协议在蓝牙通信中的应用，特别是针对车载蓝牙场景。文中提供了如何使用BluetoothHeadsetClient进行设备连接、通话控制及音频通道切换等操作的具体方法。

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原文地址：https://blog.youkuaiyun.com/geniushorse/article/details/108604964?utm_medium=distribute.pc_relevant.none-task-blog-baidujs_title-10&spm=1001.2101.3001.4242
主要实现HFP协议，主要实现拨打、接听、挂断电话（AG侧、HF侧）、切换声道功能。

AG（Audio Gate）音频网关—音频设备输入输出网关。
HF（Hands Free）免提—该设备作为音频网关的远程音频输入/输出机制，并可提供若干遥控功能。
在车载蓝牙中，手机侧是AG，车载蓝牙侧是HF，在android源代码中，将AG侧称为HFP/AG，将HF侧称为HFPClient/HF。

BluetoothHeadsetClient初始化
// A code block
bluetoothAdapter.getProfileProxy(context, serviceListener, BluetoothProfile.HEADSET_CLIENT);
//还要实现BluetoothProfile.ServiceListener接口，在onServiceConnected中获取BluetoothHeadsetClient对象
private ServiceListener serviceListener = new ServiceListener()
{

    @Override
    public void onServiceConnected(int arg0, BluetoothProfile arg1)
    {
  
        log.i("onServiceConnected", "arg0=" + arg0);
        bluetoothHeadsetClient = (BluetoothHeadsetClient) arg1;
    }

    @Override
    public void onServiceDisconnected(int arg0)
    {
  
        log.i("onServiceDisconnected", "arg0=" + arg0);
    }
};

//销毁
bluetoothAdapter.closeProfileProxy(BluetoothProfile.HEADSET_CLIENT, bluetoothHeadsetClient);
BluetoothHeadsetClient连接设备
//获取连接状态
bluetoothHeadsetClient.getConnectionState(BluetoothDevice);
//连接
bluetoothHeadsetClient.connect(BluetoothDevice);
//断连
bluetoothHeadsetClient.disconnect(BluetoothDevice);
BluetoothHeadsetClient控制声音通道
// Initiates a connection of audio channel.
bluetoothHeadsetClient.connectAudio(BluetoothDevice);
// Disconnects audio channel.
bluetoothHeadsetClient.disconnectAudio(BluetoothDevice);
BluetoothHeadsetClient电话
// 拨号
bluetoothHeadsetClient.dial(BluetoothDevice, callNumber);
// 挂断所有电话
bluetoothHeadsetClient.terminateCall(BluetoothDevice, null);
//接听来电
bluetoothHeadsetClient.acceptCall(BluetoothDevice, BluetoothHeadsetClient.CALL_ACCEPT_NONE);
//挂断来电
bluetoothHeadsetClient.rejectCall(BluetoothDevice);
//发送DTMF
bluetoothHeadsetClient.sendDTMF(BluetoothDevice, (byte) dtmf);
//三方ANSWER_AND_HOLD
bluetoothHeadsetClient.acceptCall(BluetoothDevice,BluetoothHeadsetClient.CALL_ACCEPT_HOLD);
//三方ANSWER_AND_TERMINATE
bluetoothHeadsetClient.acceptCall(BluetoothDevice,BluetoothHeadsetClient.CALL_ACCEPT_TERMINATE);
//获取信号强度
Bundle bundle = bluetoothHeadsetClient.getCurrentAgEvents(BluetoothDevice);
if (bundle != null && bundle.containsKey(BluetoothHeadsetClient.EXTRA_NETWORK_SIGNAL_STRENGTH))
{

return bundle.getInt(BluetoothHeadsetClient.EXTRA_NETWORK_SIGNAL_STRENGTH);

}