Android 9.0 蓝牙通讯录 BluetoothPbapClient

蓝牙通讯录主要包含联系人和通话记录
一、BluetoothPbapClient功能介绍
1、主要实现电话簿下载
2、电话号码簿访问协议（Phonebook Access Profile）
二、BluetoothPbapClient的使用

public void getProfileProxy() {boolean isPbapService = mAdapter.getProfileProxy(mContext, new ProxyServiceListener(), BluetoothProfile.PBAP_CLIENT);Log.i(TAG, "getProfileProxy"+isPbapService);
}
private final class ProxyServiceListener implements BluetoothProfile.ServiceListener{@Overridepublic void onServiceConnected(int profile, BluetoothProfile proxy) {Log.d(TAG,"Bluetooth service connected profile == " + profile);if (profile == BluetoothProfile.PBAP_CLIENT) {mPbapClient = (BluetoothPbapClient) proxy;isPbapProfileReady = true;}}@Overridepublic void onServiceDisconnected(int profile) {Log.d(TAG, "BluetoothPbapClient Profile Proxy Disconnected");if (profile == BluetoothProfile.PBAP_CLIENT) {isPbapProfileReady = false;mPbapClient = null;}}
}

2、BluetoothPbapClient连接

// 连接
public boolean connect(BluetoothDevice device) {if (null != mPbapClient) {return mPbapClient.connect(device);}Log.i(TAG, "mPbapClient == null");return false;
}
//断连
public boolean disconnect(BluetoothDevice device) {if (null != mPbapClient) {return mPbapClient.disconnect(device);}Log.i(TAG, "mPbapClient == null");return false;
}
//判断连接状态
public int getConnectionState() {if (null != mPbapClient) {List<BluetoothDevice> deviceList = mPbapClient.getConnectedDevices();if (deviceList.isEmpty()) {return BluetoothProfile.STATE_DISCONNECTED;} else {return mPbapClient.getConnectionState(deviceList.remove(0));}}return BluetoothProfile.STATE_DISCONNECTED;
}

三、源码分析
代码路径：

android/packages/apps/Bluetooth/src/com/android/bluetooth/pbapclient/PbapClientStateMachine.java
android/packages/apps/Bluetooth/src/com/android/bluetooth/pbapclient/PbapClientConnectionHandler.java
android/packages/apps/Bluetooth/src/com/android/bluetooth/pbapclient/PbapClientService.java

1、在PbapClientStateMachine.java文件中内部类Connecting类中，当我们连接蓝牙后就会执行Connecting类中enter()方法，并且也会注册该广播android.bluetooth.device.action.SDP_RECORD

