1.重要目錄及檔案

1.manager

frameworks/base/core/java/android/bluetooth/BluetoothHeadsetClient.java

frameworks/base/core/java/android/bluetooth/IBluetoothHeadsetClient.aidl

2.Bluethooth.apk

packages/apps/Bluetooth/src/com/android/bluetooth/hfp //藍芽電話服務(擴音)

packages/apps/Bluetooth/src/com/android/bluetooth/hfpclient //藍芽耳機服務

packages/apps/Bluetooth/res/values/config.xml //藍芽協議配置檔案，想用哪個配置為true即可

packages/apps/Bluetooth/src/com/android/bluetooth/btservice/Config.java //讀取藍芽協議xml配置檔案

packages/apps/Bluetooth/src/com/android/bluetooth/btservice/AdapterService.java //啟動藍芽等服務

3.service

//manager跨程序呼叫HeadsetClientStateMachine服務

packages/apps/Bluetooth/src/com/android/bluetooth/hfpclient/HeadsetClientService.java 

//HeadsetClientStateMachine服務通過jni呼叫C/C++通訊

packages/apps/Bluetooth/src/com/android/bluetooth/hfpclient/HeadsetClientStateMachine.java 

4.hal

external/bluetooth/bluedroid/btif/src/bluetooth.c

struct hw_module_t HAL_MODULE_INFO_SYM = {

  .id = BT_HARDWARE_MODULE_ID,

  .methods = &bt_stack_module_methods

};

5.kernel

kernel/net/rfkill/rfkill.c

module_init(rfkill_xx_init);                                                                        

2.藍芽耳機服務：HeadsetClientService的connect()呼叫流程

<1>frameworks/base/core/java/android/bluetooth/BluetoothHeadsetClient.java

privateIBluetoothHeadsetClientmService;

publicbooleanconnect(BluetoothDevicedevice) {

    return mService.connect(device);

}

<2>packages/apps/Bluetooth/src/com/android/bluetooth/hfpclient/HeadsetClientService.java

import android.bluetooth.IBluetoothHeadsetClient;

import android.bluetooth.BluetoothHeadsetClient;

private static class BluetoothHeadsetClientBinder extendsIBluetoothHeadsetClient.Stub implementsIProfileServiceBinder {

       private HeadsetClientService mService;

 public BluetoothHeadsetClientBinder(HeadsetClientService svc) {

         mService = svc;//HeadsetClientService svc

       }

 private HeadsetClientService getService() {

          return mService;//mService = svc

       }

       @Override

       public boolean connect(BluetoothDevice device) {

         HeadsetClientService service = getService();

         return service.connect(device);//HeadsetClientService service

       }}

public boolean connect(BluetoothDevice device) {

   mStateMachine.sendMessage(HeadsetClientStateMachine.CONNECT, device);//傳送訊息：CONNECT

   return true;

}

<3>packages/apps/Bluetooth/src/com/android/bluetooth/hfpclient/HeadsetClientStateMachine.java

private native booleanconnectNative(byte[] address);

@Override

public synchronized boolean processMessage(Message message){

      switch (message.what){

      case CONNECT:

      if (!connectNative(getByteAddress(device))){

         ...

      }

  }

}

<4>packages/apps/Bluetooth/jni/com_android_bluetooth_hfpclient.cpp

static jbooleanconnectNative(JNIEnv *env, jobject object, jbyteArray address) {

      status =sBluetoothHfpClientInterface->connect((bt_bdaddr_t *)addr)

}

<5>external/bluetooth/bluedroid/btif/src/btif_hf_client.c

static const bthf_client_interface_t bthfClientInterface = {

  sizeof(bthf_client_interface_t),

  .init = init,

.connect =connect,

  ...

}

<5>kernel/net/rfkill/input.c

static struct input_handler rfkill_handler = {

    ...

    .connect =rfkill_connect,

};

private BluetoothHeadsetClient mHfpClient;

BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();

bluetoothAdapter.getProfileProxy(this, mHandsFreeServiceListener, BluetoothProfile.HEADSET_CLIENT);

private BluetoothProfile.ServiceListener mHandsFreeServiceListener = new BluetoothProfile.ServiceListener(){

   @Override

   public void onServiceConnected(int profile, BluetoothProfile proxy) {

   if(profile == BluetoothProfile.HEADSET_CLIENT){

          Log.e(TAG,"HEADSET_CLIENT proxy ========= "+ String.valueOf(proxy));

          mHfpClient = (BluetoothHeadsetClient)proxy;

          List<BluetoothDevice> devices = mHfpClient.getConnectedDevices();

      for(BluetoothDevice device : devices){

               mHfpClient.dial(device_test,"10086");//撥號

           }

        }

     }

  @Override

  public void onServiceDisconnected(int profile){

  if (profile == BluetoothProfile.HEADSET_CLIENT)) {

          mHfpClient = null;

     }

    }

}