class Connecting extends State {private SDPBroadcastReceiver mSdpReceiver;@Overridepublic void enter() {if (DBG) {Log.d(TAG, "Enter Connecting: " + getCurrentMessage().what);}onConnectionStateChanged(mCurrentDevice, mMostRecentState,BluetoothProfile.STATE_CONNECTING);mSdpReceiver = new SDPBroadcastReceiver();mSdpReceiver.register();mCurrentDevice.sdpSearch(BluetoothUuid.PBAP_PSE);mMostRecentState = BluetoothProfile.STATE_CONNECTING;// Create a separate handler instance and thread for performing// connect/download/disconnect operations as they may be time consuming and error prone.mHandlerThread =new HandlerThread("PBAP PCE handler", Process.THREAD_PRIORITY_BACKGROUND);mHandlerThread.start();mConnectionHandler =new PbapClientConnectionHandler.Builder().setLooper(mHandlerThread.getLooper()).setContext(mService).setClientSM(PbapClientStateMachine.this).setRemoteDevice(mCurrentDevice).build();sendMessageDelayed(MSG_CONNECT_TIMEOUT, CONNECT_TIMEOUT);}@Overridepublic boolean processMessage(Message message) {if (DBG) {Log.d(TAG, "Processing MSG " + message.what + " from " + this.getName());}switch (message.what) {case MSG_DISCONNECT:if (message.obj instanceof BluetoothDevice && message.obj.equals(mCurrentDevice)) {removeMessages(MSG_CONNECT_TIMEOUT);transitionTo(mDisconnecting);}break;case MSG_CONNECTION_COMPLETE:removeMessages(MSG_CONNECT_TIMEOUT);transitionTo(mConnected);break;case MSG_CONNECTION_FAILED:case MSG_CONNECT_TIMEOUT:removeMessages(MSG_CONNECT_TIMEOUT);transitionTo(mDisconnecting);break;case MSG_SDP_COMPLETE:mConnectionHandler.obtainMessage(PbapClientConnectionHandler.MSG_CONNECT,message.obj).sendToTarget();break;default:Log.w(TAG, "Received unexpected message while Connecting");return NOT_HANDLED;}return HANDLED;}@Overridepublic void exit() {mSdpReceiver.unregister();mSdpReceiver = null;}private class SDPBroadcastReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {String action = intent.getAction();if (DBG) {Log.v(TAG, "onReceive" + action);}if (action.equals(BluetoothDevice.ACTION_SDP_RECORD)) {BluetoothDevice device =intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);if (!device.equals(getDevice())) {Log.w(TAG, "SDP Record fetched for different device - Ignore");return;}ParcelUuid uuid = intent.getParcelableExtra(BluetoothDevice.EXTRA_UUID);if (DBG) {Log.v(TAG, "Received UUID: " + uuid.toString());}if (DBG) {Log.v(TAG, "expected UUID: " + BluetoothUuid.PBAP_PSE.toString());}if (uuid.equals(BluetoothUuid.PBAP_PSE)) {sendMessage(MSG_SDP_COMPLETE,intent.getParcelableExtra(BluetoothDevice.EXTRA_SDP_RECORD));}}}public void register() {IntentFilter filter = new IntentFilter();filter.addAction(BluetoothDevice.ACTION_SDP_RECORD);mService.registerReceiver(this, filter);}public void unregister() {mService.unregisterReceiver(this);}}
}

2、蓝牙连接后会先通过socket去连接UUID

private boolean connectSocket() {try {/* Use BluetoothSocket to connect */if (mPseRec == null) {// BackWardCompatability: Fall back to create RFCOMM through UUID.Log.v(TAG, "connectSocket: UUID: " + BluetoothUuid.PBAP_PSE.getUuid());mSocket =mDevice.createRfcommSocketToServiceRecord(BluetoothUuid.PBAP_PSE.getUuid());} else if (mPseRec.getL2capPsm() != L2CAP_INVALID_PSM) {Log.v(TAG, "connectSocket: PSM: " + mPseRec.getL2capPsm());mSocket = mDevice.createL2capSocket(mPseRec.getL2capPsm());} else {Log.v(TAG, "connectSocket: channel: " + mPseRec.getRfcommChannelNumber());mSocket = mDevice.createRfcommSocket(mPseRec.getRfcommChannelNumber());}if (mSocket != null) {mSocket.connect();return true;} else {Log.w(TAG, "Could not create socket");}} catch (IOException e) {Log.e(TAG, "Error while connecting socket", e);}return false;
}
3、蓝牙socket连接成功后就会去Obex Client Session
case MSG_CONNECT:mPseRec = (SdpPseRecord) msg.obj;/* To establish a connection, first open a socket and then create an OBEX session */if (connectSocket()) {if (DBG) {Log.d(TAG, "Socket connected");}} else {Log.w(TAG, "Socket CONNECT Failure ");mPbapClientStateMachine.obtainMessage(PbapClientStateMachine.MSG_CONNECTION_FAILED).sendToTarget();return;}if (connectObexSession()) {mPbapClientStateMachine.obtainMessage(PbapClientStateMachine.MSG_CONNECTION_COMPLETE).sendToTarget();} else {mPbapClientStateMachine.obtainMessage(PbapClientStateMachine.MSG_CONNECTION_FAILED).sendToTarget();}break;

4、Obex Client Session连接

private boolean connectObexSession() {boolean connectionSuccessful = false;try {if (DBG) {Log.v(TAG, "Start Obex Client Session");}BluetoothObexTransport transport = new BluetoothObexTransport(mSocket);mObexSession = new ClientSession(transport);mObexSession.setAuthenticator(mAuth);HeaderSet connectionRequest = new HeaderSet();connectionRequest.setHeader(HeaderSet.TARGET, PBAP_TARGET);if (mPseRec != null) {if (DBG) {Log.d(TAG, "Remote PbapSupportedFeatures " + mPseRec.getSupportedFeatures());}ObexAppParameters oap = new ObexAppParameters();if (mPseRec.getProfileVersion() >= PBAP_V1_2) {oap.add(BluetoothPbapRequest.OAP_TAGID_PBAP_SUPPORTED_FEATURES,PBAP_SUPPORTED_FEATURE);}oap.addToHeaderSet(connectionRequest);}HeaderSet connectionResponse = mObexSession.connect(connectionRequest);connectionSuccessful =(connectionResponse.getResponseCode() == ResponseCodes.OBEX_HTTP_OK);if (DBG) {Log.d(TAG, "Success = " + Boolean.toString(connectionSuccessful));}} catch (IOException e) {Log.w(TAG, "CONNECT Failure " + e.toString());closeSocket();}return connectionSuccessful;
}

5、Obex Client Session连接成功后，就可以去下载手机端的联系人和通话记录

case MSG_DOWNLOAD:try {mAccountCreated = addAccount(mAccount);if (!mAccountCreated) {Log.e(TAG, "Account creation failed.");return;}// Start at contact 1 to exclued Owner Card PBAP 1.1 sec 3.1.5.2BluetoothPbapRequestPullPhoneBook request =new BluetoothPbapRequestPullPhoneBook(PB_PATH, mAccount,PBAP_REQUESTED_FIELDS, VCARD_TYPE_30, 0, 1);request.execute(mObexSession);PhonebookPullRequest processor =new PhonebookPullRequest(mPbapClientStateMachine.getContext(),mAccount);processor.setResults(request.getList());processor.onPullComplete();HashMap<String, Integer> callCounter = new HashMap<>();downloadCallLog(MCH_PATH, callCounter);downloadCallLog(ICH_PATH, callCounter);downloadCallLog(OCH_PATH, callCounter);} catch (IOException e) {Log.w(TAG, "DOWNLOAD_CONTACTS Failure" + e.toString());}break;

总结：
1、蓝牙连接后会先通过socket去连接UUID
2、socket连接上后会连接OBEX协议
3、OBEX协议连接上之后就可以去下载联系人和通话记录
连接上蓝牙后下载通讯录的日志

08-10 22:00:57.986  2629  4617 D PbapClientStateMachine: Enter Connecting: -2
08-10 22:00:57.987  2629  4617 D PbapClientStateMachine: Connection state 54:92:09:12:BF:E9: 0->1
08-10 22:01:00.372  2629  2629 V PbapClientStateMachine: onReceiveandroid.bluetooth.device.action.SDP_RECORD
08-10 22:01:00.372  2629  2629 V PbapClientStateMachine: Received UUID: 0000112f-0000-1000-8000-00805f9b34fb
08-10 22:01:00.373  2629  2629 V PbapClientStateMachine: expected UUID: 0000112f-0000-1000-8000-00805f9b34fb
08-10 22:01:00.373  2629  4617 D PbapClientStateMachine: Processing MSG 9 from Connecting
08-10 22:01:00.373  2629  4618 D PbapClientConnectionHandler: Handling Message = 1
08-10 22:01:00.374  2629  4618 V PbapClientConnectionHandler: connectSocket: channel: 19
08-10 22:01:00.674  2629  4618 D PbapClientConnectionHandler: Socket connected
08-10 22:01:00.674  2629  4618 V PbapClientConnectionHandler: Start Obex Client Session
08-10 22:01:00.677  2629  4618 D PbapClientConnectionHandler: Remote PbapSupportedFeatures 3
08-10 22:01:00.742  2629  4618 D PbapClientConnectionHandler: Success = true
08-10 22:01:00.742  2629  4617 D PbapClientStateMachine: Processing MSG 5 from Connecting
08-10 22:01:00.744  2629  4617 D PbapClientStateMachine: Enter Connected: 5
08-10 22:01:00.745  2629  4617 D PbapClientStateMachine: Connection state 54:92:09:12:BF:E9: 1->2
08-10 22:01:00.751  2629  4618 D PbapClientConnectionHandler: Handling Message = 3
08-10 22:01:00.798  2629  4618 D PbapClientConnectionHandler: Added account Account {name=54:92:09:12:BF:E9, type=com.android.bluetooth.pbapsink}

断开蓝牙后日志

08-10 22:42:09.088  2629  3393 D PbapClientStateMachine: Disconnect Request 54:92:09:12:BF:E9
08-10 22:42:09.088  2629  4617 D PbapClientStateMachine: Processing MSG 2 from Connected
08-10 22:42:09.088  2629  4617 D PbapClientStateMachine: Enter Disconnecting: 2
08-10 22:42:09.088  2629  4617 D PbapClientStateMachine: Connection state 54:92:09:12:BF:E9: 2->3
08-10 22:42:09.104  2629  4618 D PbapClientConnectionHandler: Handling Message = 2
08-10 22:42:09.104  2629  4618 D PbapClientConnectionHandler: Starting Disconnect
08-10 22:42:09.104  2629  4618 D PbapClientConnectionHandler: obexSessionDisconnectjavax.obex.ClientSession@c0dce50
08-10 22:42:09.679  2629  4618 D PbapClientConnectionHandler: Closing Socket
08-10 22:42:09.679  2629  4618 D PbapClientConnectionHandler: Closing socketandroid.bluetooth.BluetoothSocket@89d6849
08-10 22:42:09.680  2629  4618 D PbapClientConnectionHandler: Completing Disconnect
08-10 22:42:09.768  2629  4618 D PbapClientConnectionHandler: Removed account Account {name=54:92:09:12:BF:E9, type=com.android.bluetooth.pbapsink}
08-10 22:42:10.096  2629  4617 D PbapClientStateMachine: Processing MSG 7 from Disconnecting
08-10 22:42:10.097  2629  4617 D PbapClientStateMachine: Enter Disconnected: 7
08-10 22:42:10.097  2629  4617 D PbapClientStateMachine: Connection state 54:92:09:12:BF:E9: 3->0

遇到问题点：
1、当我们使用BluetoothPbapClient来访问连接状态时候，mPbapClient.connect一直返回是false，返回false的原因是因为：getPriority(device) <= BluetoothProfile.PRIORITY_OFF，该行代码返回false，返回false就导致不能同步手机端的联系人数据。
数据存放的路径：/data/user/0/com.android.providers.contacts/databases

//客户端
public boolean connect(BluetoothDevice device) {if (null != mPbapClient) {return mPbapClient.connect(device);}Log.i(TAG, "mPbapClient == null");return false;
}
//服务端
public boolean connect(BluetoothDevice device) {if (device == null) {throw new IllegalArgumentException("Null device");}enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH ADMIN permission");Log.d(TAG, "Received request to ConnectPBAPPhonebook " + device.getAddress());Log.d(TAG, "Received request to ConnectPBAPPhonebook   getPriority(device) " + getPriority(device));Log.d(TAG, "Received request to ConnectPBAPPhonebook  BluetoothProfile.PRIORITY_OFF  " + BluetoothProfile.PRIORITY_OFF);if (getPriority(device) <= BluetoothProfile.PRIORITY_OFF) {// return false;}synchronized (mPbapClientStateMachineMap) {PbapClientStateMachine pbapClientStateMachine = mPbapClientStateMachineMap.get(device);if (pbapClientStateMachine == null&& mPbapClientStateMachineMap.size() < MAXIMUM_DEVICES) {pbapClientStateMachine = new PbapClientStateMachine(this, device);pbapClientStateMachine.start();mPbapClientStateMachineMap.put(device, pbapClientStateMachine);return true;} else {Log.w(TAG, "Received connect request while already connecting/connected.");return false;}}
}
//把该行代码注释掉就可以解决connect返回false的问题，这样就可以正常同步手机端的联系人if (getPriority(device) <= BluetoothProfile.PRIORITY_OFF) {// return false;}

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